Merge pull request #17331 from ccordoba12/drop-py36

PR: Increase required versions for Python and PyQt/Pyside

README.md

@@ -189,14 +189,14 @@ to install them separately in those cases.
 ### Build dependencies
 
 When installing Spyder from its source package, the only requirement is to have
-a Python version equal or greater than 3.6.
+a Python version equal or greater than 3.7.
 
 ### Runtime dependencies
 
 The basic dependencies to run Spyder are:
 
-* **Python** 3.6+: The core language Spyder is written in and for.
-* **PyQt5** 5.6+: Python bindings for Qt, used for Spyder's GUI.
+* **Python** 3.7+: The core language Spyder is written in and for.
+* **PyQt5** 5.9+: Python bindings for Qt, used for Spyder's GUI.
 
 The rest our dependencies (both required and optional) are declared in
 [this file](https://github.com/spyder-ide/spyder/blob/master/spyder/dependencies.py).

setup.py

@@ -39,8 +39,8 @@
 # Taken from the notebook setup.py -- Modified BSD License
 # =============================================================================
 v = sys.version_info
-if v[0] >= 3 and v[:2] < (3, 6):
-    error = "ERROR: Spyder requires Python version 3.6 and above."
+if v[0] >= 3 and v[:2] < (3, 7):
+    error = "ERROR: Spyder requires Python version 3.7 and above."
     print(error, file=sys.stderr)
     sys.exit(1)
 
@@ -178,14 +178,13 @@ def run(self):
     package_data={LIBNAME: get_package_data(LIBNAME, EXTLIST)},
     scripts=[osp.join('scripts', fname) for fname in SCRIPTS],
     data_files=get_data_files(),
-    python_requires='>=3.6',
+    python_requires='>=3.7',
     classifiers=[
         'License :: OSI Approved :: MIT License',
         'Operating System :: MacOS',
         'Operating System :: Microsoft :: Windows',
         'Operating System :: POSIX :: Linux',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: 3.9',

spyder/app/tests/spyder-boilerplate/setup.py

@@ -19,7 +19,7 @@
     author_email="spyder.python@gmail.com",
     description="Plugin that registers a programmatic custom layout",
     license="MIT license",
-    python_requires='>= 3.6',
+    python_requires='>= 3.7',
     install_requires=[
         "qtpy",
         "qtawesome",

spyder/requirements.py

@@ -39,7 +39,7 @@ def check_path():
 
 def check_qt():
     """Check Qt binding requirements"""
-    qt_infos = dict(pyqt5=("PyQt5", "5.6"), pyside2=("PySide2", "5.6"))
+    qt_infos = dict(pyqt5=("PyQt5", "5.9"), pyside2=("PySide2", "5.12"))
     try:
         import qtpy
         package_name, required_ver = qt_infos[qtpy.API]