The Python bitwise-inversion (or complement) operator, "~", behaves
pretty much as expected when it is applied to integers-it toggles every
bit, from one
to zero and vice versa.  It might be expected that applying the
operator to a non-integer, a bool
for example, would raise a TypeError, but, because the
bool type is really an int
in disguise, the complement operator is allowed, at least for now.  For
nearly 15�years (and perhaps longer), there have been discussions about the
oddity of that behavior and whether it should be changed.  Eventually,
that resulted in the "feature" being deprecated, producing a warning, with
removal slated for
Python�3.16 (due October 2027). That has led to some reconsideration and the
deprecation may itself be deprecated.

https://lwn.net/Articles/1059177/
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