From 5ae8d7b03cb42c4095fb88a3489e2d862ad40198 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?xavier=20dupr=C3=A9?= <xavier.dupre@gmail.com>
Date: Mon, 14 Mar 2022 22:56:15 +0100
Subject: [PATCH 1/7] Simplifications

---
 .../sphinxext/sphinximages/sphinxtrib/images.py             | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/src/pyquickhelper/sphinxext/sphinximages/sphinxtrib/images.py b/src/pyquickhelper/sphinxext/sphinximages/sphinxtrib/images.py
index 3280bfb7..857fac07 100644
--- a/src/pyquickhelper/sphinxext/sphinximages/sphinxtrib/images.py
+++ b/src/pyquickhelper/sphinxext/sphinximages/sphinxtrib/images.py
@@ -323,12 +323,6 @@ def configure_backend(app):
     # because sphinx try to make a pickle from it.
     app.sphinxtrib_images_backend = backend
 
-    logger = logging.getLogger("image")
-    logger.info(
-        'Initiated images backend: %s:%s',
-        backend.__class__.__module__,
-        backend.__class__.__name__)
-
     def backend_methods(node, output_type):
         "local function"
         def backend_method(f):

From 541ed9d86aca1cf3fbbe05ae421fd94f0577a08e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?xavier=20dupr=C3=A9?= <xavier.dupre@gmail.com>
Date: Mon, 14 Mar 2022 23:52:15 +0100
Subject: [PATCH 2/7] better cleaning of notebooks

---
 .../having_a_form_in_a_notebook.ipynb         | 26 ---------------
 .../notebooks/td2a_cenonce_session_3A.ipynb   | 12 -------
 _unittests/ut_helpgen/test_notebooks_bug.py   | 32 +------------------
 .../ipythonhelper/notebook_helper.py          | 14 ++++++--
 4 files changed, 13 insertions(+), 71 deletions(-)

diff --git a/_doc/notebooks/having_a_form_in_a_notebook.ipynb b/_doc/notebooks/having_a_form_in_a_notebook.ipynb
index 9e7e6158..2eb4c9af 100644
--- a/_doc/notebooks/having_a_form_in_a_notebook.ipynb
+++ b/_doc/notebooks/having_a_form_in_a_notebook.ipynb
@@ -1116,32 +1116,6 @@
       "nbconvert_exporter": "python",
       "pygments_lexer": "ipython3",
       "version": "3.7.2"
-    },
-    "widgets": {
-      "state": {
-        "6f6cf4a1f7df4a99ba95db615ec86dff": {
-          "views": [
-            {
-              "cell_index": 20
-            }
-          ]
-        },
-        "c67410ee5aa443b9a6cb53d4f46becec": {
-          "views": [
-            {
-              "cell_index": 20
-            }
-          ]
-        },
-        "dd3c00717e9d48b99bb5e34462b15fa0": {
-          "views": [
-            {
-              "cell_index": 20
-            }
-          ]
-        }
-      },
-      "version": "1.2.0"
     }
   },
   "nbformat": 4,
diff --git a/_unittests/ut_helpgen/notebooks/td2a_cenonce_session_3A.ipynb b/_unittests/ut_helpgen/notebooks/td2a_cenonce_session_3A.ipynb
index b24fed5a..95d872cf 100644
--- a/_unittests/ut_helpgen/notebooks/td2a_cenonce_session_3A.ipynb
+++ b/_unittests/ut_helpgen/notebooks/td2a_cenonce_session_3A.ipynb
@@ -1636,18 +1636,6 @@
       "nbconvert_exporter": "python",
       "pygments_lexer": "ipython3",
       "version": "3.9.5"
-    },
-    "widgets": {
-      "state": {
-        "37694361e5da4eb38daa525f8bb2117c": {
-          "views": [
-            {
-              "cell_index": 9
-            }
-          ]
-        }
-      },
-      "version": "1.2.0"
     }
   },
   "nbformat": 4,
diff --git a/_unittests/ut_helpgen/test_notebooks_bug.py b/_unittests/ut_helpgen/test_notebooks_bug.py
index cdf60c2d..dd4d4629 100644
--- a/_unittests/ut_helpgen/test_notebooks_bug.py
+++ b/_unittests/ut_helpgen/test_notebooks_bug.py
@@ -5,7 +5,6 @@
 import os
 import unittest
 import re
-from pyquickhelper.loghelper import fLOG
 from pyquickhelper.helpgen.sphinx_main import process_notebooks
 from pyquickhelper.pycode import is_travis_or_appveyor, get_temp_folder, ExtTestCase
 
@@ -13,36 +12,24 @@
 class TestNoteBooksBug(ExtTestCase):
 
     def test_regex(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
         exp = re.compile(r"(.{3}[\\]\$)")
         s = ": [ ['$',"
-        fLOG(s)
         r = exp.finditer(s)
         nb = 0
         for _ in r:
-            fLOG("1", _.groups())
             nb += 1
         nb1 = nb
 
         s = r"\def\PYZdl{\char`\$}"
-        fLOG(s)
         r = exp.finditer(s)
         nb = 0
         for _ in r:
-            fLOG("2", _.groups())
             nb += 1
 
         self.assertEqual(nb1, 0)
         self.assertTrue(nb > 0)
 
     def test_notebook(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
         path = os.path.abspath(os.path.split(__file__)[0])
         fold = os.path.normpath(os.path.join(path, "notebooks"))
         nbs = [os.path.join(fold, _)
@@ -55,7 +42,6 @@ def test_notebook(self):
             return
 
         res = process_notebooks(nbs, temp, temp, formats=formats)
-        fLOG("*****", len(res))
         for _ in res:
             if not os.path.exists(_[0]):
                 raise Exception(_[0])
@@ -67,10 +53,6 @@ def test_notebook(self):
             raise Exception(content)
 
     def test_notebook_html(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
         path = os.path.abspath(os.path.split(__file__)[0])
         fold = os.path.normpath(os.path.join(path, "notebooks"))
         nbs = [os.path.join(fold, _)
@@ -83,16 +65,11 @@ def test_notebook_html(self):
             return
 
         res = process_notebooks(nbs, temp, temp, formats=formats)
-        fLOG("*****", len(res))
         for _ in res:
             if not os.path.exists(_[0]):
                 raise Exception(_[0])
 
     def test_notebook_slides(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
         path = os.path.abspath(os.path.split(__file__)[0])
         fold = os.path.normpath(os.path.join(path, "notebooks"))
         nbs = [os.path.join(fold, _)
@@ -105,7 +82,6 @@ def test_notebook_slides(self):
             return
 
         res = process_notebooks(nbs, temp, temp, formats=formats)
-        fLOG("*****", len(res))
         for _ in res:
             if not os.path.exists(_[0]):
                 raise Exception(_[0])
@@ -117,10 +93,6 @@ def test_notebook_slides(self):
                 raise Exception(check)
 
     def test_notebook_pdf(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
         path = os.path.abspath(os.path.split(__file__)[0])
         fold = os.path.normpath(os.path.join(path, "notebooks"))
         nbs = [os.path.join(fold, _)
@@ -137,9 +109,7 @@ def test_notebook_pdf(self):
             return
 
         res = process_notebooks(nbs, temp, temp, formats=formats)
-        fLOG("*****", len(res))
         for _ in res:
-            fLOG(_)
             self.assertExists(_[0])
 
         check = os.path.join(temp, "td1a_correction_session4.tex")
@@ -150,4 +120,4 @@ def test_notebook_pdf(self):
 
 
 if __name__ == "__main__":
-    unittest.main()
+    unittest.main(verbosity=2)
diff --git a/src/pyquickhelper/ipythonhelper/notebook_helper.py b/src/pyquickhelper/ipythonhelper/notebook_helper.py
index 94ffe69f..cd960822 100644
--- a/src/pyquickhelper/ipythonhelper/notebook_helper.py
+++ b/src/pyquickhelper/ipythonhelper/notebook_helper.py
@@ -451,7 +451,8 @@ def remove_execution_number(infile, outfile=None, encoding="utf-8", indent=2, ru
     @param      indent      indentation
     @param      rule        determines the rule which specifies execution numbers,
                             'None' for None, 'int' for consectuive integers numbers.
-    @return                 modified string or None if outfile is not None and the file was not modified
+    @return                 modified string or None if outfile is not None
+                            and the file was not modified
 
     .. todoext::
         :title: remove execution number from notebook facilitate git versionning
@@ -465,7 +466,8 @@ def remove_execution_number(infile, outfile=None, encoding="utf-8", indent=2, ru
         Remove execution number from the notebook
         to avoid commiting changes only about those numbers
 
-    `notebook 5.1.0 <https://jupyter-notebook.readthedocs.io/en/stable/changelog.html>`_
+    `notebook 5.1.0
+    <https://jupyter-notebook.readthedocs.io/en/stable/changelog.html>`_
     introduced changes which are incompatible with
     leaving the cell executing number empty.
     """
@@ -497,9 +499,17 @@ def fixup(adict, k, v, cellno=0, outputs="outputs"):
                                        outputs=outputs)
         return cellno
 
+    def widget(adict):
+        metadata = adict.get('metadata', None)
+        if metadata is None:
+            return
+        if 'widgets' in metadata:
+            del metadata['widgets']
+
     content = read_content_ufs(infile)
     js = json.loads(content)
     fixup(js, "execution_count", None)
+    widget(js)
     st = StringIO()
     json.dump(js, st, indent=indent, sort_keys=True)
     res = st.getvalue()

From 303d59a5e5c7e3c87d57cdeaecb8e2d19c6c1e64 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?xavier=20dupr=C3=A9?= <xavier.dupre@gmail.com>
Date: Sun, 24 Jul 2022 17:01:07 +0200
Subject: [PATCH 3/7] Adds missing variable env for sphinx application

---
 .../sphinxm_convert_doc_sphinx_helper.py      | 145 ++++++------------
 1 file changed, 50 insertions(+), 95 deletions(-)

diff --git a/src/pyquickhelper/helpgen/sphinxm_convert_doc_sphinx_helper.py b/src/pyquickhelper/helpgen/sphinxm_convert_doc_sphinx_helper.py
index 5a61797d..6f10ec60 100644
--- a/src/pyquickhelper/helpgen/sphinxm_convert_doc_sphinx_helper.py
+++ b/src/pyquickhelper/helpgen/sphinxm_convert_doc_sphinx_helper.py
@@ -131,12 +131,12 @@ def eval_expr(self, expr):
         doctree = self.output_format in ('doctree', 'doctree.txt')
         if not(rst or html or latex or md or doctree):
             raise ValueError(  # pragma: no cover
-                "Unknown output format '{0}'.".format(self.output_format))
+                f"Unknown output format '{self.output_format}'.")
         try:
             ev = eval(expr)
         except Exception:  # pragma: no cover
             raise ValueError(
-                "Unable to interpret expression '{0}'".format(expr))
+                f"Unable to interpret expression '{expr}'")
         return ev
 
     def visit_only(self, node):
@@ -258,7 +258,7 @@ def __init__(self, document, builder, *args, **kwds):
             builder, document = document, builder
         if not hasattr(builder, "config"):
             raise TypeError(  # pragma: no cover
-                "Builder has no config: {} - {}".format(type(builder), type(document)))
+                f"Builder has no config: {type(builder)} - {type(document)}")
         EnhancedLaTeXTranslator.__init__(
             self, document, builder, *args, **kwds)
         _AdditionalVisitDepart.__init__(self, 'md')
@@ -433,17 +433,22 @@ def __init__(self, builder=None, app=None):  # pylint: disable=W0231
             self, EnhancedLaTeXWriter, LatexTranslatorWithCustomDirectives, app)
         if not hasattr(self.builder, "config"):
             raise TypeError(  # pragma: no cover
-                "Builder has no config: {}".format(type(self.builder)))
+                f"Builder has no config: {type(self.builder)}")
 
     def translate(self):
         if not hasattr(self.builder, "config"):
             raise TypeError(  # pragma: no cover
-                "Builder has no config: {}".format(type(self.builder)))
+                f"Builder has no config: {type(self.builder)}")
         # The instruction
         # visitor = self.builder.create_translator(self.document, self.builder)
         # automatically adds methods visit_ and depart_ for translator
         # based on the list of registered extensions. Might be worth using it.
-        visitor = self.translator_class(self.document, self.builder)
+        theme = self.builder.themes.get('manual')
+        if theme is None:
+            raise RuntimeError(  # pragma: no cover
+                "theme cannot be None.")
+        visitor = self.translator_class(
+            self.document, self.builder, theme=theme)
         self.document.walkabout(visitor)
         self.output = visitor.body
 
@@ -455,7 +460,7 @@ class _MemoryBuilder:
     :epkg:`builderapi`.
     """
 
-    def _init(self, base_class, app):
+    def _init(self, base_class, app, env=None):
         """
         Constructs the builder.
         Most of the parameter are static members of the class and cannot
@@ -463,6 +468,7 @@ def _init(self, base_class, app):
 
         :param base_class: base builder class
         :param app: :epkg:`Sphinx application`
+        :param env: Environment
         """
         if "IMPOSSIBLE:TOFIND" in app.srcdir:
             import sphinx.util.osutil
@@ -470,7 +476,7 @@ def _init(self, base_class, app):
             sphinx.util.osutil.ensuredir = custom_ensuredir
             sphinx.builders.ensuredir = custom_ensuredir
 
-        base_class.__init__(self, app=app)
+        base_class.__init__(self, app=app, env=env)
         self.built_pages = {}
         self.base_class = base_class
 
@@ -558,15 +564,15 @@ def get_target_uri(self, docname, typ=None):
             return self.config.master_doc + '-#' + docname
         else:
             docs = ", ".join(  # pragma: no cover
-                sorted("'{0}'".format(_) for _ in self.env.all_docs))
+                sorted(f"'{_}'" for _ in self.env.all_docs))
             raise ValueError(  # pragma: no cover
-                "docname='{0}' should be in 'self.env.all_docs' which contains:\n{1}".format(docname, docs))
+                f"docname='{docname}' should be in 'self.env.all_docs' which contains:\n{docs}")
 
     def get_outfilename(self, pagename):
         """
         Overwrites *get_target_uri* to control file names.
         """
-        return "{0}/{1}.m.html".format(self.outdir, pagename).replace("\\", "/")
+        return f"{self.outdir}/{pagename}.m.html".replace("\\", "/")
 
     def handle_page(self, pagename, addctx, templatename='page.html',
                     outfilename=None, event_arg=None):
@@ -606,8 +612,8 @@ def css_tag(css):
                 if value is not None:
                     attrs.append('%s="%s"' % (key, htmlescape(    # pylint: disable=W1505
                         value, True)))  # pylint: disable=W1505
-            attrs.append('href="%s"' % pathto(css.filename, resource=True))
-            return '<link %s />' % ' '.join(attrs)
+            attrs.append(f'href="{pathto(css.filename, resource=True)}"')
+            return f"<link {' '.join(attrs)} />"
         ctx['css_tag'] = css_tag
 
         def hasdoc(name):
@@ -665,7 +671,7 @@ class MemoryHTMLBuilder(_MemoryBuilder, CustomSingleFileHTMLBuilder):
     supported_data_uri_images = True
     html_scaled_image_link = True
 
-    def __init__(self, app):  # pylint: disable=W0231
+    def __init__(self, app, env=None):  # pylint: disable=W0231
         """
         Construct the builder.
         Most of the parameter are static members of the class and cannot
@@ -673,7 +679,7 @@ def __init__(self, app):  # pylint: disable=W0231
 
         :param app: :epkg:`Sphinx application`
         """
-        _MemoryBuilder._init(self, CustomSingleFileHTMLBuilder, app)
+        _MemoryBuilder._init(self, CustomSingleFileHTMLBuilder, app, env=env)
 
 
 class MemoryRSTBuilder(_MemoryBuilder, RstBuilder):
@@ -697,7 +703,7 @@ class MemoryRSTBuilder(_MemoryBuilder, RstBuilder):
     supported_data_uri_images = True
     html_scaled_image_link = True
 
-    def __init__(self, app):  # pylint: disable=W0231
+    def __init__(self, app, env=None):  # pylint: disable=W0231
         """
         Construct the builder.
         Most of the parameter are static members of the class and cannot
@@ -705,7 +711,7 @@ def __init__(self, app):  # pylint: disable=W0231
 
         :param app: :epkg:`Sphinx application`
         """
-        _MemoryBuilder._init(self, RstBuilder, app)
+        _MemoryBuilder._init(self, RstBuilder, app, env=env)
 
     def handle_page(self, pagename, addctx, templatename=None,
                     outfilename=None, event_arg=None):
@@ -739,7 +745,7 @@ class MemoryMDBuilder(_MemoryBuilder, MdBuilder):
     supported_data_uri_images = True
     html_scaled_image_link = True
 
-    def __init__(self, app):  # pylint: disable=W0231
+    def __init__(self, app, env=None):  # pylint: disable=W0231
         """
         Construct the builder.
         Most of the parameter are static members of the class and cannot
@@ -747,7 +753,7 @@ def __init__(self, app):  # pylint: disable=W0231
 
         :param app: :epkg:`Sphinx application`
         """
-        _MemoryBuilder._init(self, MdBuilder, app)
+        _MemoryBuilder._init(self, MdBuilder, app, env=env)
 
     def handle_page(self, pagename, addctx, templatename=None,
                     outfilename=None, event_arg=None):
@@ -780,7 +786,7 @@ class MemoryDocTreeBuilder(_MemoryBuilder, DocTreeBuilder):
     supported_data_uri_images = True
     html_scaled_image_link = True
 
-    def __init__(self, app):  # pylint: disable=W0231
+    def __init__(self, app, env=None):  # pylint: disable=W0231
         """
         Constructs the builder.
         Most of the parameter are static members of the class and cannot
@@ -788,7 +794,7 @@ def __init__(self, app):  # pylint: disable=W0231
 
         :param app: :epkg:`Sphinx application`
         """
-        _MemoryBuilder._init(self, DocTreeBuilder, app)
+        _MemoryBuilder._init(self, DocTreeBuilder, app, env=env)
 
     def handle_page(self, pagename, addctx, templatename=None,
                     outfilename=None, event_arg=None):
@@ -822,7 +828,7 @@ class MemoryLatexBuilder(_MemoryBuilder, EnhancedLaTeXBuilder):
     supported_data_uri_images = True
     html_scaled_image_link = True
 
-    def __init__(self, app):  # pylint: disable=W0231
+    def __init__(self, app, env=None):  # pylint: disable=W0231
         """
         Constructs the builder.
         Most of the parameter are static members of the class and cannot
@@ -830,7 +836,7 @@ def __init__(self, app):  # pylint: disable=W0231
 
         :param app: :epkg:`Sphinx application`
         """
-        _MemoryBuilder._init(self, EnhancedLaTeXBuilder, app)
+        _MemoryBuilder._init(self, EnhancedLaTeXBuilder, app, env=env)
 
     def write_stylesheet(self):
         from sphinx.highlighting import PygmentsBridge
@@ -855,7 +861,7 @@ def write(self, content):
     def _get_filename(self, targetname, encoding='utf-8', overwrite_if_changed=True):
         if not isinstance(targetname, str):
             raise TypeError(  # pragma: no cover
-                "targetname must be a string: {0}".format(targetname))
+                f"targetname must be a string: {targetname}")
         destination = MemoryLatexBuilder.EnhancedStringIO()
         self.built_pages[targetname] = destination
         return destination
@@ -1028,8 +1034,7 @@ def __init__(self, srcdir, confdir, outdir, doctreedir, buildername="memoryhtml"
 
         # say hello to the world
         from sphinx import __display_version__
-        self.info('Running Sphinx v%s' %
-                  __display_version__)  # pragma: no cover
+        self.info(f'Running Sphinx v{__display_version__}')  # pragma: no cover
 
         # notice for parallel build on macOS and py38+
         if sys.version_info > (3, 8) and platform.system() == 'Darwin' and parallel > 1:
@@ -1043,13 +1048,7 @@ def __init__(self, srcdir, confdir, outdir, doctreedir, buildername="memoryhtml"
 
         # delayed import to speed up time
         from sphinx.application import builtin_extensions
-        try:
-            from sphinx.application import CONFIG_FILENAME, Config, Tags
-            sphinx_version = 2  # pragma: no cover
-        except ImportError:
-            # Sphinx 3.0.0
-            from sphinx.config import CONFIG_FILENAME, Config, Tags
-            sphinx_version = 3
+        from sphinx.config import CONFIG_FILENAME, Config, Tags
 
         # read config
         self.tags = Tags(tags)
@@ -1076,11 +1075,6 @@ def __init__(self, srcdir, confdir, outdir, doctreedir, buildername="memoryhtml"
         self.sphinx__display_version__ = __display_version__
 
         # create the environment
-        if sphinx_version == 2:  # pragma: no cover
-            with warnings.catch_warnings():
-                warnings.simplefilter(
-                    "ignore", (DeprecationWarning, PendingDeprecationWarning, ImportWarning))
-                self.config.check_unicode()
         self.config.pre_init_values()
 
         # set up translation infrastructure
@@ -1152,7 +1146,7 @@ def __init__(self, srcdir, confdir, outdir, doctreedir, buildername="memoryhtml"
 
         # the config file itself can be an extension
         if self.config.setup:
-            prefix = 'while setting up extension %s:' % "conf.py"
+            prefix = f"while setting up extension {'conf.py'}:"
             if prefixed_warnings is not None:
                 with prefixed_warnings(prefix):
                     if callable(self.config.setup):
@@ -1218,7 +1212,7 @@ def _citems():
 
         if not isinstance(self.env, _CustomBuildEnvironment):
             raise TypeError(  # pragma: no cover
-                "self.env is not _CustomBuildEnvironment: '{0}' buildername='{1}'".format(type(self.env), buildername))
+                f"self.env is not _CustomBuildEnvironment: '{type(self.env)}' buildername='{buildername}'")
 
         # addition
         self._extended_init_()
@@ -1247,7 +1241,7 @@ def _init_env(self, freshenv):
                     self.env.setup(self)
                 self.info('done')
             except Exception as err:
-                self.info('failed: %s' % err)
+                self.info('failed: %r', err)
                 self._init_env(freshenv=True)
         elif self.env is None:  # pragma: no cover
             self.env = _CustomBuildEnvironment(self)
@@ -1265,7 +1259,7 @@ def create_builder(self, name):
             raise ValueError(  # pragma: no cover
                 "Builder name cannot be None")
 
-        return self.registry.create_builder(self, name)
+        return self.registry.create_builder(self, name, env=self.env)
 
     def _extended_init_(self):
         """
@@ -1309,7 +1303,7 @@ def finalize(self, doctree, external_docnames=None):
 
         if not isinstance(self.env, _CustomBuildEnvironment):
             raise TypeError(  # pragma: no cover
-                "self.env is not _CustomBuildEnvironment: '{0}'".format(type(self.env)))
+                f"self.env is not _CustomBuildEnvironment: '{type(self.env)}'")
         if not isinstance(self.builder.env, _CustomBuildEnvironment):
             raise TypeError(  # pragma: no cover
                 "self.builder.env is not _CustomBuildEnvironment: '{0}'".format(
@@ -1356,12 +1350,7 @@ def add_builder(self, builder, override=False):
         self._added_objects.append(('builder', builder))
         if builder.name not in self.registry.builders:
             self.debug('[_CustomSphinx]  adding builder: %r', builder)
-            try:
-                # Sphinx >= 1.8
-                self.registry.add_builder(builder, override=override)
-            except TypeError:  # pragma: no cover
-                # Sphinx < 1.8
-                self.registry.add_builder(builder)
+            self.registry.add_builder(builder, override=override)
         else:
             self.debug('[_CustomSphinx]  already added builder: %r', builder)
 
@@ -1380,11 +1369,11 @@ def setup_extension(self, extname):
                 self.registry.load_extension(self, extname)
         except Exception as e:  # pragma: no cover
             raise ExtensionError(
-                "Unable to setup extension '{0}'".format(extname)) from e
+                f"Unable to setup extension '{extname}'") from e
         finally:
             logger.logger = disa
 
-    def add_directive(self, name, obj, content=None, arguments=None,  # pylint: disable=W0221
+    def add_directive(self, name, obj, content=None, arguments=None,  # pylint: disable=W0221,W0237
                       override=True, **options):
         self._added_objects.append(('directive', name))
         if name == 'plot' and obj.__name__ == 'PlotDirective':
@@ -1394,64 +1383,36 @@ def add_directive(self, name, obj, content=None, arguments=None,  # pylint: disa
             def run(self):
                 """Run the plot directive."""
                 logger = getLogger("MockSphinxApp")
-                logger.info(
-                    '[MockSphinxApp] PlotDirective: {}'.format(self.content))
+                logger.info('[MockSphinxApp] PlotDirective: %r', self.content)
                 try:
                     res = old_run(self)
-                    logger.info(
-                        '[MockSphinxApp] PlotDirective ok')
+                    logger.info('[MockSphinxApp] PlotDirective ok')
                     return res
                 except OSError as e:  # pragma: no cover
                     logger = getLogger("MockSphinxApp")
-                    logger.info(
-                        '[MockSphinxApp] PlotDirective failed: {}'.format(e))
+                    logger.info('[MockSphinxApp] PlotDirective failed: %s', e)
                 return []
 
             obj.run = run
 
-        try:
-            # Sphinx >= 1.8
-            Sphinx.add_directive(self, name, obj, content=content,  # pylint: disable=E1123
-                                 arguments=arguments,
-                                 override=override, **options)
-        except TypeError:
-            # Sphinx >= 3.0.0
-            Sphinx.add_directive(self, name, obj, override=override, **options)
-        except ExtensionError:  # pragma: no cover
-            # Sphinx < 1.8
-            Sphinx.add_directive(self, name, obj, content=content,  # pylint: disable=E1123
-                                 arguments=arguments, **options)
+        Sphinx.add_directive(self, name, obj, override=override, **options)
 
     def add_domain(self, domain, override=True):
         self._added_objects.append(('domain', domain))
-        try:
-            # Sphinx >= 1.8
-            Sphinx.add_domain(self, domain, override=override)
-        except TypeError:  # pragma: no cover
-            # Sphinx < 1.8
-            Sphinx.add_domain(self, domain)
+        Sphinx.add_domain(self, domain, override=override)
         # For some reason, the directives are missing from the main catalog
         # in docutils.
         for k, v in domain.directives.items():
-            self.add_directive("{0}:{1}".format(domain.name, k), v)
+            self.add_directive(f"{domain.name}:{k}", v)
             if domain.name in ('py', 'std', 'rst'):
                 # We add the directive without the domain name as a prefix.
                 self.add_directive(k, v)
         for k, v in domain.roles.items():
-            self.add_role("{0}:{1}".format(domain.name, k), v)
+            self.add_role(f"{domain.name}:{k}", v)
             if domain.name in ('py', 'std', 'rst'):
                 # We add the role without the domain name as a prefix.
                 self.add_role(k, v)
 
-    def override_domain(self, domain):
-        self._added_objects.append(('domain-over', domain))
-        try:
-            Sphinx.override_domain(self, domain)
-        except AttributeError:  # pragma: no cover
-            # Sphinx==3.0.0
-            raise AttributeError(
-                "override_domain not available in sphinx==3.0.0")
-
     def add_role(self, name, role, override=True):
         self._added_objects.append(('role', name))
         self.debug('[_CustomSphinx]  adding role: %r', (name, role))
@@ -1511,17 +1472,11 @@ def add_config_value(self, name, default, rebuild, types_=()):  # pylint: disabl
         self._added_objects.append(('config_value', name))
         Sphinx.add_config_value(self, name, default, rebuild, types_)
 
-    def add_directive_to_domain(self, domain, name, obj, has_content=None,  # pylint: disable=W0221
+    def add_directive_to_domain(self, domain, name, obj, has_content=None,  # pylint: disable=W0221,W0237
                                 argument_spec=None, override=False, **option_spec):
         self._added_objects.append(('directive_to_domain', domain, name))
-        try:
-            Sphinx.add_directive_to_domain(self, domain, name, obj,  # pylint: disable=E1123
-                                           has_content=has_content, argument_spec=argument_spec,
-                                           override=override, **option_spec)
-        except TypeError:  # pragma: no cover
-            # Sphinx==3.0.0
-            Sphinx.add_directive_to_domain(self, domain, name, obj,
-                                           override=override, **option_spec)
+        Sphinx.add_directive_to_domain(self, domain, name, obj,
+                                       override=override, **option_spec)
 
     def add_role_to_domain(self, domain, name, role, override=False):
         self._added_objects.append(('roles_to_domain', domain, name))

From cd99acf8697396f212594cf14918c2623594083a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?xavier=20dupr=C3=A9?= <xavier.dupre@gmail.com>
Date: Sun, 24 Jul 2022 17:41:35 +0200
Subject: [PATCH 4/7] update for latest sphinx

---
 _unittests/ut_helpgen/test_rst2html.py        | 31 ++++---------------
 .../ut_sphinxext/test_builders_missing.py     |  3 +-
 .../ut_sphinxext/test_tocdelay_extension.py   |  6 +++-
 .../sphinxm_convert_doc_sphinx_helper.py      |  1 +
 .../sphinxext/sphinx_latex_builder.py         | 16 ++++++++--
 5 files changed, 28 insertions(+), 29 deletions(-)

diff --git a/_unittests/ut_helpgen/test_rst2html.py b/_unittests/ut_helpgen/test_rst2html.py
index 0ee3b459..18c03968 100644
--- a/_unittests/ut_helpgen/test_rst2html.py
+++ b/_unittests/ut_helpgen/test_rst2html.py
@@ -2,24 +2,17 @@
 @brief      test log(time=8s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
-
-from pyquickhelper.loghelper.flog import fLOG
-from pyquickhelper.pycode import get_temp_folder, is_travis_or_appveyor
+from pyquickhelper.pycode import (
+    get_temp_folder, is_travis_or_appveyor, ignore_warnings)
 from pyquickhelper.helpgen import rst2html
 
 
 class TestRst2Html(unittest.TestCase):
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_rst2html_png(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         if is_travis_or_appveyor() in ('travis', 'appveyor'):
             # It requires latex.
             return
@@ -41,12 +34,8 @@ def test_rst2html_png(self):
             f.write(text)
         self.assertTrue(len(text2) > len(text))
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_rst2html_svg(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         if is_travis_or_appveyor() in ('travis', 'appveyor'):
             # It requires latex.
             return
@@ -66,12 +55,8 @@ def test_rst2html_svg(self):
             f.write(text)
         self.assertTrue(len(text2) > len(text))
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_rst2html_plot_rst(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         temp = get_temp_folder(__file__, "temp_rst2html_plot_rst")
         rst = os.path.join(os.path.abspath(
             os.path.dirname(__file__)), "data", "rstplot.rst")
@@ -90,12 +75,8 @@ def test_rst2html_plot_rst(self):
         with open(ji, "w", encoding="utf-8") as f:
             f.write(text)
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_rst2html_plot_html(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         temp = get_temp_folder(__file__, "temp_rst2html_plot_html")
         rst = os.path.join(os.path.abspath(
             os.path.dirname(__file__)), "data", "rstplot.rst")
diff --git a/_unittests/ut_sphinxext/test_builders_missing.py b/_unittests/ut_sphinxext/test_builders_missing.py
index 5c742b96..546b1f0e 100644
--- a/_unittests/ut_sphinxext/test_builders_missing.py
+++ b/_unittests/ut_sphinxext/test_builders_missing.py
@@ -4,7 +4,7 @@
 """
 import os
 import unittest
-from pyquickhelper.pycode import ExtTestCase
+from pyquickhelper.pycode import ExtTestCase, ignore_warnings
 from pyquickhelper.sphinxext.sphinx_doctree_builder import DocTreeTranslator
 from pyquickhelper.sphinxext.sphinx_latex_builder import EnhancedLaTeXTranslator
 from pyquickhelper.sphinxext.sphinx_md_builder import MdTranslator
@@ -13,6 +13,7 @@
 
 class TestBuildersMissing(ExtTestCase):
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_builders_missing(self):
         from docutils import nodes as skip_
         from sphinx.builders.latex.util import ExtBabel
diff --git a/_unittests/ut_sphinxext/test_tocdelay_extension.py b/_unittests/ut_sphinxext/test_tocdelay_extension.py
index 0f357c1b..39da0bc4 100644
--- a/_unittests/ut_sphinxext/test_tocdelay_extension.py
+++ b/_unittests/ut_sphinxext/test_tocdelay_extension.py
@@ -9,7 +9,7 @@
 import warnings
 from docutils.parsers.rst import directives
 from sphinx.errors import ExtensionError
-from pyquickhelper.pycode import get_temp_folder
+from pyquickhelper.pycode import get_temp_folder, ignore_warnings
 from pyquickhelper.helpgen import rst2html, rst2rst_folder
 from pyquickhelper.sphinxext import TocDelayDirective
 
@@ -19,6 +19,7 @@ class TestTocDelayExtension(unittest.TestCase):
     def test_post_parse(self):
         directives.register_directive("tocdelay", TocDelayDirective)
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_regex(self):
         s = "2016-06-11 - Make a reference to a blog post <2016/2016-06-11_blogpost_with_label>"
         reg = TocDelayDirective.regex_title
@@ -28,6 +29,7 @@ def test_regex(self):
                          ("2016-06-11 - Make a reference to a blog post",
                           "2016/2016-06-11_blogpost_with_label"))
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_tocdelay1(self):
         content = """
                     .. tocdelay::
@@ -41,6 +43,7 @@ def test_tocdelay1(self):
         except ValueError as e:
             self.assertIn("No found document", str(e))
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_tocdelay2(self):
         path = os.path.abspath(os.path.dirname(__file__))
         path = os.path.join(path, "data", "blog")
@@ -58,6 +61,7 @@ def test_tocdelay2(self):
             self.assertIn(
                 "event 'doctree-resolved' threw an exception", str(e))
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_tocdelay3(self):
         temp = get_temp_folder(__file__, "temp_tocdelay3")
         path = os.path.abspath(os.path.dirname(__file__))
diff --git a/src/pyquickhelper/helpgen/sphinxm_convert_doc_sphinx_helper.py b/src/pyquickhelper/helpgen/sphinxm_convert_doc_sphinx_helper.py
index 6f10ec60..22f7eef7 100644
--- a/src/pyquickhelper/helpgen/sphinxm_convert_doc_sphinx_helper.py
+++ b/src/pyquickhelper/helpgen/sphinxm_convert_doc_sphinx_helper.py
@@ -999,6 +999,7 @@ def __init__(self, srcdir, confdir, outdir, doctreedir, buildername="memoryhtml"
         self.project = None
         self.registry = SphinxComponentRegistry()
         self.post_transforms = []
+        self.pdb = False
 
         if doctreedir is None:
             doctreedir = "IMPOSSIBLE:TOFIND"
diff --git a/src/pyquickhelper/sphinxext/sphinx_latex_builder.py b/src/pyquickhelper/sphinxext/sphinx_latex_builder.py
index a5ea88dd..5c9e3ae3 100644
--- a/src/pyquickhelper/sphinxext/sphinx_latex_builder.py
+++ b/src/pyquickhelper/sphinxext/sphinx_latex_builder.py
@@ -29,17 +29,29 @@ def write(self, data):
         return res
 
 
+class DummySphinxTheme:
+    """
+    Dummy theme for sphinx.
+    """
+
+    def __init__(self):
+        self.toplevel_sectioning = "section"
+    
+
+
 class EnhancedLaTeXTranslator(LaTeXTranslator):
     """
     Overwrites `LaTeXTranslator <https://github.com/sphinx-doc/sphinx/blob/master/sphinx/writers/latex.py#L451>`_
     and modifies a few functions.
     """
 
-    def __init__(self, document, builder):
+    def __init__(self, document, builder, theme=None):
         if not hasattr(builder, 'config'):
             raise TypeError(
                 "Unexpected type for builder {0}".format(type(builder)))
-        LaTeXTranslator.__init__(self, document, builder)
+        if theme is None:
+            theme = DummySphinxTheme()
+        LaTeXTranslator.__init__(self, document, builder, theme=theme)
 
         newlines = builder.config.text_newlines
         if newlines == 'windows':

From e495983468b3c32b2d5936f78c9ede17270fc5ae Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?xavier=20dupr=C3=A9?= <xavier.dupre@gmail.com>
Date: Sun, 24 Jul 2022 17:49:39 +0200
Subject: [PATCH 5/7] lint

---
 src/pyquickhelper/sphinxext/sphinx_latex_builder.py | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/pyquickhelper/sphinxext/sphinx_latex_builder.py b/src/pyquickhelper/sphinxext/sphinx_latex_builder.py
index 26bc6513..d0928958 100644
--- a/src/pyquickhelper/sphinxext/sphinx_latex_builder.py
+++ b/src/pyquickhelper/sphinxext/sphinx_latex_builder.py
@@ -36,7 +36,6 @@ class DummySphinxTheme:
 
     def __init__(self):
         self.toplevel_sectioning = "section"
-    
 
 
 class EnhancedLaTeXTranslator(LaTeXTranslator):

From e929c52032bffd721340c6a84e85cb6b948d5bc2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?xavier=20dupr=C3=A9?= <xavier.dupre@gmail.com>
Date: Mon, 25 Jul 2022 10:56:27 +0200
Subject: [PATCH 6/7] remove flog, sys in some unit tests

---
 _unittests/ut_sphinxext/test_autosignature.py |  6 +-
 .../ut_sphinxext/test_autosignature_bug.py    |  9 +-
 .../ut_sphinxext/test_bigger_extension.py     | 30 ++-----
 .../ut_sphinxext/test_blocref_extension.py    | 47 +++-------
 .../ut_sphinxext/test_blog_extension.py       | 21 +++--
 _unittests/ut_sphinxext/test_blog_helper.py   | 14 +--
 _unittests/ut_sphinxext/test_blog_list.py     | 14 +--
 .../ut_sphinxext/test_bokeh_extension.py      | 14 +--
 .../ut_sphinxext/test_cmdref_extension.py     | 31 ++++---
 .../ut_sphinxext/test_collapse_extension.py   | 12 +--
 _unittests/ut_sphinxext/test_doc_bug.py       | 12 +--
 _unittests/ut_sphinxext/test_docassert.py     | 34 +------
 .../ut_sphinxext/test_doctree_builder.py      | 30 +++----
 .../test_downloadlink_extension.py            |  3 -
 .../ut_sphinxext/test_epkg_extension.py       | 28 ++----
 .../ut_sphinxext/test_exref_extension.py      | 35 ++------
 _unittests/ut_sphinxext/test_ext_helper.py    |  2 -
 .../ut_sphinxext/test_faqref_extension.py     | 34 ++-----
 .../ut_sphinxext/test_gdot_extension.py       |  3 -
 .../ut_sphinxext/test_githublink_extension.py | 49 ++--------
 .../ut_sphinxext/test_gitlog_extension.py     | 26 +-----
 .../ut_sphinxext/test_image_extension.py      | 21 +----
 .../ut_sphinxext/test_import_any_object.py    |  8 +-
 _unittests/ut_sphinxext/test_latex_builder.py | 27 ++----
 .../ut_sphinxext/test_mathdef_extension.py    | 51 +++--------
 _unittests/ut_sphinxext/test_md_builder.py    | 44 +++++----
 .../ut_sphinxext/test_nbref_extension.py      | 32 ++-----
 .../test_postcontents_extension.py            | 23 +----
 .../ut_sphinxext/test_quote_extension.py      | 31 +++----
 .../ut_sphinxext/test_revealsjs_directives.py | 86 +++++++++---------
 _unittests/ut_sphinxext/test_rst_builder.py   | 31 +++----
 .../ut_sphinxext/test_runpython_code_block.py |  3 -
 .../ut_sphinxext/test_runpython_context.py    |  3 -
 .../ut_sphinxext/test_runpython_extension.py  | 89 +++----------------
 .../test_runpython_extension_image.py         | 18 +---
 .../test_runpython_extension_toggle.py        | 20 +----
 .../test_runpython_store_in_file.py           |  3 -
 .../ut_sphinxext/test_sharenet_extension.py   | 19 ++--
 .../test_simpleimage_extension.py             |  7 +-
 _unittests/ut_sphinxext/test_style_doc.py     | 18 ++--
 .../ut_sphinxext/test_template_extension.py   | 32 ++-----
 .../ut_sphinxext/test_thumbnail_extension.py  | 21 +----
 .../ut_sphinxext/test_tocdelay_extension.py   |  6 +-
 .../ut_sphinxext/test_todoext_extension.py    | 37 ++------
 .../ut_sphinxext/test_video_extension.py      | 49 +---------
 .../ut_sphinxext/test_youtube_extension.py    | 45 ++--------
 .../sphinxm_convert_doc_sphinx_helper.py      |  7 +-
 47 files changed, 296 insertions(+), 889 deletions(-)

diff --git a/_unittests/ut_sphinxext/test_autosignature.py b/_unittests/ut_sphinxext/test_autosignature.py
index 212f3ae6..ded7e875 100644
--- a/_unittests/ut_sphinxext/test_autosignature.py
+++ b/_unittests/ut_sphinxext/test_autosignature.py
@@ -9,8 +9,10 @@
 import numpy
 from pyquickhelper.loghelper import sys_path_append
 from pyquickhelper.pycode import ExtTestCase
-from pyquickhelper.sphinxext.import_object_helper import import_object, import_any_object, import_path
-from pyquickhelper.sphinxext.sphinx_autosignature import enumerate_extract_signature, enumerate_cleaned_signature
+from pyquickhelper.sphinxext.import_object_helper import (
+    import_object, import_any_object, import_path)
+from pyquickhelper.sphinxext.sphinx_autosignature import (
+    enumerate_extract_signature, enumerate_cleaned_signature)
 from pyquickhelper.helpgen import rst2html
 
 
diff --git a/_unittests/ut_sphinxext/test_autosignature_bug.py b/_unittests/ut_sphinxext/test_autosignature_bug.py
index 1a6fa04f..cc4d3967 100644
--- a/_unittests/ut_sphinxext/test_autosignature_bug.py
+++ b/_unittests/ut_sphinxext/test_autosignature_bug.py
@@ -2,17 +2,16 @@
 @brief      test log(time=8s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
 import pandas
 import numpy
-
 from pyquickhelper.loghelper import sys_path_append
 from pyquickhelper.pycode import ExtTestCase
-from pyquickhelper.sphinxext.import_object_helper import import_object, import_any_object, import_path
-from pyquickhelper.sphinxext.sphinx_autosignature import enumerate_extract_signature, enumerate_cleaned_signature
+from pyquickhelper.sphinxext.import_object_helper import (
+    import_object, import_any_object, import_path)
+from pyquickhelper.sphinxext.sphinx_autosignature import (
+    enumerate_extract_signature, enumerate_cleaned_signature)
 from pyquickhelper.helpgen import rst2html
 
 
diff --git a/_unittests/ut_sphinxext/test_bigger_extension.py b/_unittests/ut_sphinxext/test_bigger_extension.py
index 0fc1d7d7..7874be7f 100644
--- a/_unittests/ut_sphinxext/test_bigger_extension.py
+++ b/_unittests/ut_sphinxext/test_bigger_extension.py
@@ -2,14 +2,10 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
 import warnings
-
-from pyquickhelper.loghelper.flog import fLOG
-from pyquickhelper.pycode import get_temp_folder
+from pyquickhelper.pycode import get_temp_folder, ignore_warnings
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.sphinxext import bigger_role
 from docutils.parsers.rst.roles import register_canonical_role
@@ -17,20 +13,12 @@
 
 class TestBiggerExtension(unittest.TestCase):
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_post_parse_sn(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         register_canonical_role("bigger", bigger_role)
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_bigger(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -45,8 +33,7 @@ def test_bigger(self):
 
                     this code shoud appear
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         html = rst2html(content,  # fLOG=fLOG,
                         writer="html", keep_warnings=True,
@@ -80,12 +67,8 @@ def test_bigger(self):
         with open(os.path.join(temp, "out_bigger.html"), "w", encoding="utf8") as f:
             f.write(html)
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_bigger_inline(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -94,8 +77,7 @@ def test_bigger_inline(self):
 
                     abeforea :bigger:`facebook` aaftera
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         html = rst2html(content,  # fLOG=fLOG,
                         writer="html", keep_warnings=True,
diff --git a/_unittests/ut_sphinxext/test_blocref_extension.py b/_unittests/ut_sphinxext/test_blocref_extension.py
index e80257c5..c9984c3b 100644
--- a/_unittests/ut_sphinxext/test_blocref_extension.py
+++ b/_unittests/ut_sphinxext/test_blocref_extension.py
@@ -2,14 +2,11 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
 from docutils.parsers.rst import directives
-
 from pyquickhelper.loghelper.flog import fLOG
-from pyquickhelper.pycode import get_temp_folder
+from pyquickhelper.pycode import get_temp_folder, ignore_warnings
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.sphinxext import BlocRef, BlocRefList
 from pyquickhelper.sphinxext.sphinx_blocref_extension import blocref_node, visit_blocref_node, depart_blocref_node
@@ -17,21 +14,13 @@
 
 class TestBlocRefExtension(unittest.TestCase):
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_post_parse_blocref(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         directives.register_directive("blocref", BlocRef)
         directives.register_directive("blocreflist", BlocRefList)
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_blocref_rst(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -49,8 +38,7 @@ def test_blocref_rst(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("blocref", BlocRef, blocref_node,
                   visit_blocref_node, depart_blocref_node)]
@@ -77,12 +65,8 @@ def test_blocref_rst(self):
         if "<SYSTEM MESSAGE" in html:
             raise Exception(html)
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_blocref_html(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -100,8 +84,7 @@ def test_blocref_html(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("blocref", BlocRef, blocref_node,
                   visit_blocref_node, depart_blocref_node)]
@@ -128,12 +111,8 @@ def test_blocref_html(self):
         if "<SYSTEM MESSAGE" in html:
             raise Exception(html)
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_blocref2(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -151,8 +130,7 @@ def test_blocref2(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("blocref", BlocRef, blocref_node,
                   visit_blocref_node, depart_blocref_node)]
@@ -177,12 +155,8 @@ def test_blocref2(self):
         if t1 not in html:
             raise Exception(html)
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_blocreflist(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -207,8 +181,7 @@ def test_blocreflist(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("blocref", BlocRef, blocref_node,
                   visit_blocref_node, depart_blocref_node)]
diff --git a/_unittests/ut_sphinxext/test_blog_extension.py b/_unittests/ut_sphinxext/test_blog_extension.py
index 307414c1..a1835937 100644
--- a/_unittests/ut_sphinxext/test_blog_extension.py
+++ b/_unittests/ut_sphinxext/test_blog_extension.py
@@ -2,25 +2,25 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
 from docutils.parsers.rst import directives
-
-from pyquickhelper.pycode import get_temp_folder
+from pyquickhelper.pycode import get_temp_folder, ignore_warnings
 from pyquickhelper.helpgen import rst2html
-from pyquickhelper.sphinxext.sphinx_blog_extension import BlogPostDirective, BlogPostDirectiveAgg
-from pyquickhelper.sphinxext.sphinx_blog_extension import blogpost_node, visit_blogpost_node, depart_blogpost_node
-from pyquickhelper.sphinxext.sphinx_blog_extension import blogpostagg_node, visit_blogpostagg_node, depart_blogpostagg_node
+from pyquickhelper.sphinxext.sphinx_blog_extension import (
+    BlogPostDirective, BlogPostDirectiveAgg,
+    blogpost_node, visit_blogpost_node, depart_blogpost_node,
+    blogpostagg_node, visit_blogpostagg_node, depart_blogpostagg_node)
 
 
 class TestBlogExtension(unittest.TestCase):
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_post_parse_blog(self):
         directives.register_directive("blogpost", BlogPostDirective)
         directives.register_directive("blogpostagg", BlogPostDirectiveAgg)
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_blogpost(self):
 
         from docutils import nodes as skip_
@@ -42,8 +42,7 @@ def test_blogpost(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("blogpost", BlogPostDirective, blogpost_node,
                   visit_blogpost_node, depart_blogpost_node)]
@@ -71,6 +70,7 @@ def test_blogpost(self):
         self.assertIn('================', text)
         self.assertIn('after', text)
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_blogpost_agg(self):
 
         from docutils import nodes as skip_
@@ -93,8 +93,7 @@ def test_blogpost_agg(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("blogpostagg", BlogPostDirectiveAgg, blogpostagg_node,
                   visit_blogpostagg_node, depart_blogpostagg_node)]
diff --git a/_unittests/ut_sphinxext/test_blog_helper.py b/_unittests/ut_sphinxext/test_blog_helper.py
index 34cf6098..79b6adb3 100644
--- a/_unittests/ut_sphinxext/test_blog_helper.py
+++ b/_unittests/ut_sphinxext/test_blog_helper.py
@@ -2,15 +2,12 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
 import warnings
 from docutils.parsers.rst import directives
-
 from pyquickhelper.loghelper.flog import fLOG
-from pyquickhelper.pycode import get_temp_folder
+from pyquickhelper.pycode import get_temp_folder, ignore_warnings
 from pyquickhelper.sphinxext import BlogPost, BlogPostList, BlogPostDirective
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.sphinxext import RunPythonDirective
@@ -18,6 +15,7 @@
 
 class TestBlogHelper(unittest.TestCase):
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_post_parse(self):
         directives.register_directive("blogpost", BlogPostDirective)
 
@@ -33,6 +31,7 @@ def test_post_parse(self):
         self.assertEqual(
             p.Tag, "post-2015-04-04-anexampleofablogpostincludedinthedocumentation")
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_post_list(self):
         # the test will fail if you add a file in data/blog others
         # with rst files which is not a blog post
@@ -60,6 +59,7 @@ def test_post_list(self):
                     content = f.read()
                 self.assertIn('...', content)
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_directive_with_rst2html(self):
         path = os.path.abspath(os.path.split(__file__)[0])
         file = os.path.join(path, "data", "2015-04-04_first_blogpost.rst")
@@ -77,6 +77,7 @@ def test_directive_with_rst2html(self):
             p2 = html.find(t2)
             fLOG("--------------ERRORS\n", html[p1:p2], "------------")
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_docutils(self):
         # from https://gist.github.com/mastbaum/2655700
         import docutils.core
@@ -129,6 +130,7 @@ def depart_foo(self, node):
         if "<!--foo-->" not in html:
             raise Exception(html)
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_newdirective_with_rst2html(self):
         """
         this test also test the extension runpython
@@ -155,8 +157,7 @@ def depart_rp_node(self, node):
 
                         print(u"this code shoud appear" + u"___")
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("runpythonthis", RunPythonThisDirective, runpythonthis_node,
                   visit_rp_node, depart_rp_node)]
@@ -179,6 +180,7 @@ def depart_rp_node(self, node):
                     f.write(html)
                 raise Exception(html)
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_newdirective_with_rst2html_bug(self):
         from docutils import nodes
 
diff --git a/_unittests/ut_sphinxext/test_blog_list.py b/_unittests/ut_sphinxext/test_blog_list.py
index bdcdff07..17d0c183 100644
--- a/_unittests/ut_sphinxext/test_blog_list.py
+++ b/_unittests/ut_sphinxext/test_blog_list.py
@@ -2,24 +2,18 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
 from docutils.parsers.rst import directives
-
-from pyquickhelper.loghelper.flog import fLOG
+from pyquickhelper.loghelper import fLOG
+from pyquickhelper.pycode import ExtTestCase, ignore_warnings
 from pyquickhelper.sphinxext import BlogPostList, BlogPostDirective
 
 
-class TestBlogList(unittest.TestCase):
+class TestBlogList(ExtTestCase):
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_blog_list(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         directives.register_directive("blogpost", BlogPostDirective)
 
         path = os.path.abspath(os.path.split(__file__)[0])
diff --git a/_unittests/ut_sphinxext/test_bokeh_extension.py b/_unittests/ut_sphinxext/test_bokeh_extension.py
index 71531c23..1acc361d 100644
--- a/_unittests/ut_sphinxext/test_bokeh_extension.py
+++ b/_unittests/ut_sphinxext/test_bokeh_extension.py
@@ -2,24 +2,17 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-import sys
 import os
 import unittest
 import warnings
-
-from pyquickhelper.loghelper.flog import fLOG
-from pyquickhelper.pycode import get_temp_folder
+from pyquickhelper.pycode import get_temp_folder, ignore_warnings
 from pyquickhelper.helpgen import rst2html
 
 
 class TestBokehExtension(unittest.TestCase):
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_bokeh(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
         from pyquickhelper.sphinxext.bokeh.bokeh_plot import BokehPlotDirective
         self.assertTrue(BokehPlotDirective is not None)
@@ -47,8 +40,7 @@ def test_bokeh(self):
                         show(p)
 
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         html = rst2html(content,  # fLOG=fLOG,
                         writer="html", keep_warnings=True,
diff --git a/_unittests/ut_sphinxext/test_cmdref_extension.py b/_unittests/ut_sphinxext/test_cmdref_extension.py
index 2bc715bb..85f151c0 100644
--- a/_unittests/ut_sphinxext/test_cmdref_extension.py
+++ b/_unittests/ut_sphinxext/test_cmdref_extension.py
@@ -7,18 +7,23 @@
 import unittest
 from docutils.parsers.rst import directives
 import pyquickhelper
-from pyquickhelper.pycode import get_temp_folder, ExtTestCase, is_travis_or_appveyor, skipif_azure_macosx
+from pyquickhelper.pycode import (
+    get_temp_folder, ExtTestCase, is_travis_or_appveyor,
+    skipif_azure_macosx)
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.sphinxext import CmdRef, CmdRefList
-from pyquickhelper.sphinxext.sphinx_cmdref_extension import cmdref_node, visit_cmdref_node, depart_cmdref_node
+from pyquickhelper.sphinxext.sphinx_cmdref_extension import (
+    cmdref_node, visit_cmdref_node, depart_cmdref_node)
 
 
 class TestCmdRefExtension(ExtTestCase):
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_post_parse_cmdref(self):
         directives.register_directive("cmdref", CmdRef)
         directives.register_directive("cmdreflist", CmdRefList)
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_cmdref(self):
         from docutils import nodes as skip_
 
@@ -38,8 +43,7 @@ def test_cmdref(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("cmdref", CmdRef, cmdref_node,
                   visit_cmdref_node, depart_cmdref_node)]
@@ -75,6 +79,7 @@ def test_cmdref(self):
         if t1 not in html:
             raise Exception(html)
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_cmdreflist(self):
         from docutils import nodes as skip_
 
@@ -100,8 +105,7 @@ def test_cmdreflist(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("cmdref", CmdRef, cmdref_node,
                   visit_cmdref_node, depart_cmdref_node)]
@@ -131,6 +135,7 @@ def test_cmdreflist(self):
         if 'freg0"></a>' in html:
             raise Exception(html)
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_cmdref_rename(self):
         from docutils import nodes as skip_
 
@@ -150,8 +155,7 @@ def test_cmdref_rename(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("cmdref", CmdRef, cmdref_node,
                   visit_cmdref_node, depart_cmdref_node)]
@@ -171,6 +175,7 @@ def test_cmdref_rename(self):
         if t1 not in html:
             raise Exception(html)
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_cmdref_quote(self):
         from docutils import nodes as skip_
 
@@ -190,8 +195,7 @@ def test_cmdref_quote(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("cmdref", CmdRef, cmdref_node,
                   visit_cmdref_node, depart_cmdref_node)]
@@ -211,7 +215,9 @@ def test_cmdref_quote(self):
         if t1 in html:
             raise Exception(html)
 
-    @skipif_azure_macosx("The Mac OS X backend will not be able to function correctly if Python is not installed as a framework.")
+    @skipif_azure_macosx("The Mac OS X backend will not be able to "
+                         "function correctly if Python is not installed as a framework.")
+    @ignore_warnings(PendingDeprecationWarning)
     def test_cmdref_module(self):
         """
         The test fails on MACOSX if it runs from a virtual envrionment.
@@ -245,8 +251,7 @@ def test_cmdref_module(self):
 
                     after
                     """.replace("                    ", "").format(path)
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("cmdref", CmdRef, cmdref_node,
                   visit_cmdref_node, depart_cmdref_node)]
diff --git a/_unittests/ut_sphinxext/test_collapse_extension.py b/_unittests/ut_sphinxext/test_collapse_extension.py
index 8b554396..9927cdc8 100644
--- a/_unittests/ut_sphinxext/test_collapse_extension.py
+++ b/_unittests/ut_sphinxext/test_collapse_extension.py
@@ -2,12 +2,9 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
 from docutils.parsers.rst import directives
-
 from pyquickhelper.pycode import get_temp_folder, ExtTestCase
 from pyquickhelper.helpgen import rst2html
 
@@ -26,8 +23,7 @@ def test_collapse(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         temp = get_temp_folder(__file__, "temp_collapse")
 
@@ -92,8 +88,7 @@ def test_collapse_legend(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         # RST
         html = rst2html(content, writer="rst", keep_warnings=True)
@@ -127,8 +122,7 @@ def test_collapse_show(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         # RST
         html = rst2html(content, writer="rst", keep_warnings=True)
diff --git a/_unittests/ut_sphinxext/test_doc_bug.py b/_unittests/ut_sphinxext/test_doc_bug.py
index 49e66934..d635638c 100644
--- a/_unittests/ut_sphinxext/test_doc_bug.py
+++ b/_unittests/ut_sphinxext/test_doc_bug.py
@@ -2,25 +2,19 @@
 @brief      test log(time=8s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
 import warnings
-
 from pyquickhelper.loghelper.flog import fLOG
+from pyquickhelper.pycode import ExtTestCase, ignore_warnings
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.pycode import get_temp_folder
 
 
-class TestDocBug(unittest.TestCase):
+class TestDocBug(ExtTestCase):
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_param_sphinx(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
diff --git a/_unittests/ut_sphinxext/test_docassert.py b/_unittests/ut_sphinxext/test_docassert.py
index 05ee4a54..b680dfdb 100644
--- a/_unittests/ut_sphinxext/test_docassert.py
+++ b/_unittests/ut_sphinxext/test_docassert.py
@@ -2,27 +2,22 @@
 @brief      test log(time=8s)
 @author     Xavier Dupre
 """
-import sys
 import os
 from io import StringIO
 import unittest
 import warnings
 import logging
 from sphinx.util.logging import getLogger
+from pyquickhelper.pycode import ExtTestCase
 from pyquickhelper.loghelper.flog import fLOG
 from pyquickhelper.sphinxext.import_object_helper import import_object
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.loghelper import sys_path_append
 
 
-class TestDocAssert(unittest.TestCase):
+class TestDocAssert(ExtTestCase):
 
     def test_import_object(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         this = os.path.abspath(os.path.dirname(__file__))
         data = os.path.join(this, "datadoc")
         with sys_path_append(data):
@@ -31,11 +26,6 @@ def test_import_object(self):
             self.assertTrue(obj(4, 5), 9)
 
     def test_docassert_html(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         logger1 = getLogger("MockSphinxApp")
         logger2 = getLogger("docassert")
 
@@ -79,10 +69,6 @@ def test_docassert_html(self):
         self.assertTrue("<strong>a</strong>" in html)
 
     def test_docassert_html_bug(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
 
         class MyStream:
             def __init__(self):
@@ -128,10 +114,6 @@ def __len__(self):
             raise Exception("not the right warning")
 
     def test_docassert_html_method(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
 
         class MyStream:
             def __init__(self):
@@ -180,10 +162,6 @@ def __len__(self):
                 raise Exception(line)
 
     def test_docassert_html_init(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
 
         class MyStream:
             def __init__(self):
@@ -231,10 +209,6 @@ def __len__(self):
             raise Exception("not the right warning")
 
     def test_docassert_html_init2(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
 
         class MyStream:
             def __init__(self):
@@ -282,10 +256,6 @@ def __len__(self):
             raise Exception("not the right warning")
 
     def test_docassert_html_style(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
 
         class MyStream:
             def __init__(self):
diff --git a/_unittests/ut_sphinxext/test_doctree_builder.py b/_unittests/ut_sphinxext/test_doctree_builder.py
index f85026aa..bc35edad 100644
--- a/_unittests/ut_sphinxext/test_doctree_builder.py
+++ b/_unittests/ut_sphinxext/test_doctree_builder.py
@@ -2,15 +2,13 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
-
 from pyquickhelper.pycode import get_temp_folder, ExtTestCase
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.sphinxext import CmdRef
-from pyquickhelper.sphinxext.sphinx_cmdref_extension import cmdref_node, visit_cmdref_node, depart_cmdref_node
+from pyquickhelper.sphinxext.sphinx_cmdref_extension import (
+    cmdref_node, visit_cmdref_node, depart_cmdref_node)
 
 
 class TestDocTreeBuilder(ExtTestCase):
@@ -34,8 +32,7 @@ def test_doctree_builder(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("cmdref", CmdRef, cmdref_node,
                   visit_cmdref_node, depart_cmdref_node)]
@@ -106,8 +103,7 @@ def test_doctree_builder_sphinx(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("cmdref", CmdRef, cmdref_node,
                   visit_cmdref_node, depart_cmdref_node)]
@@ -168,8 +164,7 @@ def test_doctree_builder_sphinx_table(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("cmdref", CmdRef, cmdref_node,
                   visit_cmdref_node, depart_cmdref_node)]
@@ -210,8 +205,7 @@ def test_doctree_only(self):
                         not only for doctree
 
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("cmdref", CmdRef, cmdref_node,
                   visit_cmdref_node, depart_cmdref_node)]
@@ -242,8 +236,7 @@ def test_doctree_reference(self):
 
                     :py:class:`Renamed <pyquickhelper.sphinxext.sphinx_doctree_builder.DocTreeBuilder>`
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("cmdref", CmdRef, cmdref_node,
                   visit_cmdref_node, depart_cmdref_node)]
@@ -301,8 +294,7 @@ def test_doctree_reference2(self):
                         jjjj
 
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         text = rst2html(content,  # fLOG=fLOG,
                         writer="doctree", keep_warnings=False, layout='sphinx',
@@ -334,8 +326,7 @@ def test_doctree_image(self):
                         :width: 200
                         :alt: alternative2
                     """.replace("                    ", "").format(img1, img2).replace("\\", "/")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         try:
             text = rst2html(content,  # fLOG=fLOG,
@@ -365,8 +356,7 @@ def test_doctree_image_target(self):
                         :width: 200
                         :alt: alternative1
                     """.replace("                    ", "").format(img1).replace("\\", "/")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         text = rst2html(content,  # fLOG=fLOG,
                         writer="doctree", keep_warnings=False, layout='sphinx',
diff --git a/_unittests/ut_sphinxext/test_downloadlink_extension.py b/_unittests/ut_sphinxext/test_downloadlink_extension.py
index 3c3d677f..9826f364 100644
--- a/_unittests/ut_sphinxext/test_downloadlink_extension.py
+++ b/_unittests/ut_sphinxext/test_downloadlink_extension.py
@@ -2,13 +2,10 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
 import warnings
 import sphinx
-
 from pyquickhelper.pycode import get_temp_folder, ExtTestCase
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.sphinxext import process_downloadlink_role
diff --git a/_unittests/ut_sphinxext/test_epkg_extension.py b/_unittests/ut_sphinxext/test_epkg_extension.py
index 20a18b37..74a00e09 100644
--- a/_unittests/ut_sphinxext/test_epkg_extension.py
+++ b/_unittests/ut_sphinxext/test_epkg_extension.py
@@ -2,18 +2,15 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
 import warnings
-
-from pyquickhelper.pycode import get_temp_folder
+from pyquickhelper.pycode import get_temp_folder, ExtTestCase
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.cli.cli_helper import clean_documentation_for_cli
 
 
-class TestEpkgExtension(unittest.TestCase):
+class TestEpkgExtension(ExtTestCase):
 
     def test_epkg_module(self):
         from docutils import nodes as skip_
@@ -24,8 +21,7 @@ def test_epkg_module(self):
 
                     abeforea :epkg:`pandas` aaftera
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         html = rst2html(content, writer="custom", keep_warnings=True,
                         directives=None, layout="sphinx",
@@ -56,8 +52,7 @@ def test_epkg_module_twice(self):
 
                     abeforea :epkg:`pandas` aaftera
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         html = rst2html(content, writer="custom", keep_warnings=True,
                         directives=None, layout="sphinx",
@@ -76,8 +71,7 @@ def test_epkg_sub(self):
 
                     7za :epkg:`7z` 7zb
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         html = rst2html(content, writer="custom", keep_warnings=True,
                         directives=None, layout="sphinx",
@@ -122,8 +116,7 @@ def test_epkg_function(self):
 
                     7za :epkg:`7z` 7zb
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         def pandas_link(input):
             return "MYA", "|".join(input.split(":"))
@@ -172,8 +165,7 @@ def test_epkg_class(self):
 
                     7za :epkg:`7z` 7zb
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         class pandas_link:
             def __call__(self, input):
@@ -223,8 +215,7 @@ def test_epkg_function_string(self):
 
                     7za :epkg:`7z` 7zb
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         html = rst2html(content, writer="custom", keep_warnings=True,
                         directives=None, layout="sphinx",
@@ -269,8 +260,7 @@ def test_epkg_function_long_link(self):
                     `one link on two lines <http://first.part/
                     second part>`_.
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         html = rst2html(content,
                         writer="custom", keep_warnings=True,
diff --git a/_unittests/ut_sphinxext/test_exref_extension.py b/_unittests/ut_sphinxext/test_exref_extension.py
index 5857a2e2..146dad31 100644
--- a/_unittests/ut_sphinxext/test_exref_extension.py
+++ b/_unittests/ut_sphinxext/test_exref_extension.py
@@ -2,35 +2,23 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-import sys
 import os
 import unittest
 from docutils.parsers.rst import directives
-
-from pyquickhelper.loghelper.flog import fLOG
 from pyquickhelper.pycode import get_temp_folder, ExtTestCase
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.sphinxext import ExRef, ExRefList
-from pyquickhelper.sphinxext.sphinx_exref_extension import exref_node, visit_exref_node, depart_exref_node
+from pyquickhelper.sphinxext.sphinx_exref_extension import (
+    exref_node, visit_exref_node, depart_exref_node)
 
 
 class TestExRefExtension(ExtTestCase):
 
     def test_post_parse_exref(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         directives.register_directive("exref", ExRef)
         directives.register_directive("exreflist", ExRefList)
 
     def test_exref(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -48,8 +36,7 @@ def test_exref(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("exref", ExRef, exref_node,
                   visit_exref_node, depart_exref_node)]
@@ -75,11 +62,6 @@ def test_exref(self):
             raise Exception(html)
 
     def test_exreflist(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -103,8 +85,7 @@ def test_exreflist(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("exref", ExRef, exref_node,
                   visit_exref_node, depart_exref_node)]
@@ -132,11 +113,6 @@ def test_exreflist(self):
             raise Exception(html)
 
     def test_exreflist_rst(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -160,8 +136,7 @@ def test_exreflist_rst(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("exref", ExRef, exref_node,
                   visit_exref_node, depart_exref_node)]
diff --git a/_unittests/ut_sphinxext/test_ext_helper.py b/_unittests/ut_sphinxext/test_ext_helper.py
index 42b6b81f..16e47b0d 100644
--- a/_unittests/ut_sphinxext/test_ext_helper.py
+++ b/_unittests/ut_sphinxext/test_ext_helper.py
@@ -1,11 +1,9 @@
 """
 @brief      test log(time=3s)
 """
-import sys
 import os
 import unittest
 from docutils.parsers.rst import directives
-
 from pyquickhelper.pycode import get_temp_folder, ExtTestCase
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.sphinxext.sphinx_ext_helper import get_index
diff --git a/_unittests/ut_sphinxext/test_faqref_extension.py b/_unittests/ut_sphinxext/test_faqref_extension.py
index a7d23dfe..850e2213 100644
--- a/_unittests/ut_sphinxext/test_faqref_extension.py
+++ b/_unittests/ut_sphinxext/test_faqref_extension.py
@@ -2,36 +2,26 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
 from docutils.parsers.rst import directives
-
 from pyquickhelper.loghelper.flog import fLOG
-from pyquickhelper.pycode import get_temp_folder
+from pyquickhelper.pycode import get_temp_folder, ExtTestCase, ignore_warnings
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.sphinxext import FaqRef, FaqRefList
-from pyquickhelper.sphinxext.sphinx_faqref_extension import faqref_node, visit_faqref_node, depart_faqref_node
+from pyquickhelper.sphinxext.sphinx_faqref_extension import (
+    faqref_node, visit_faqref_node, depart_faqref_node)
 
 
-class TestFaqRefExtension(unittest.TestCase):
+class TestFaqRefExtension(ExtTestCase):
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_post_parse_faqref(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         directives.register_directive("faqref", FaqRef)
         directives.register_directive("faqreflist", FaqRefList)
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_faqref(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -49,8 +39,7 @@ def test_faqref(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("faqref", FaqRef, faqref_node,
                   visit_faqref_node, depart_faqref_node)]
@@ -75,12 +64,8 @@ def test_faqref(self):
         if t1 not in html:
             raise Exception(html)
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_faqreflist(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -104,8 +89,7 @@ def test_faqreflist(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("faqref", FaqRef, faqref_node,
                   visit_faqref_node, depart_faqref_node)]
diff --git a/_unittests/ut_sphinxext/test_gdot_extension.py b/_unittests/ut_sphinxext/test_gdot_extension.py
index c2d1cd53..6ca9f48a 100644
--- a/_unittests/ut_sphinxext/test_gdot_extension.py
+++ b/_unittests/ut_sphinxext/test_gdot_extension.py
@@ -2,13 +2,10 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
 import logging
 from docutils.parsers.rst import directives
-
 from pyquickhelper.pycode import get_temp_folder, ExtTestCase
 from pyquickhelper.helpgen import rst2html
 
diff --git a/_unittests/ut_sphinxext/test_githublink_extension.py b/_unittests/ut_sphinxext/test_githublink_extension.py
index c679eae4..095560b0 100644
--- a/_unittests/ut_sphinxext/test_githublink_extension.py
+++ b/_unittests/ut_sphinxext/test_githublink_extension.py
@@ -2,36 +2,21 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
 import warnings
-
-from pyquickhelper.loghelper.flog import fLOG
-from pyquickhelper.pycode import get_temp_folder
+from pyquickhelper.pycode import get_temp_folder, ExtTestCase
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.sphinxext import githublink_role
 from docutils.parsers.rst.roles import register_canonical_role
 
 
-class TestGitHubLinkExtension(unittest.TestCase):
+class TestGitHubLinkExtension(ExtTestCase):
 
     def test_post_parse_sn(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         register_canonical_role("githublink", githublink_role)
 
-    @unittest.skipIf(sys.version_info[0] < 3, "does not work on Python 2")
     def test_githublink(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -64,8 +49,7 @@ def test_githublink(self):
 
                     this code shoud appear
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         html = rst2html(content,  # fLOG=fLOG,
                         writer="custom", keep_warnings=True,
@@ -108,13 +92,7 @@ def test_githublink(self):
         with open(os.path.join(temp, "out_githublink.html"), "w", encoding="utf8") as f:
             f.write(html)
 
-    @unittest.skipIf(sys.version_info[0] < 3, "does not work on Python 2")
     def test_githublink_function(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -143,8 +121,7 @@ def test_githublink_function(self):
 
                     this code shoud appear
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         def processor(path, lineno):
             return f"[{path}:{lineno}]", "my_sources"
@@ -187,13 +164,7 @@ def processor(path, lineno):
         with open(os.path.join(temp, "out_githublink.html"), "w", encoding="utf8") as f:
             f.write(html)
 
-    @unittest.skipIf(sys.version_info[0] < 3, "does not work on Python 2")
     def test_githublink_doc(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -206,8 +177,7 @@ def test_githublink_doc(self):
 
                     this code shoud appear
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         html = rst2html(content,  # fLOG=fLOG,
                         writer="custom", keep_warnings=True,
@@ -230,13 +200,7 @@ def test_githublink_doc(self):
         with open(os.path.join(temp, "out_githublink.html"), "w", encoding="utf8") as f:
             f.write(html)
 
-    @unittest.skipIf(sys.version_info[0] < 3, "does not work on Python 2")
     def test_githublink_binaries(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -255,8 +219,7 @@ def test_githublink_binaries(self):
 
                     this code shoud appear
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         html = rst2html(content,  # fLOG=fLOG,
                         writer="custom", keep_warnings=True,
diff --git a/_unittests/ut_sphinxext/test_gitlog_extension.py b/_unittests/ut_sphinxext/test_gitlog_extension.py
index 830d76a5..eb91c79d 100644
--- a/_unittests/ut_sphinxext/test_gitlog_extension.py
+++ b/_unittests/ut_sphinxext/test_gitlog_extension.py
@@ -2,36 +2,22 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
 import warnings
 from datetime import datetime
-
-from pyquickhelper.loghelper.flog import fLOG
-from pyquickhelper.pycode import get_temp_folder
+from pyquickhelper.pycode import get_temp_folder, ExtTestCase
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.sphinxext import gitlog_role
 from docutils.parsers.rst.roles import register_canonical_role
 
 
-class TestGitlogExtension(unittest.TestCase):
+class TestGitlogExtension(ExtTestCase):
 
     def test_post_parse_sn(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         register_canonical_role("gitlog", gitlog_role)
 
     def test_gitlog(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -46,8 +32,7 @@ def test_gitlog(self):
 
                     this code shoud appear
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         html = rst2html(content,  # fLOG=fLOG,
                         writer="html", keep_warnings=True,
@@ -70,11 +55,6 @@ def test_gitlog(self):
             f.write(html)
 
     def test_gitlog_inline(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
diff --git a/_unittests/ut_sphinxext/test_image_extension.py b/_unittests/ut_sphinxext/test_image_extension.py
index 2607c902..a9bbb042 100644
--- a/_unittests/ut_sphinxext/test_image_extension.py
+++ b/_unittests/ut_sphinxext/test_image_extension.py
@@ -2,15 +2,12 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-import sys
 import os
 import logging
 import unittest
 import warnings
 from io import StringIO
 from docutils.parsers.rst import directives
-
-from pyquickhelper.loghelper.flog import fLOG
 from pyquickhelper.pycode import get_temp_folder, ExtTestCase
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.helpgen.sphinxm_custom_app import CustomSphinxApp
@@ -24,19 +21,9 @@ def setUp(self):
         logger.disabled = True
 
     def test_post_parse_sn(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         directives.register_directive("image", ImageDirective)
 
     def test_image(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -54,8 +41,7 @@ def test_image(self):
 
                     this code shoud appear
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         logger2 = logging.getLogger("video")
 
@@ -93,11 +79,6 @@ def test_image(self):
             f.write(html)
 
     def test_sphinx_ext_image_html(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         temp = get_temp_folder(__file__, "temp_sphinx_ext_image_html")
         src_ = os.path.join(temp, "..", "data", "image")
 
diff --git a/_unittests/ut_sphinxext/test_import_any_object.py b/_unittests/ut_sphinxext/test_import_any_object.py
index 6cdb2c2e..d3870f6b 100644
--- a/_unittests/ut_sphinxext/test_import_any_object.py
+++ b/_unittests/ut_sphinxext/test_import_any_object.py
@@ -2,16 +2,16 @@
 @brief      test log(time=8s)
 @author     Xavier Dupre
 """
-
 import sys
 import os
 import unittest
-
-from pyquickhelper.sphinxext.import_object_helper import import_any_object, import_object
+from pyquickhelper.sphinxext.import_object_helper import (
+    import_any_object, import_object)
+from pyquickhelper.pycode import ExtTestCase
 from pyquickhelper.loghelper import sys_path_append
 
 
-class TestImportAnyObject(unittest.TestCase):
+class TestImportAnyObject(ExtTestCase):
 
     def test_import_any_object(self):
         this = os.path.abspath(os.path.dirname(__file__))
diff --git a/_unittests/ut_sphinxext/test_latex_builder.py b/_unittests/ut_sphinxext/test_latex_builder.py
index 4150c049..fa77285a 100644
--- a/_unittests/ut_sphinxext/test_latex_builder.py
+++ b/_unittests/ut_sphinxext/test_latex_builder.py
@@ -2,11 +2,8 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
-
 from pyquickhelper.pycode import get_temp_folder, ExtTestCase
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.sphinxext import CmdRef
@@ -94,8 +91,7 @@ def test_latex_builder_sphinx(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("cmdref", CmdRef, cmdref_node,
                   visit_cmdref_node, depart_cmdref_node)]
@@ -152,8 +148,7 @@ def test_latex_builder_sphinx_table(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("cmdref", CmdRef, cmdref_node,
                   visit_cmdref_node, depart_cmdref_node)]
@@ -195,8 +190,7 @@ def test_latex_only(self):
                         only for md
 
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("cmdref", CmdRef, cmdref_node,
                   visit_cmdref_node, depart_cmdref_node)]
@@ -242,8 +236,7 @@ def test_latex_reference(self):
 
                     :py:class:`Renamed <pyquickhelper.sphinxext.sphinx_latex_builder.EnhancedLaTeXBuilder>`
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("cmdref", CmdRef, cmdref_node,
                   visit_cmdref_node, depart_cmdref_node)]
@@ -308,8 +301,7 @@ def test_latex_reference2(self):
                         jjjj
 
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         text = rst2html(content,  # fLOG=fLOG,
                         writer="elatex", keep_warnings=False, layout='sphinx',
@@ -344,8 +336,7 @@ def test_latex_title(self):
                     ******
 
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         text = rst2html(content,  # fLOG=fLOG,
                         writer="elatex", keep_warnings=False, layout='sphinx',
@@ -374,8 +365,7 @@ def test_latex_image(self):
                         :width: 59
                         :alt: alternative2
                     """.replace("                    ", "").format(img1, img2).replace("\\", "/")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         text = rst2html(content,  # fLOG=fLOG,
                         writer="elatex", keep_warnings=False, layout='sphinx',
@@ -406,8 +396,7 @@ def test_latex_image_overwrite(self):
                         :width: 59
                         :alt: alternative2
                     """.replace("                    ", "").format(img1, img2).replace("\\", "/")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         text = rst2html(content,  # fLOG=fLOG,
                         writer="elatex", keep_warnings=False, layout='sphinx',
diff --git a/_unittests/ut_sphinxext/test_mathdef_extension.py b/_unittests/ut_sphinxext/test_mathdef_extension.py
index d97b3baf..1fe6af3a 100644
--- a/_unittests/ut_sphinxext/test_mathdef_extension.py
+++ b/_unittests/ut_sphinxext/test_mathdef_extension.py
@@ -2,36 +2,25 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
 from docutils.parsers.rst import directives
-
-from pyquickhelper.loghelper.flog import fLOG
-from pyquickhelper.pycode import get_temp_folder
+from pyquickhelper.pycode import get_temp_folder, ignore_warnings
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.sphinxext import MathDef, MathDefList
-from pyquickhelper.sphinxext.sphinx_mathdef_extension import mathdef_node, visit_mathdef_node, depart_mathdef_node
+from pyquickhelper.sphinxext.sphinx_mathdef_extension import (
+    mathdef_node, visit_mathdef_node, depart_mathdef_node)
 
 
 class TestMathDefExtension(unittest.TestCase):
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_post_parse_sn_todoext(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         directives.register_directive("mathdef", MathDef)
         directives.register_directive("mathdeflist", MathDefList)
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_mathdef(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -49,8 +38,7 @@ def test_mathdef(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("mathdef", MathDef, mathdef_node,
                   visit_mathdef_node, depart_mathdef_node)]
@@ -75,12 +63,8 @@ def test_mathdef(self):
         if t1 not in html:
             raise Exception(html)
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_mathdeflist(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -102,8 +86,7 @@ def test_mathdeflist(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("mathdef", MathDef, mathdef_node,
                   visit_mathdef_node, depart_mathdef_node)]
@@ -128,12 +111,8 @@ def test_mathdeflist(self):
         if t1 not in html:
             raise Exception(html)
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_mathdeflist_contents(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -156,8 +135,7 @@ def test_mathdeflist_contents(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("mathdef", MathDef, mathdef_node,
                   visit_mathdef_node, depart_mathdef_node)]
@@ -182,12 +160,8 @@ def test_mathdeflist_contents(self):
         if t1 not in html:
             raise Exception(html)
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_mathdeflist_contents_body_sphinx(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -216,8 +190,7 @@ def test_mathdeflist_contents_body_sphinx(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("mathdef", MathDef, mathdef_node,
                   visit_mathdef_node, depart_mathdef_node)]
diff --git a/_unittests/ut_sphinxext/test_md_builder.py b/_unittests/ut_sphinxext/test_md_builder.py
index d912bf06..64d81d37 100644
--- a/_unittests/ut_sphinxext/test_md_builder.py
+++ b/_unittests/ut_sphinxext/test_md_builder.py
@@ -2,19 +2,18 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
-
-from pyquickhelper.pycode import get_temp_folder, ExtTestCase
+from pyquickhelper.pycode import get_temp_folder, ExtTestCase, ignore_warnings
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.sphinxext import CmdRef
-from pyquickhelper.sphinxext.sphinx_cmdref_extension import cmdref_node, visit_cmdref_node, depart_cmdref_node
+from pyquickhelper.sphinxext.sphinx_cmdref_extension import (
+    cmdref_node, visit_cmdref_node, depart_cmdref_node)
 
 
 class TestMdBuilder(ExtTestCase):
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_md_builder(self):
         from docutils import nodes as skip_
 
@@ -34,8 +33,7 @@ def test_md_builder(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("cmdref", CmdRef, cmdref_node,
                   visit_cmdref_node, depart_cmdref_node)]
@@ -79,6 +77,7 @@ def test_md_builder(self):
         if t1 in html:
             raise Exception(html)
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_md_builder_sphinx(self):
         from docutils import nodes as skip_
 
@@ -104,8 +103,7 @@ def test_md_builder_sphinx(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("cmdref", CmdRef, cmdref_node,
                   visit_cmdref_node, depart_cmdref_node)]
@@ -138,6 +136,7 @@ def test_md_builder_sphinx(self):
         if t1 not in html:
             raise Exception(html)
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_md_builder_sphinx_table(self):
         from docutils import nodes as skip_
 
@@ -166,8 +165,7 @@ def test_md_builder_sphinx_table(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("cmdref", CmdRef, cmdref_node,
                   visit_cmdref_node, depart_cmdref_node)]
@@ -196,6 +194,7 @@ def test_md_builder_sphinx_table(self):
         if len(spl) > 2:
             raise Exception(html)
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_md_only(self):
         from docutils import nodes as skip_
 
@@ -212,8 +211,7 @@ def test_md_only(self):
                         only for md
 
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("cmdref", CmdRef, cmdref_node,
                   visit_cmdref_node, depart_cmdref_node)]
@@ -248,6 +246,7 @@ def test_md_only(self):
         if t1 not in text:
             raise Exception(text)
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_md_reference(self):
         from docutils import nodes as skip_
 
@@ -259,8 +258,7 @@ def test_md_reference(self):
 
                     :py:class:`Renamed <pyquickhelper.sphinxext.sphinx_md_builder.MdBuilder>`
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("cmdref", CmdRef, cmdref_node,
                   visit_cmdref_node, depart_cmdref_node)]
@@ -280,6 +278,7 @@ def test_md_reference(self):
         if t1 not in text:
             raise Exception(text)
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_md_reference2(self):
         from docutils import nodes as skip_
 
@@ -322,8 +321,7 @@ def test_md_reference2(self):
                         jjjj
 
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         text = rst2html(content,  # fLOG=fLOG,
                         writer="md", keep_warnings=False, layout='sphinx',
@@ -340,6 +338,7 @@ def test_md_reference2(self):
         with open(os.path.join(temp, "out_cmdref.md"), "w", encoding="utf8") as f:
             f.write(text)
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_md_title(self):
         from docutils import nodes as skip_
 
@@ -358,8 +357,7 @@ def test_md_title(self):
                     ******
 
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         text = rst2html(content,  # fLOG=fLOG,
                         writer="md", keep_warnings=False, layout='sphinx',
@@ -373,6 +371,7 @@ def test_md_title(self):
         with open(os.path.join(temp, "out_md_title.md"), "w", encoding="utf8") as f:
             f.write(text)
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_md_image(self):
 
         temp = get_temp_folder(__file__, "temp_md_image")
@@ -388,8 +387,7 @@ def test_md_image(self):
                         :width: 200
                         :alt: alternative2
                     """.replace("                    ", "").format(img1, img2).replace("\\", "/")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         text = rst2html(content,  # fLOG=fLOG,
                         writer="md", keep_warnings=False, layout='sphinx',
@@ -406,6 +404,7 @@ def test_md_image(self):
         with open(os.path.join(temp, "md_image.md"), "w", encoding="utf8") as f:
             f.write(text)
 
+    @ignore_warnings(PendingDeprecationWarning)
     def test_md_image_target(self):
 
         temp = get_temp_folder(__file__, "temp_md_image_target")
@@ -417,8 +416,7 @@ def test_md_image_target(self):
                         :width: 200
                         :alt: alternative1
                     """.replace("                    ", "").format(img1).replace("\\", "/")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         text = rst2html(content,  # fLOG=fLOG,
                         writer="md", keep_warnings=False, layout='sphinx',
diff --git a/_unittests/ut_sphinxext/test_nbref_extension.py b/_unittests/ut_sphinxext/test_nbref_extension.py
index bb295b76..75f562b3 100644
--- a/_unittests/ut_sphinxext/test_nbref_extension.py
+++ b/_unittests/ut_sphinxext/test_nbref_extension.py
@@ -2,36 +2,23 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
 from docutils.parsers.rst import directives
-
-from pyquickhelper.loghelper.flog import fLOG
-from pyquickhelper.pycode import get_temp_folder
+from pyquickhelper.pycode import get_temp_folder, ExtTestCase
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.sphinxext import NbRef, NbRefList
-from pyquickhelper.sphinxext.sphinx_nbref_extension import nbref_node, visit_nbref_node, depart_nbref_node
+from pyquickhelper.sphinxext.sphinx_nbref_extension import (
+    nbref_node, visit_nbref_node, depart_nbref_node)
 
 
-class TestNbRefExtension(unittest.TestCase):
+class TestNbRefExtension(ExtTestCase):
 
     def test_post_parse_nbref(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         directives.register_directive("nbref", NbRef)
         directives.register_directive("nbreflist", NbRefList)
 
     def test_nbref(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -49,8 +36,7 @@ def test_nbref(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("nbref", NbRef, nbref_node,
                   visit_nbref_node, depart_nbref_node)]
@@ -76,11 +62,6 @@ def test_nbref(self):
             raise Exception(html)
 
     def test_nbreflist(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -104,8 +85,7 @@ def test_nbreflist(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("nbref", NbRef, nbref_node,
                   visit_nbref_node, depart_nbref_node)]
diff --git a/_unittests/ut_sphinxext/test_postcontents_extension.py b/_unittests/ut_sphinxext/test_postcontents_extension.py
index 2d95141a..ffb93a7e 100644
--- a/_unittests/ut_sphinxext/test_postcontents_extension.py
+++ b/_unittests/ut_sphinxext/test_postcontents_extension.py
@@ -2,21 +2,17 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
 import warnings
 from docutils.parsers.rst import directives
-
-from pyquickhelper.loghelper.flog import fLOG
-from pyquickhelper.pycode import get_temp_folder
+from pyquickhelper.pycode import get_temp_folder, ExtTestCase
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.sphinxext import RunPythonDirective
 from pyquickhelper.sphinxext import PostContentsDirective
 
 
-class TestPostContentsExtension(unittest.TestCase):
+class TestPostContentsExtension(ExtTestCase):
 
     content = """
                     Contents:
@@ -42,11 +38,6 @@ class TestPostContentsExtension(unittest.TestCase):
                     """.replace("                    ", "")
 
     def test_post_parse(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         directives.register_directive("runpython", RunPythonDirective)
         directives.register_directive("postcontents", PostContentsDirective)
 
@@ -54,11 +45,6 @@ def test_contents(self):
         """
         this test also test the extension runpython
         """
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         content = TestPostContentsExtension.content
 
         rst = rst2html(content,  # fLOG=fLOG,
@@ -74,11 +60,6 @@ def test_postcontents(self):
         """
         this test also test the extension runpython
         """
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         content = TestPostContentsExtension.content.replace(
             "contents", "postcontents")
 
diff --git a/_unittests/ut_sphinxext/test_quote_extension.py b/_unittests/ut_sphinxext/test_quote_extension.py
index 3b0f54ab..49521460 100644
--- a/_unittests/ut_sphinxext/test_quote_extension.py
+++ b/_unittests/ut_sphinxext/test_quote_extension.py
@@ -2,20 +2,17 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
 from docutils.parsers.rst import directives
-
-from pyquickhelper.pycode import get_temp_folder
+from pyquickhelper.pycode import get_temp_folder, ExtTestCase
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.sphinxext import QuoteNode
 from pyquickhelper.sphinxext.sphinx_quote_extension import quote_node, visit_quote_node, depart_quote_node
 from pyquickhelper.sphinxext.sphinx_quote_extension import visit_quote_node_rst, depart_quote_node_rst
 
 
-class TestMathDefExtension(unittest.TestCase):
+class TestMathDefExtension(ExtTestCase):
 
     def test_post_parse_sn_todoext(self):
         directives.register_directive("quote", QuoteNode)
@@ -35,8 +32,7 @@ def test_quote(self):
 
                     next
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("quote", QuoteNode, quote_node,
                   visit_quote_node, depart_quote_node)]
@@ -98,8 +94,7 @@ def test_quote_manga(self):
 
                     next
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("quote", QuoteNode, quote_node,
                   visit_quote_node, depart_quote_node)]
@@ -161,8 +156,7 @@ def test_quote_film(self):
 
                     next
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("quote", QuoteNode, quote_node,
                   visit_quote_node, depart_quote_node)]
@@ -225,8 +219,7 @@ def test_quote_show(self):
 
                     next
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("quote", QuoteNode, quote_node,
                   visit_quote_node, depart_quote_node)]
@@ -289,8 +282,7 @@ def test_quote_comic(self):
 
                     next
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("quote", QuoteNode, quote_node,
                   visit_quote_node, depart_quote_node)]
@@ -353,8 +345,7 @@ def test_quote_disc(self):
 
                     next
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("quote", QuoteNode, quote_node,
                   visit_quote_node, depart_quote_node)]
@@ -417,8 +408,7 @@ def test_quote_ado(self):
 
                     next
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("quote", QuoteNode, quote_node,
                   visit_quote_node, depart_quote_node)]
@@ -481,8 +471,7 @@ def test_quote_child(self):
 
                     next
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("quote", QuoteNode, quote_node,
                   visit_quote_node, depart_quote_node)]
diff --git a/_unittests/ut_sphinxext/test_revealsjs_directives.py b/_unittests/ut_sphinxext/test_revealsjs_directives.py
index fd55c7f8..77ed5d7e 100644
--- a/_unittests/ut_sphinxext/test_revealsjs_directives.py
+++ b/_unittests/ut_sphinxext/test_revealsjs_directives.py
@@ -2,27 +2,17 @@
 @brief      test log(time=2s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
-
-from pyquickhelper.sphinxext.revealjs.directives import heading
-from pyquickhelper.sphinxext.revealjs.directives import RevealjsDirective
-from pyquickhelper.sphinxext.revealjs.directives import RvNoteDirective
-from pyquickhelper.sphinxext.revealjs.directives import RvSmallDirective
-from pyquickhelper.sphinxext.revealjs.directives import RvCodeDirective
-from pyquickhelper.sphinxext.revealjs.directives import visit_revealjs
-from pyquickhelper.sphinxext.revealjs import compat
-from pyquickhelper.sphinxext.revealjs.directives import depart_revealjs
-from pyquickhelper.sphinxext.revealjs.directives import visit_rv_code
-from pyquickhelper.sphinxext.revealjs.directives import depart_rv_code
-from pyquickhelper.sphinxext.revealjs.directives import visit_rv_small
-from pyquickhelper.sphinxext.revealjs.directives import depart_rv_small
-from pyquickhelper.sphinxext.revealjs.directives import visit_rv_note
-from pyquickhelper.sphinxext.revealjs.directives import depart_rv_note
-from pyquickhelper.sphinxext.revealjs.directives import setup
+from pyquickhelper.pycode import ExtTestCase
+from pyquickhelper.sphinxext.revealjs.directives import (
+    heading, RevealjsDirective, RvNoteDirective, RvSmallDirective,
+    RvCodeDirective, visit_revealjs, depart_revealjs,
+    visit_rv_code, depart_rv_code, visit_rv_small,
+    depart_rv_small, visit_rv_note, depart_rv_note,
+    setup)
 from pyquickhelper.sphinxext.revealjs import directives as d
+from pyquickhelper.sphinxext.revealjs import compat
 
 
 class DummyConfig(object):
@@ -42,7 +32,7 @@ def warning(self, msg, line):
         return dict(msg=msg, line=line)
 
 
-class TestHeading(unittest.TestCase):
+class TestHeading(ExtTestCase):
 
     def _get_target(self):
         return heading
@@ -66,7 +56,7 @@ def test_value_error(self):
             pass
 
 
-class TestRevealjsDirective(unittest.TestCase):
+class TestRevealjsDirective(ExtTestCase):
 
     def _get_target_class(self):
         return RevealjsDirective
@@ -80,6 +70,10 @@ def _get_dummy_config(self, **kwargs):
         return DummyConfig(**config)
 
     def _get_params(self, **kwargs):
+        from docutils.statemachine import State, StateMachine
+        stm = StateMachine([], None)
+        stm.reporter = None
+        st = State(stm)
         params = dict(
             name='dummyname',
             arguments=['tell-k', 'test'],
@@ -88,8 +82,8 @@ def _get_params(self, **kwargs):
             lineno=1,
             content_offset=1,
             block_text="",
-            state="",
-            state_machine="",
+            state=st,
+            state_machine=stm,
         )
         params.update(kwargs)
         return params
@@ -129,7 +123,7 @@ def test_other_options(self):
         self.assertEqual("title-heading", nodes[0]['title-heading'])
 
 
-class TestRvSmallDirective(unittest.TestCase):
+class TestRvSmallDirective(ExtTestCase):
 
     def _get_target_class(self):
         return RvSmallDirective
@@ -143,6 +137,10 @@ def _get_dummy_config(self, **kwargs):
         return DummyConfig(**config)
 
     def _get_params(self, **kwargs):
+        from docutils.statemachine import State, StateMachine
+        stm = StateMachine([], None)
+        stm.reporter = None
+        st = State(stm)
         params = dict(
             name='dummyname',
             arguments='',
@@ -151,8 +149,8 @@ def _get_params(self, **kwargs):
             lineno=1,
             content_offset=1,
             block_text="",
-            state="",
-            state_machine="",
+            state=st,
+            state_machine=stm,
         )
         params.update(kwargs)
         return params
@@ -174,7 +172,7 @@ def test_class_option(self):
         self.assertEqual('add-class', nodes[0]['classes'])
 
 
-class TestRvNoteDirective(unittest.TestCase):
+class TestRvNoteDirective(ExtTestCase):
 
     def _get_target_class(self):
         return RvNoteDirective
@@ -188,6 +186,10 @@ def _get_dummy_config(self, **kwargs):
         return DummyConfig(**config)
 
     def _get_params(self, **kwargs):
+        from docutils.statemachine import State, StateMachine
+        stm = StateMachine([], None)
+        stm.reporter = None
+        st = State(stm)
         params = dict(
             name='dummyname',
             arguments='',
@@ -196,8 +198,8 @@ def _get_params(self, **kwargs):
             lineno=1,
             content_offset=1,
             block_text="",
-            state="",
-            state_machine="",
+            state=st,
+            state_machine=stm,
         )
         params.update(kwargs)
         return params
@@ -219,7 +221,7 @@ def test_class_option(self):
         assert 'add-class' == nodes[0]['classes']
 
 
-class TestRvCodeDirective(unittest.TestCase):
+class TestRvCodeDirective(ExtTestCase):
 
     def _get_target_class(self):
         return RvCodeDirective
@@ -233,6 +235,10 @@ def _get_dummy_config(self, **kwargs):
         return DummyConfig(**config)
 
     def _get_params(self, **kwargs):
+        from docutils.statemachine import State, StateMachine
+        stm = StateMachine([], None)
+        stm.reporter = None
+        st = State(stm)
         params = dict(
             name='dummyname',
             arguments='',
@@ -241,8 +247,8 @@ def _get_params(self, **kwargs):
             lineno=1,
             content_offset=1,
             block_text="",
-            state="",
-            state_machine="",
+            state=st,
+            state_machine=stm,
         )
         params.update(kwargs)
         return params
@@ -255,7 +261,7 @@ def test_it(self):
         assert 1 == len(nodes)
 
 
-class TestVisitRevealjs(unittest.TestCase):
+class TestVisitRevealjs(ExtTestCase):
 
     def _get_target(self):
         return visit_revealjs
@@ -355,7 +361,7 @@ def test_markdown(self):
         ], dummyself.body.content)
 
 
-class TestDepartRevealjs(unittest.TestCase):
+class TestDepartRevealjs(ExtTestCase):
 
     def _get_target(self):
         return depart_revealjs
@@ -381,7 +387,7 @@ def test_it(self):
         assert '</section>\n' == dummyself.body.content[0]
 
 
-class TestVisitRvCode(unittest.TestCase):
+class TestVisitRvCode(ExtTestCase):
 
     def _get_target(self):
         return visit_rv_code
@@ -425,7 +431,7 @@ def test_it(self):
         assert 'rawsource' == dummyself.body.content[2]
 
 
-class TestDepartRvCode(unittest.TestCase):
+class TestDepartRvCode(ExtTestCase):
 
     def _get_target(self):
         return depart_rv_code
@@ -453,7 +459,7 @@ def test_it(self):
         self.assertEqual('</pre>\n', dummyself.body.content[1])
 
 
-class TestVisitRvSmall(unittest.TestCase):
+class TestVisitRvSmall(ExtTestCase):
 
     def _get_target(self):
         return visit_rv_small
@@ -496,7 +502,7 @@ def test_it(self):
         assert True is dummyself.first_last
 
 
-class TestDepartRvSmall(unittest.TestCase):
+class TestDepartRvSmall(ExtTestCase):
 
     def _get_target(self):
         return depart_rv_small
@@ -523,7 +529,7 @@ def test_it(self):
         assert '</small>\n' == dummyself.body.content[0]
 
 
-class TestVisitRvNote(unittest.TestCase):
+class TestVisitRvNote(ExtTestCase):
 
     def _get_target(self):
         return visit_rv_note
@@ -567,7 +573,7 @@ def test_it(self):
         assert True is dummyself.first_last
 
 
-class TestDepartRvNote(unittest.TestCase):
+class TestDepartRvNote(ExtTestCase):
 
     def _get_target(self):
         return depart_rv_note
@@ -594,7 +600,7 @@ def test_it(self):
         self.assertEqual('</aside>\n', dummyself.body.content[0])
 
 
-class TestSetup(unittest.TestCase):
+class TestSetup(ExtTestCase):
 
     def _get_target(self):
         return setup
diff --git a/_unittests/ut_sphinxext/test_rst_builder.py b/_unittests/ut_sphinxext/test_rst_builder.py
index 45f3f203..7e858484 100644
--- a/_unittests/ut_sphinxext/test_rst_builder.py
+++ b/_unittests/ut_sphinxext/test_rst_builder.py
@@ -4,11 +4,11 @@
 """
 import os
 import unittest
-import sys
 from pyquickhelper.pycode import get_temp_folder, ExtTestCase
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.sphinxext import CmdRef
-from pyquickhelper.sphinxext.sphinx_cmdref_extension import cmdref_node, visit_cmdref_node, depart_cmdref_node
+from pyquickhelper.sphinxext.sphinx_cmdref_extension import (
+    cmdref_node, visit_cmdref_node, depart_cmdref_node)
 from pyquickhelper.sphinxext.sphinximages.sphinxtrib.images import ImageDirective
 
 
@@ -33,8 +33,7 @@ def test_rst_builder(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("cmdref", CmdRef, cmdref_node,
                   visit_cmdref_node, depart_cmdref_node)]
@@ -99,8 +98,7 @@ def test_rst_builder_sphinx(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("cmdref", CmdRef, cmdref_node,
                   visit_cmdref_node, depart_cmdref_node)]
@@ -161,8 +159,7 @@ def test_rst_builder_sphinx_table(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("cmdref", CmdRef, cmdref_node,
                   visit_cmdref_node, depart_cmdref_node)]
@@ -203,8 +200,7 @@ def test_rst_only(self):
                         only for rst
 
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("cmdref", CmdRef, cmdref_node,
                   visit_cmdref_node, depart_cmdref_node)]
@@ -250,8 +246,7 @@ def test_rst_reference(self):
 
                     :py:class:`Renamed <pyquickhelper.sphinxext.sphinx_rst_builder.RstBuilder>`
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("cmdref", CmdRef, cmdref_node,
                   visit_cmdref_node, depart_cmdref_node)]
@@ -324,8 +319,7 @@ def test_rst_reference2(self):
                         jjjj
 
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         text = rst2html(content,  # fLOG=fLOG,
                         writer="rst", keep_warnings=False, layout='sphinx',
@@ -358,8 +352,7 @@ def test_rst_image(self):
                         :alt: alternative2
                         :download: True
                     """.replace("                    ", "").format(img1, img2).replace("\\", "/")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("image", ImageDirective)]
 
@@ -395,8 +388,7 @@ def test_rst_image_target(self):
                         :width: 200
                         :alt: alternative1
                     """.replace("                    ", "").format(img1).replace("\\", "/")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         text = rst2html(content,  # fLOG=fLOG,
                         writer="rst", keep_warnings=False, layout='sphinx',
@@ -420,8 +412,7 @@ def test_rst_image_target2(self):
                         :width: 200
                         :alt: alternative1
                     """.replace("                    ", "").format(img1).replace("\\", "/")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         text = rst2html(content,  # fLOG=fLOG,
                         writer="rst", keep_warnings=False, layout='sphinx',
diff --git a/_unittests/ut_sphinxext/test_runpython_code_block.py b/_unittests/ut_sphinxext/test_runpython_code_block.py
index eba11bcf..78ec98c3 100644
--- a/_unittests/ut_sphinxext/test_runpython_code_block.py
+++ b/_unittests/ut_sphinxext/test_runpython_code_block.py
@@ -2,13 +2,10 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
 import warnings
 from docutils.parsers.rst import directives
-
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.pycode import ExtTestCase
 from pyquickhelper.sphinxext.sphinx_runpython_extension import RunPythonDirective
diff --git a/_unittests/ut_sphinxext/test_runpython_context.py b/_unittests/ut_sphinxext/test_runpython_context.py
index c697c27a..9bca311c 100644
--- a/_unittests/ut_sphinxext/test_runpython_context.py
+++ b/_unittests/ut_sphinxext/test_runpython_context.py
@@ -2,13 +2,10 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
 import warnings
 from docutils.parsers.rst import directives
-
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.pycode import ExtTestCase
 from pyquickhelper.sphinxext.sphinx_runpython_extension import RunPythonDirective
diff --git a/_unittests/ut_sphinxext/test_runpython_extension.py b/_unittests/ut_sphinxext/test_runpython_extension.py
index eb18ad75..eb048bd6 100644
--- a/_unittests/ut_sphinxext/test_runpython_extension.py
+++ b/_unittests/ut_sphinxext/test_runpython_extension.py
@@ -2,38 +2,25 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-
 import sys
 import os
 import unittest
 import warnings
 from docutils.parsers.rst import directives
-
-from pyquickhelper.loghelper.flog import fLOG
-from pyquickhelper.pycode import get_temp_folder
+from pyquickhelper.pycode import get_temp_folder, ExtTestCase
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.sphinxext import RunPythonDirective
 
 
-class TestRunPythonExtension(unittest.TestCase):
+class TestRunPythonExtension(ExtTestCase):
 
     def test_post_parse(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         directives.register_directive("runpython", RunPythonDirective)
 
     def test_runpython(self):
         """
         this test also test the extension runpython
         """
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes
 
         class runpythonthis_node(nodes.Structural, nodes.Element):
@@ -64,8 +51,7 @@ def depart_rp_node(self, node):
                         import sys
                         print(u"setsysvar: " + str(sys.__dict__.get('enable_disabled_documented_pieces_of_code', None)))
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("runpythonthis", RunPythonThisDirective, runpythonthis_node,
                   visit_rp_node, depart_rp_node)]
@@ -96,11 +82,6 @@ def test_runpython_numpy(self):
         """
         this test also test the extension runpython
         """
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes
 
         if "enable_disabled_documented_pieces_of_code" in sys.__dict__:
@@ -129,11 +110,6 @@ def test_runpython_numpy_linenos(self):
         """
         this test also test the extension runpython
         """
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes
 
         if "enable_disabled_documented_pieces_of_code" in sys.__dict__:
@@ -168,11 +144,6 @@ def test_runpython_catch_warning(self):
         """
         this test also test the extension runpython
         """
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes
 
         class runpythonthis_node(nodes.Structural, nodes.Element):
@@ -203,8 +174,7 @@ def depart_rp_node(self, node):
                         import warnings
                         warnings.warn("deprecated", DeprecationWarning)
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("runpythonthis", RunPythonThisDirective, runpythonthis_node,
                   visit_rp_node, depart_rp_node)]
@@ -221,11 +191,6 @@ def test_runpython_notcatch_warning(self):
         """
         this test also test the extension runpython
         """
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes
 
         class runpythonthis_node(nodes.Structural, nodes.Element):
@@ -255,8 +220,7 @@ def depart_rp_node(self, node):
                         import warnings
                         warnings.warn("deprecated", DeprecationWarning)
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("runpythonthis", RunPythonThisDirective, runpythonthis_node,
                   visit_rp_node, depart_rp_node)]
@@ -273,11 +237,6 @@ def test_runpython_raw(self):
         """
         this test also test the extension runpython
         """
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes
 
         class runpythonthis_node(nodes.Structural, nodes.Element):
@@ -306,8 +265,7 @@ def depart_rp_node(self, node):
                         import sys
                         print(u"setsysvar: " + str(sys.__dict__.get('enable_disabled_documented_pieces_of_code', None)))
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("runpythonthis", RunPythonThisDirective, runpythonthis_node,
                   visit_rp_node, depart_rp_node)]
@@ -337,11 +295,6 @@ def test_runpython_process(self):
         """
         this test also test the extension runpython
         """
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes
 
         class runpythonthis_node(nodes.Structural, nodes.Element):
@@ -373,8 +326,7 @@ def depart_rp_node(self, node):
                         import sys
                         print(u"setsysvar: " + str(sys.__dict__.get('enable_disabled_documented_pieces_of_code', None)))
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("runpythonthis", RunPythonThisDirective, runpythonthis_node,
                   visit_rp_node, depart_rp_node)]
@@ -401,11 +353,6 @@ def depart_rp_node(self, node):
             raise Exception("this case shoud not be")
 
     def test_runpython_exception(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes
 
         class runpythonthis_node(nodes.Structural, nodes.Element):
@@ -435,8 +382,7 @@ def depart_rp_node(self, node):
                         z = 1/0
                         print(u"this one should" + u" not")
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("runpythonthis", RunPythonThisDirective, runpythonthis_node,
                   visit_rp_node, depart_rp_node)]
@@ -458,11 +404,6 @@ def depart_rp_node(self, node):
             raise Exception(html)
 
     def test_runpython_exception_assert(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes
 
         class runpythonthis_node(nodes.Structural, nodes.Element):
@@ -492,8 +433,7 @@ def depart_rp_node(self, node):
                         z = 0.5 + 0.6
                         print(u"this one should" + u" not")
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("runpythonthis", RunPythonThisDirective, runpythonthis_node,
                   visit_rp_node, depart_rp_node)]
@@ -519,8 +459,7 @@ def depart_rp_node(self, node):
 
                         z = 0.5 + 0.6
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         try:
             html = rst2html(content,  # fLOG=fLOG,
@@ -531,11 +470,6 @@ def depart_rp_node(self, node):
                 raise e
 
     def test_runpython_process_exception(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes
 
         class runpythonthis_node(nodes.Structural, nodes.Element):
@@ -567,8 +501,7 @@ def depart_rp_node(self, node):
                         z = 1/0
                         print(u"this one should" + u" not")
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("runpythonthis", RunPythonThisDirective, runpythonthis_node,
                   visit_rp_node, depart_rp_node)]
diff --git a/_unittests/ut_sphinxext/test_runpython_extension_image.py b/_unittests/ut_sphinxext/test_runpython_extension_image.py
index a590e0b4..ff0e4bc1 100644
--- a/_unittests/ut_sphinxext/test_runpython_extension_image.py
+++ b/_unittests/ut_sphinxext/test_runpython_extension_image.py
@@ -7,8 +7,6 @@
 import unittest
 import warnings
 from docutils.parsers.rst import directives
-
-from pyquickhelper.loghelper.flog import fLOG
 from pyquickhelper.pycode import get_temp_folder, ExtTestCase, skipif_azure_macosx
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.sphinxext import RunPythonDirective
@@ -17,23 +15,14 @@
 class TestRunPythonExtensionImage(ExtTestCase):
 
     def test_post_parse(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         directives.register_directive("runpython", RunPythonDirective)
 
-    @skipif_azure_macosx("Terminating app due to uncaught exception 'NSInvalidArgumentException'")
+    @skipif_azure_macosx("Terminating app due to uncaught exception "
+                         "'NSInvalidArgumentException'")
     def test_runpython_image(self):
         """
         this test also test the extension runpython
         """
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes
 
         class runpythonthis_node(nodes.Structural, nodes.Element):
@@ -71,8 +60,7 @@ def depart_rp_node(self, node):
                         print(text)
 
                     """.replace("                    ", "").replace("__FOLD__", temp.replace("\\", "/"))
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("runpythonthis", RunPythonThisDirective, runpythonthis_node,
                   visit_rp_node, depart_rp_node)]
diff --git a/_unittests/ut_sphinxext/test_runpython_extension_toggle.py b/_unittests/ut_sphinxext/test_runpython_extension_toggle.py
index 2da71f70..9a213ec9 100644
--- a/_unittests/ut_sphinxext/test_runpython_extension_toggle.py
+++ b/_unittests/ut_sphinxext/test_runpython_extension_toggle.py
@@ -2,38 +2,25 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-
 import sys
 import os
 import unittest
 import warnings
 from docutils.parsers.rst import directives
-
-from pyquickhelper.loghelper.flog import fLOG
-from pyquickhelper.pycode import get_temp_folder
+from pyquickhelper.pycode import get_temp_folder, ExtTestCase
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.sphinxext import RunPythonDirective
 
 
-class TestRunPythonExtensionToggle(unittest.TestCase):
+class TestRunPythonExtensionToggle(ExtTestCase):
 
     def test_post_parse(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         directives.register_directive("runpython", RunPythonDirective)
 
     def test_runpython_toggle(self):
         """
         this test also test the extension runpython
         """
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes
 
         class runpythonthis_node(nodes.Structural, nodes.Element):
@@ -72,8 +59,7 @@ def depart_rp_node(self, node):
                         import sys
                         print(u"setsysvar: " + str(sys.__dict__.get('enable_disabled_documented_pieces_of_code', None)))
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("runpythonthis", RunPythonThisDirective, runpythonthis_node,
                   visit_rp_node, depart_rp_node)]
diff --git a/_unittests/ut_sphinxext/test_runpython_store_in_file.py b/_unittests/ut_sphinxext/test_runpython_store_in_file.py
index cde29f83..4fbc4678 100644
--- a/_unittests/ut_sphinxext/test_runpython_store_in_file.py
+++ b/_unittests/ut_sphinxext/test_runpython_store_in_file.py
@@ -2,13 +2,10 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
 import warnings
 from docutils.parsers.rst import directives
-
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.pycode import ExtTestCase, get_temp_folder
 from pyquickhelper.sphinxext.sphinx_runpython_extension import RunPythonDirective
diff --git a/_unittests/ut_sphinxext/test_sharenet_extension.py b/_unittests/ut_sphinxext/test_sharenet_extension.py
index 85f78377..71cc966d 100644
--- a/_unittests/ut_sphinxext/test_sharenet_extension.py
+++ b/_unittests/ut_sphinxext/test_sharenet_extension.py
@@ -2,19 +2,16 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
 import warnings
 from docutils.parsers.rst import directives
-
-from pyquickhelper.pycode import get_temp_folder
+from pyquickhelper.pycode import get_temp_folder, ExtTestCase
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.sphinxext import ShareNetDirective
 
 
-class TestShareNetExtension(unittest.TestCase):
+class TestShareNetExtension(ExtTestCase):
 
     def test_post_parse_sn(self):
         directives.register_directive("sharenet", ShareNetDirective)
@@ -36,8 +33,7 @@ def test_sharenet(self):
 
                     this code shoud appear
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         html = rst2html(content,  # fLOG=fLOG,
                         writer="html", keep_warnings=True,
@@ -86,8 +82,7 @@ def test_sharenet_inline(self):
 
                     abeforea :sharenet:`facebook-linkedin-twitter-20-body` aaftera
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         html = rst2html(content,  # fLOG=fLOG,
                         writer="html", keep_warnings=True,
@@ -128,8 +123,7 @@ def test_sharenet_inline_rst(self):
 
                     abeforea :sharenet:`facebook-linkedin-twitter-30-body` aaftera
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         html = rst2html(content,  # fLOG=fLOG,
                         writer="rst", keep_warnings=True,
@@ -154,8 +148,7 @@ def test_sharenet_directive_rst(self):
 
                     aaftera
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         html = rst2html(content,  # fLOG=fLOG,
                         writer="rst", keep_warnings=True,
diff --git a/_unittests/ut_sphinxext/test_simpleimage_extension.py b/_unittests/ut_sphinxext/test_simpleimage_extension.py
index ca47a298..7cfd9665 100644
--- a/_unittests/ut_sphinxext/test_simpleimage_extension.py
+++ b/_unittests/ut_sphinxext/test_simpleimage_extension.py
@@ -2,7 +2,6 @@
 @brief      test log(time=6s)
 @author     Xavier Dupre
 """
-import sys
 import os
 import unittest
 import warnings
@@ -10,7 +9,8 @@
 import shutil
 from io import StringIO
 from docutils.parsers.rst import directives
-from pyquickhelper.pycode import get_temp_folder, ExtTestCase, is_travis_or_appveyor
+from pyquickhelper.pycode import (
+    get_temp_folder, ExtTestCase, is_travis_or_appveyor)
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.sphinxext import SimpleImageDirective
 from pyquickhelper.helpgen.sphinxm_custom_app import CustomSphinxApp
@@ -46,8 +46,7 @@ def test_simpleimage(self):
 
                     this code should appear
                     """.replace("                    ", "").format(img)
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         logger2 = logging.getLogger("video")
 
diff --git a/_unittests/ut_sphinxext/test_style_doc.py b/_unittests/ut_sphinxext/test_style_doc.py
index 57322e92..1083fc47 100644
--- a/_unittests/ut_sphinxext/test_style_doc.py
+++ b/_unittests/ut_sphinxext/test_style_doc.py
@@ -2,26 +2,20 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
-
-from pyquickhelper.loghelper.flog import fLOG
+from pyquickhelper.pycode import ExtTestCase
 from pyquickhelper.helpgen import rst2html
-from pyquickhelper.sphinxext import get_default_extensions, get_default_standard_extensions
+from pyquickhelper.sphinxext import (
+    get_default_extensions, get_default_standard_extensions)
 from pyquickhelper.helpgen.utils_sphinx_doc import private_migrating_doxygen_doc
-from pyquickhelper.helpgen._fake_function_to_documentation import f1, f2, f3, f4, f5, f6
+from pyquickhelper.helpgen._fake_function_to_documentation import (
+    f1, f2, f3, f4, f5, f6)
 
 
-class TestStyleDoc(unittest.TestCase):
+class TestStyleDoc(ExtTestCase):
 
     def test_docstyle(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         extensions = get_default_standard_extensions() + get_default_extensions()
         extensions = [_ for _ in extensions if "matplotlib" not in _ and
                       "images" not in _ and "IPython" not in _ and
diff --git a/_unittests/ut_sphinxext/test_template_extension.py b/_unittests/ut_sphinxext/test_template_extension.py
index 067945fa..651ea28e 100644
--- a/_unittests/ut_sphinxext/test_template_extension.py
+++ b/_unittests/ut_sphinxext/test_template_extension.py
@@ -2,19 +2,15 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
 import warnings
-
-from pyquickhelper.loghelper.flog import fLOG
-from pyquickhelper.pycode import get_temp_folder
+from pyquickhelper.pycode import get_temp_folder, ExtTestCase
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.sphinxext import python_link_doc
 
 
-class TestTemplateExtension(unittest.TestCase):
+class TestTemplateExtension(ExtTestCase):
 
     def test_python_link_doc(self):
         link = python_link_doc("os")
@@ -27,11 +23,6 @@ def test_python_link_doc(self):
             "`os.getcwd <https://docs.python.org/3/library/os.html#os.getcwd>`_")
 
     def test_tpl_inline(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -40,8 +31,7 @@ def test_tpl_inline(self):
 
                     abeforea :tpl:`onetmpl,p1='valstr',p2=4` aaftera
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         html = rst2html(content,  # fLOG=fLOG,
                         writer="custom", keep_warnings=True,
@@ -65,11 +55,6 @@ def test_tpl_inline(self):
             f.write(html)
 
     def test_tpl_inline_url(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -78,8 +63,7 @@ def test_tpl_inline_url(self):
 
                     abeforea :tpl:`url,name='zoo',obj='boo'` aaftera
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         html = rst2html(content,  # fLOG=fLOG,
                         writer="custom", keep_warnings=True,
@@ -113,11 +97,6 @@ def test_tpl_inline_url(self):
             f.write(html)
 
     def test_tpl_inline_function(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -126,8 +105,7 @@ def test_tpl_inline_function(self):
 
                     abeforea :tpl:`py,m='io'` aaftera
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         html = rst2html(content,  # fLOG=fLOG,
                         writer="custom", keep_warnings=True,
diff --git a/_unittests/ut_sphinxext/test_thumbnail_extension.py b/_unittests/ut_sphinxext/test_thumbnail_extension.py
index 10c3b7be..dbcb0c27 100644
--- a/_unittests/ut_sphinxext/test_thumbnail_extension.py
+++ b/_unittests/ut_sphinxext/test_thumbnail_extension.py
@@ -2,15 +2,12 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-import sys
 import os
 import unittest
 import warnings
 import logging
 from io import StringIO
 from docutils.parsers.rst import directives
-
-from pyquickhelper.loghelper.flog import fLOG
 from pyquickhelper.pycode import get_temp_folder, ExtTestCase
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.helpgen.sphinxm_custom_app import CustomSphinxApp
@@ -24,19 +21,9 @@ def setUp(self):
         logger.disabled = True
 
     def test_post_parse_sn(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         directives.register_directive("image", ImageDirective)
 
     def test_thumbnail(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -54,8 +41,7 @@ def test_thumbnail(self):
 
                     this code shoud appear
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         logger2 = logging.getLogger("video")
 
@@ -93,11 +79,6 @@ def test_thumbnail(self):
             f.write(html)
 
     def test_sphinx_ext_thumbnail_html(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         temp = get_temp_folder(__file__, "temp_sphinx_ext_thumbnail_html")
         src_ = os.path.join(temp, "..", "data", "image")
 
diff --git a/_unittests/ut_sphinxext/test_tocdelay_extension.py b/_unittests/ut_sphinxext/test_tocdelay_extension.py
index 39da0bc4..0099722e 100644
--- a/_unittests/ut_sphinxext/test_tocdelay_extension.py
+++ b/_unittests/ut_sphinxext/test_tocdelay_extension.py
@@ -2,19 +2,17 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
 import warnings
 from docutils.parsers.rst import directives
 from sphinx.errors import ExtensionError
-from pyquickhelper.pycode import get_temp_folder, ignore_warnings
+from pyquickhelper.pycode import get_temp_folder, ignore_warnings, ExtTestCase
 from pyquickhelper.helpgen import rst2html, rst2rst_folder
 from pyquickhelper.sphinxext import TocDelayDirective
 
 
-class TestTocDelayExtension(unittest.TestCase):
+class TestTocDelayExtension(ExtTestCase):
 
     def test_post_parse(self):
         directives.register_directive("tocdelay", TocDelayDirective)
diff --git a/_unittests/ut_sphinxext/test_todoext_extension.py b/_unittests/ut_sphinxext/test_todoext_extension.py
index 9373c2a6..0768a47e 100644
--- a/_unittests/ut_sphinxext/test_todoext_extension.py
+++ b/_unittests/ut_sphinxext/test_todoext_extension.py
@@ -2,36 +2,22 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
 from docutils.parsers.rst import directives
-
-from pyquickhelper.loghelper.flog import fLOG
-from pyquickhelper.pycode import get_temp_folder
+from pyquickhelper.pycode import get_temp_folder, ExtTestCase
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.sphinxext import TodoExt, TodoExtList
 from pyquickhelper.sphinxext.sphinx_todoext_extension import todoext_node, visit_todoext_node, depart_todoext_node
 
 
-class TestTodoExtExtension(unittest.TestCase):
+class TestTodoExtExtension(ExtTestCase):
 
     def test_post_parse_sn_todoext(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         directives.register_directive("todoext", TodoExt)
         directives.register_directive("todoextlist", TodoExtList)
 
     def test_todoext(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -49,8 +35,7 @@ def test_todoext(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("todoext", TodoExt, todoext_node,
                   visit_todoext_node, depart_todoext_node)]
@@ -83,11 +68,6 @@ def test_todoext(self):
             raise Exception(html)
 
     def test_todoextlist(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -107,8 +87,7 @@ def test_todoextlist(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("todoext", TodoExt, todoext_node,
                   visit_todoext_node, depart_todoext_node)]
@@ -138,11 +117,6 @@ def test_todoextlist(self):
             raise Exception(html)
 
     def test_todoext_done(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -161,8 +135,7 @@ def test_todoext_done(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("todoext", TodoExt, todoext_node,
                   visit_todoext_node, depart_todoext_node)]
diff --git a/_unittests/ut_sphinxext/test_video_extension.py b/_unittests/ut_sphinxext/test_video_extension.py
index 448d57fe..8fb39ebf 100644
--- a/_unittests/ut_sphinxext/test_video_extension.py
+++ b/_unittests/ut_sphinxext/test_video_extension.py
@@ -2,7 +2,6 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-import sys
 import os
 import unittest
 import warnings
@@ -11,8 +10,6 @@
 from platform import system
 from io import StringIO
 from docutils.parsers.rst import directives
-
-from pyquickhelper.loghelper.flog import fLOG
 from pyquickhelper.pycode import get_temp_folder, ExtTestCase, is_travis_or_appveyor
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.sphinxext import VideoDirective
@@ -28,20 +25,10 @@ def setUp(self):
         logger.disabled = True
 
     def test_post_parse_sn(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         directives.register_directive("video", VideoDirective)
 
     @unittest.skipIf(system() == "Darwin", reason="no end")
     def test_video(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -58,8 +45,7 @@ def test_video(self):
 
                     this code shoud appear
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         logger2 = logging.getLogger("video")
 
@@ -116,11 +102,6 @@ def setup_format(self, temp):
 
     @unittest.skipIf(system() == "Darwin", reason="no end")
     def test_sphinx_ext_video_html(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         temp = get_temp_folder(__file__, "temp_sphinx_ext_video_html")
 
         src_ = self.setup_format(temp)
@@ -141,11 +122,6 @@ def test_sphinx_ext_video_html(self):
 
     @unittest.skipIf(system() == "Darwin", reason="no end")
     def test_sphinx_ext_video_rst(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         temp = get_temp_folder(__file__, "temp_sphinx_ext_video_rst")
 
         src_ = self.setup_format(temp)
@@ -167,19 +143,11 @@ def test_sphinx_ext_video_rst(self):
 
     @unittest.skipIf(system() == "Darwin", reason="no end")
     def test_sphinx_ext_video_latex(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         temp = get_temp_folder(__file__, "temp_sphinx_ext_video_latex")
 
-        fLOG('custom app init')
         src_ = self.setup_format(temp)
         app = CustomSphinxApp(src_, temp, buildername="latex")
-        fLOG('custom app build')
         app.build()
-        fLOG('custom app done')
 
         index = os.path.join(temp, "pyq-video.tex")
         self.assertExists(index)
@@ -196,19 +164,12 @@ def test_sphinx_ext_video_latex(self):
 
         if is_travis_or_appveyor() not in ('travis', 'appveyor'):
             latex = find_latex_path()
-            fLOG("latex-compile", latex)
             compile_latex_output_final(temp, latex, doall=True)
-            fLOG("compilatione done")
             index = os.path.join(temp, "pyq-video.pdf")
             self.assertExists(index)
 
     @unittest.skipIf(system() == "Darwin", reason="no end")
     def test_sphinx_ext_video_text(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         temp = get_temp_folder(__file__, "temp_sphinx_ext_video_text")
         src_ = self.setup_format(temp)
         app = CustomSphinxApp(src_, temp, buildername="text")
@@ -229,11 +190,6 @@ def test_sphinx_ext_video_text(self):
 
     @unittest.skipIf(system() == "Darwin", reason="no end")
     def test_video_url(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -249,8 +205,7 @@ def test_video_url(self):
 
                     this code shoud appear
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         logger2 = logging.getLogger("video")
 
diff --git a/_unittests/ut_sphinxext/test_youtube_extension.py b/_unittests/ut_sphinxext/test_youtube_extension.py
index 1ea3a3d3..35b49736 100644
--- a/_unittests/ut_sphinxext/test_youtube_extension.py
+++ b/_unittests/ut_sphinxext/test_youtube_extension.py
@@ -2,38 +2,24 @@
 @brief      test log(time=4s)
 @author     Xavier Dupre
 """
-
-import sys
 import os
 import unittest
 import logging
 from io import StringIO
 from docutils.parsers.rst import directives
 from sphinx.util.logging import getLogger
-
-from pyquickhelper.loghelper.flog import fLOG
-from pyquickhelper.pycode import get_temp_folder
+from pyquickhelper.pycode import get_temp_folder, ExtTestCase
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.sphinxext import YoutubeDirective
 from pyquickhelper.sphinxext.sphinx_youtube_extension import youtube_node, visit_youtube_node, depart_youtube_node
 
 
-class TestYoutubeExtension(unittest.TestCase):
+class TestYoutubeExtension(ExtTestCase):
 
     def test_post_parse_sn_youtube(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         directives.register_directive("youtube", YoutubeDirective)
 
     def test_youtube(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -48,8 +34,7 @@ def test_youtube(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("youtube", YoutubeDirective, youtube_node,
                   visit_youtube_node, depart_youtube_node)]
@@ -78,11 +63,6 @@ def test_youtube(self):
             raise Exception(html)
 
     def test_youtube_size(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -98,8 +78,7 @@ def test_youtube_size(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("youtube", YoutubeDirective, youtube_node,
                   visit_youtube_node, depart_youtube_node)]
@@ -128,11 +107,6 @@ def test_youtube_size(self):
             raise Exception(html)
 
     def test_youtube_size_nowarning(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -148,8 +122,7 @@ def test_youtube_size_nowarning(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("youtube", YoutubeDirective, youtube_node,
                   visit_youtube_node, depart_youtube_node)]
@@ -165,11 +138,6 @@ def test_youtube_size_nowarning(self):
         self.assertIn('<iframe src="https://www.youtube', cst)
 
     def test_youtube_size_warning(self):
-        fLOG(
-            __file__,
-            self._testMethodName,
-            OutputPrint=__name__ == "__main__")
-
         from docutils import nodes as skip_
 
         content = """
@@ -185,8 +153,7 @@ def test_youtube_size_warning(self):
 
                     after
                     """.replace("                    ", "")
-        if sys.version_info[0] >= 3:
-            content = content.replace('u"', '"')
+        content = content.replace('u"', '"')
 
         tives = [("youtube", YoutubeDirective, youtube_node,
                   visit_youtube_node, depart_youtube_node)]
diff --git a/src/pyquickhelper/helpgen/sphinxm_convert_doc_sphinx_helper.py b/src/pyquickhelper/helpgen/sphinxm_convert_doc_sphinx_helper.py
index 22f7eef7..69a33885 100644
--- a/src/pyquickhelper/helpgen/sphinxm_convert_doc_sphinx_helper.py
+++ b/src/pyquickhelper/helpgen/sphinxm_convert_doc_sphinx_helper.py
@@ -1259,8 +1259,11 @@ def create_builder(self, name):
         if name is None:
             raise ValueError(  # pragma: no cover
                 "Builder name cannot be None")
-
-        return self.registry.create_builder(self, name, env=self.env)
+        try:
+            return self.registry.create_builder(self, name, env=self.env)
+        except TypeError:
+            # old version of sphinx
+            return self.registry.create_builder(self, name)
 
     def _extended_init_(self):
         """

From 02a8be474b8f7737a849083596988392bec028ef Mon Sep 17 00:00:00 2001
From: xadupre <xadupre@microsoft.com>
Date: Mon, 25 Jul 2022 11:18:20 +0200
Subject: [PATCH 7/7] fix missing import

---
 _unittests/ut_sphinxext/test_cmdref_extension.py            | 2 +-
 .../helpgen/sphinxm_convert_doc_sphinx_helper.py            | 6 +++++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/_unittests/ut_sphinxext/test_cmdref_extension.py b/_unittests/ut_sphinxext/test_cmdref_extension.py
index 85f151c0..08221e97 100644
--- a/_unittests/ut_sphinxext/test_cmdref_extension.py
+++ b/_unittests/ut_sphinxext/test_cmdref_extension.py
@@ -9,7 +9,7 @@
 import pyquickhelper
 from pyquickhelper.pycode import (
     get_temp_folder, ExtTestCase, is_travis_or_appveyor,
-    skipif_azure_macosx)
+    skipif_azure_macosx, ignore_warnings)
 from pyquickhelper.helpgen import rst2html
 from pyquickhelper.sphinxext import CmdRef, CmdRefList
 from pyquickhelper.sphinxext.sphinx_cmdref_extension import (
diff --git a/src/pyquickhelper/helpgen/sphinxm_convert_doc_sphinx_helper.py b/src/pyquickhelper/helpgen/sphinxm_convert_doc_sphinx_helper.py
index 69a33885..1e7c4b42 100644
--- a/src/pyquickhelper/helpgen/sphinxm_convert_doc_sphinx_helper.py
+++ b/src/pyquickhelper/helpgen/sphinxm_convert_doc_sphinx_helper.py
@@ -476,7 +476,11 @@ def _init(self, base_class, app, env=None):
             sphinx.util.osutil.ensuredir = custom_ensuredir
             sphinx.builders.ensuredir = custom_ensuredir
 
-        base_class.__init__(self, app=app, env=env)
+        try:
+            base_class.__init__(self, app=app, env=env)
+        except TypeError:
+            # older version of sphinx
+            base_class.__init__(self, app=app)
         self.built_pages = {}
         self.base_class = base_class