Log Message:
py-mypy: updated to 0.971

0.971
Speed up accessing always defined native attributes
Reduce the overhead of reference counting
Fix Python 3.11 C API errors
Generate smaller code for casts and some implicit type coercions
Optimize calling Python objects with zero or one arguments
Replace integer floor division by a power of two with a shift
Add primitives for faster access of float and tuple type objects
Fix compile error related to operator assignment in a generator function