It was a VERY long time ago when True and False were not singletons. I don't think we should still try to write code based on rules that stopped applying more than a decade ago.
On Mon, Mar 18, 2019, 5:42 PM Greg Ewing <greg.ew...@canterbury.ac.nz> wrote: > Oleg Broytman wrote: > > Three-way (tri state) checkbox. You have to distinguish False and > > None if the possible valuse are None, False and True. > > In that case the conventional way to write it would be > > if settings[MY_KEY] == True: > ... > > It's not a major issue, but I get nervous when I see code > that assumes True and False are unique, because things > weren't always that way. > > -- > Greg > _______________________________________________ > Python-ideas mailing list > Python-ideas@python.org > https://mail.python.org/mailman/listinfo/python-ideas > Code of Conduct: http://python.org/psf/codeofconduct/ >
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