What sort of code would be able to do anything useful with either a sequence or a queue? Queues aren’t iterable. This seems a case of hyper-generalization.
On Tue, Aug 24, 2021 at 22:19 Christopher Barker <python...@gmail.com> wrote: > Bringing this back on list: > > On Tue, Aug 24, 2021 at 9:58 PM David Mertz, Ph.D. <david.me...@gmail.com> > wrote: > >> Sorry, I should have been more explicit. The several kinda of queues can >> all "contain" items, but do not respond to len(). >> > > yeah, I should have looked more closely at your list > > Though i would consider that an oversight, len(a_queue) could be handy. > > There is qsize() -- I wonder if there's a reason not to have __len__ do > the same thing -- O(n) maybe? See Guido's point that there's an assumption > tha len() will be O(1). > > This is an argument for the OP's point -- there is no standard way to > check emptiness. > > -CHB > > -- > Christopher Barker, PhD (Chris) > > Python Language Consulting > - Teaching > - Scientific Software Development > - Desktop GUI and Web Development > - wxPython, numpy, scipy, Cython > _______________________________________________ > 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/EEK7QHRGT2P5WLEOOJCPJQSR6VEDAJVC/ > Code of Conduct: http://python.org/psf/codeofconduct/ > -- --Guido (mobile)
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