Summary

It was expected to be useful when we pinned a CPython target version and tries to revert tests back to original one.
While we are following up CPython's every update, I found it is easily can be fixed during updating to new CPython library and the separated commits are less useful.
It will makes more friendly experience for new contributors.

Drawbacks, Rationale, and Alternatives

Rather than depending on commits and their messages, we'd better to comment better on the code with TODO: and XXX: not to confuse future contributors to remove them or not.

Unresolved Questions