[Rejected] New Boolean abstract base class for type validation supporting both bool and np.bool_

[smarie]

The idea is simple: today you can use numbers.Integral to denote an integer that can be an int or a np.int_. You have numbers.Real for real numbers similarly, etc. But you do not have an equivalent for booleans.

This was discussed here to the point it was accepted by Guido: https://groups.google.com/g/python-ideas/c/-3QW3cxj3ko/discussion?pli=1

Then it was re-discussed here to the point it was rejected: https://bugs.python.org/issue32886

[smarie]

Note: an implementation is available here: https://github.com/smarie/python-valid8/blob/master/valid8/utils/typing_tools.py