> You could write it as a ^ (not b), as long as you don't mind it giving back an integer rather than a bool.
Actually, that'll give back a bool if a is a bool (and (not b) produces a bool); ^ is overridden for bool/bool operations and itself returns a bool. On Tue, Feb 23, 2021 at 1:48 AM Chris Angelico <ros...@gmail.com> wrote: > On Tue, Feb 23, 2021 at 12:14 PM Soni L. <fakedme...@gmail.com> wrote: > > > > Currently ~False is -1 and ~True is -2. Would be nicer if ~bool was the > > same as not bool. Hopefully nobody actually relies on this but > > nevertheless, it would be a backwards-incompatible change so the whole > > deprecation warnings and whatnot would be required. > > There are quite a few ways in which bitwise operators are not the same > as boolean operators. What would be the advantage of having them be > the same in just this one case? > > > In particular, this is nice for xnor operator: a ^~ b. This currently > > works on ints, but not on bools, while most other operators, including > > xor, do successfully work on bools. > > You could write it as a ^ (not b), as long as you don't mind it giving > back an integer rather than a bool. Fundamentally, you're doing > bitwise operations on integers, and expecting them to behave as if > they have only a single bit each, so another way to resolve this might > be to mask it off at the end with "& 1". > > If this makes your code horrendously ugly, perhaps it would be better > to create your own "one-bit integer" class, which responds to all > bitwise operators by automatically masking down to one bit? > > ChrisA > _______________________________________________ > Python-ideas mailing list -- python-ideas@python.org > To unsubscribe send an email to python-ideas-le...@python.org > https://mail.python.org/mailman3/lists/python-ideas.python.org/ > Message archived at > https://mail.python.org/archives/list/python-ideas@python.org/message/6HLSLQMMKYNLSEQCIIDVKXIGV2TZFREE/ > Code of Conduct: http://python.org/psf/codeofconduct/ >
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