Make doctests compatible with expected enum changes in Python 3.11

[jacobtylerwalls]

fixDoctests() will need to account for the new repr() of enums in Python >=3.10, see python/cpython#22392.

Otherwise the test suite looks fine on Python 3.10b2.

[mscuthbert]

Possibly the best thing to do in fixDocTests() for now is to temporarily change Enum.repr and Enum.str to the older versions, and then once 3.11 is out and most users are on 3.10+ to change Enum.repr and Enum.str on older versions to match 3.10+? This is hard to find.

[jacobtylerwalls]

Looks like this will be reverted from the 3.10 beta and will need to wait for a PEP: https://bugs.python.org/issue44559

[mscuthbert]

We can leave this open as an issue for "Make doctests compatible with Python 3.11"?

[jacobtylerwalls]

The changes will be backed out of 3.11, also, since the PEP was rejected: https://mail.python.org/archives/list/[email protected]/message/RN3WCRZSTQR55DOHJTZ2KIO6CZPJPCU7/

[mscuthbert]

Thanks. It's too bad, since the new Enum reprs were such an improvement. But the path to compatibility was really difficult. It'll have to happen another way.