Merge pull request #83 from MarcoGorelli/allow-only-values

BUG allow only keys

nbqa/__main__.py

@@ -264,10 +264,13 @@ def main(raw_args=None):
             replace_magics.main(temp_python_file)
             _create_blank_init_files(notebook, tmpdirname)
 
-        config = configparser.ConfigParser()
+        config = configparser.ConfigParser(allow_no_value=True)
         config.read(".nbqa.ini")
         if command in config.sections():
-            configs = [[f"--{key}", val] for key, val in config[command].items()]
+            configs = [
+                [f"--{key}", val] if val is not None else [f"--{key}"]
+                for key, val in config[command].items()
+            ]
             kwargs.extend([j for i in configs for j in i])
         out, err, output_code = _run_command(
             command, root_dir, tmpdirname, nb_to_py_mapping, kwargs

tests/test_nbqa_ini.py

@@ -12,7 +12,7 @@ def test_nbqa_ini_works(tmp_notebook_for_testing, capsys):
     """
 
     with open(".nbqa.ini", "w") as f:
-        f.write("[flake8]\nignore=F401\nselect=E303\n")
+        f.write("[flake8]\nignore=F401\nselect=E303\nquiet\n")
 
     # check diff
     with open(tmp_notebook_for_testing, "r") as handle:
@@ -30,7 +30,7 @@ def test_nbqa_ini_works(tmp_notebook_for_testing, capsys):
 
     # check out and err
     out, err = capsys.readouterr()
-    expected_out = "tests/data/notebook_starting_with_md.ipynb:cell_3:0:1: E303 too many blank lines (3)\n"
+    expected_out = "tests/data/notebook_starting_with_md.ipynb\n"
     expected_err = ""
     assert sorted(out.splitlines()) == sorted(expected_out.splitlines())
     assert sorted(err.splitlines()) == sorted(expected_err.splitlines())