Python 3.12 on GHA compatibility issue

[dataflake]

The exception shown below is thrown on Python 3.12 on the macOS and Ubuntu GitHub Actions runners. Please note:

• I cannot reproduce it on a local Linux/x86_64 (Rocky Linux 9)
• I cannot reproduce it on a local macOS/arm64
• I cannot reproduce it on a local macOS/x86_64 with the same universal2-Architecture Python used by the GHA runner
• The zope.proxy test suite runs fine on Python 3.12 on GHA, indicating zope.proxy itself is not the culprit

Error in test test___getattr___w_checker_unauthorized (zope.security.tests.test_proxy.ProxyPyTests.test___getattr___w_checker_unauthorized)
Traceback (most recent call last):
  File "/opt/hostedtoolcache/Python/3.12.0-alpha.7/x64/lib/python3.12/unittest/case.py", line 58, in testPartExecutor
    yield
  File "/opt/hostedtoolcache/Python/3.12.0-alpha.7/x64/lib/python3.12/unittest/case.py", line 634, in run
    self._callTestMethod(testMethod)
  File "/opt/hostedtoolcache/Python/3.12.0-alpha.7/x64/lib/python3.12/unittest/case.py", line 589, in _callTestMethod
    if method() is not None:
  File "/home/runner/work/zope.security/zope.security/src/zope/security/tests/test_proxy.py", line 55, in test___getattr___w_checker_unauthorized
    self.assertRaises(Unauthorized, getattr, proxy, 'bar')
  File "/opt/hostedtoolcache/Python/3.12.0-alpha.7/x64/lib/python3.12/unittest/case.py", line 778, in assertRaises
    return context.handle('assertRaises', args, kwargs)
  File "/opt/hostedtoolcache/Python/3.12.0-alpha.7/x64/lib/python3.12/unittest/case.py", line 238, in handle
    callable_obj(*args, **kwargs)
  File "/home/runner/work/zope.security/zope.security/src/zope/security/proxy.py", line 156, in __getattr__
    wrapped = super().__getattribute__('_wrapped')
SystemError: <class 'super'> returned a result with an exception set

[icemac]

Could it be that zopefoundation/zope.proxy#43 is the reason behind this problem? Maybe it is just not triggered by the zope.proxy tests.
See python/cpython#73734 for details about the replacement for the deprecated function.

[d-maurer]

Michael Howitz wrote at 2023-4-24 00:56 -0700:

Could it be that zopefoundation/zope.proxy#43 is the reason behind this problem? Maybe it is just not triggered by the zope.proxy tests. See python/cpython#73734 for details about the replacement for the deprecated function.

I do not think so: Such a problem should show up also for local tests, not only for the GHA tests (unless the executed tests would be different). I think something is wrong with the pregenerated wheel. Do you know a way to download this wheel to a local machine? Then, one could unpack the wheel to emulate the GHA test on the local machine -- hopefully reproducing the problem.

[dataflake]

Click on the Actions tab at the top, select a test run and then scroll down the right-side pane. The wheels are listed underneath the warning and error messages and can be downloaded from there.

[icemac]

Using Python 3.12b2 the problems vanished, see #100.