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 15ÿyears (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
Pythonÿ3.16 (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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