py3.10-prep: Finally support Python 3.10

After the major problems are solved in
    py3.10-prep: re-implement zip import
    py3.10-prep: reset the type cache after feature switching
    py3.10-prep: Fix parser.py for changed typing module

, there are only some minor changes left to do. One thing
is still not clear:

* Unsolved: In time_test.py, the last two tests work but
crash at shutdown.
It is not yet clear if this is a PySide or Python error.

This will crash Python 3.10 if not solved until the release.

[ChangeLog][PySide6] Support Python 3.10. This is by 99% solved.
Looking for a crash with unknown origin.

Fixes: PYSIDE-1436
Change-Id: I94cffa7ed16a2651e09924fe5babc188b1b4c2b8
Reviewed-by: Christian Tismer <tismer@stackless.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/sources/pyside6/tests/QtWidgets/signature_test.py b/sources/pyside6/tests/QtWidgets/signature_test.py
index 94224c6ae..c507c2ca7 100644
--- a/sources/pyside6/tests/QtWidgets/signature_test.py
+++ b/sources/pyside6/tests/QtWidgets/signature_test.py
@@ -64,8 +64,9 @@ class PySideSignatureTest(unittest.TestCase):
         for thing in obj.__signature__:
             self.assertEqual(type(thing), inspect.Signature)
         sm = PySide6.QtWidgets.QApplication.__dict__["palette"]
-        self.assertFalse(callable(sm))
-        self.assertEqual(sm.__func__, obj)
+        # PYSIDE-1436: staticmethod is a callable since Python 3.10
+        # Instead of checking callable(sm), we check the type:
+        self.assertEqual(type(sm), staticmethod)
         self.assertTrue(hasattr(sm, "__signature__") and
                         sm.__signature__ is not None)