Guido van Rossum <[email protected]> added the comment:
It never occurred to me that making b&b an b|b return bool would be considered
a bad thing just because ~b is not a bool. That's like complaining that 1+1
returns an int rather than a float for consistency with 1/2 returning a float.
Because bool is embedded in int, it's okay to return a bool value *that
compares equal to the int from the corresponding int operation*. Code that
accepts ints and is passed bools will continue to work. But if we were to make
~b return `not b`, that makes bool not embedded in int (for the sake of numeric
operations).
Take for example
def f(a: int) -> int:
return ~a
I don't think it's a good idea to make f(0) != f(False).
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<https://bugs.python.org/issue37831>
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