On 2020-07-22 11:54, Oscar Benjamin wrote: >> On Wed, Jul 22, 2020 at 11:04 AM Tim Chase wrote: >>> reading through the language specs and didn't encounter >>> anything about booleans returned from comparisons-operators, >>> guaranteeing that they always return The One True and The One >>> False. >> >> That said, though, a comparison isn't required to return a bool. >> If it *does* return a bool, it has to be one of those exact two, >> but it could return anything it chooses. But for built-in types >> and most user-defined types, you will indeed get a bool. > > I'm not sure if this is relevant to the question but thought I'd > mention concrete examples. A numpy array will return non-bool for > both of the mentioned operators
that is indeed a helpful data-point. Do you know of any similar example in the standard library of things where comparison-operators return something other than True or False (or None)? Thanks, -tkc -- https://mail.python.org/mailman/listinfo/python-list
