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Groups > comp.lang.python > #10466
| References | <4E3182C3.9040306@stoneleaf.us> |
|---|---|
| From | Ian Kelly <ian.g.kelly@gmail.com> |
| Date | 2011-07-28 11:12 -0600 |
| Subject | Re: NoneType and new instances |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.1579.1311873164.1164.python-list@python.org> (permalink) |
On Thu, Jul 28, 2011 at 9:39 AM, Ethan Furman <ethan@stoneleaf.us> wrote: > Why is NoneType unable to produce a None instance? I realise that None is a > singleton, but so are True and False, and bool is able to handle returning > them: The bool constructor works (actually just returns one of the existing singletons) so that you can do things like this: truth_value = bool(x + 5) return my_dict[truth_value] Why would you ever need to instantiate NoneType?
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Re: NoneType and new instances Ian Kelly <ian.g.kelly@gmail.com> - 2011-07-28 11:12 -0600 Re: NoneType and new instances Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-07-29 11:20 +1000
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