`qiskit.test.decorators.enforce_subclasses_call` machinery is broken in 3.11.1

Environment

• Qiskit Terra version:

HEAD of main, currently dd7f9390cf07

• Python version:

3.11.1

• Operating system:

Both macOS and ubuntu, so far.

What is happening?

import test.python raises an error in 3.11.1, therefore tests do not run. @wshanks has indicated that it is working fine for him in 3.11.0 but not 3.11.1 (I don’t have 3.11.0 installed).

Python 3.11.1 (v3.11.1:a7a450f84a, Dec  6 2022, 15:24:06) [Clang 13.0.0 (clang-1300.0.29.30)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import test.python
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/ihincks/ibm/qiskit-terra/test/__init__.py", line 16, in <module>
    from qiskit.test.utils import generate_cases
  File "/Users/ihincks/ibm/qiskit-terra/qiskit/test/__init__.py", line 15, in <module>
    from .base import QiskitTestCase
  File "/Users/ihincks/ibm/qiskit-terra/qiskit/test/base.py", line 167, in <module>
    class QiskitTestCase(BaseQiskitTestCase):
  File "/Users/ihincks/ibm/qiskit-terra/qiskit/utils/classtools.py", line 117, in out
    retval = method(*args, **kwargs)
             ^^^^^^^^^^^^^^^^^^^^^^^
TypeError: TestCase.__init_subclass__() missing 1 required positional argument: 'cls'

Or, see an example of this happening in CI: https://github.com/Qiskit/qiskit-experiments/actions/runs/3704009805/jobs/6281449337

How can we reproduce the issue?

Run the tests or simply import test.python in Python 3.11.1.

What should happen?

This should not error.

Any suggestions?

No response

[wshanks]

@ihincks When I see a message about _accelerate, it is usually because I forgot to run pip install . after switching branches or Python versions (because it is the first compiled thing that is imported).

[1ucian0]

please, revert https://github.com/Qiskit/qiskit-terra/pull/9296 when fixed.