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Groups > comp.lang.python > #10578
| From | Terry Reedy <tjreedy@udel.edu> |
|---|---|
| Subject | Re: NoneType and new instances |
| Date | 2011-07-30 09:35 -0400 |
| References | <mailman.1575.1311866659.1164.python-list@python.org> <4e320a02$0$29966$c3e8da3$5496439d@news.astraweb.com> <99h9r1FprmU1@mid.individual.net> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.1655.1312032960.1164.python-list@python.org> (permalink) |
Ethan's proposal was accepted on python-ideas. In Python 3.3, the classes for the singletons None, Ellipsis, and NotImplemented will be callables that return the singleton. It turns out that the reason an exception is now raised is that there currently is no .__new__ method, so an exception is raised by default. .__new__ methods returning the singleton have been added. Terry Jan Reedy
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NoneType and new instances Ethan Furman <ethan@stoneleaf.us> - 2011-07-28 08:39 -0700
Re: NoneType and new instances Billy Mays <81282ed9a88799d21e77957df2d84bd6514d9af6@myhashismyemail.com> - 2011-07-28 11:34 -0400
Re: NoneType and new instances Ben Finney <ben+python@benfinney.id.au> - 2011-07-29 07:46 +1000
Re: NoneType and new instances Ethan Furman <ethan@stoneleaf.us> - 2011-07-28 15:26 -0700
Re: NoneType and new instances Ben Finney <ben+python@benfinney.id.au> - 2011-07-29 09:52 +1000
Re: NoneType and new instances Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-07-29 11:16 +1000
Re: NoneType and new instances Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2011-07-30 14:50 +1200
Re: NoneType and new instances Terry Reedy <tjreedy@udel.edu> - 2011-07-30 09:35 -0400
Re: NoneType and new instances python@bdurham.com - 2011-07-30 11:43 -0400
Re: NoneType and new instances "bruno.desthuilliers@gmail.com" <bruno.desthuilliers@gmail.com> - 2011-07-30 09:39 -0700
Re: NoneType and new instances Terry Reedy <tjreedy@udel.edu> - 2011-07-30 23:34 -0400
Re: NoneType and new instances Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-07-31 14:28 +1000
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