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Created on 2013-07-23 16:07 by James.Lu, last changed 2022-04-11 14:57 by admin. This issue is now closed.
| Messages (7) | |||
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| msg193608 - (view) | Author: James Lu (James.Lu) * | Date: 2013-07-23 16:07 | |
the bool type should have a toggle() function |
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| msg193609 - (view) | Author: Eric V. Smith (eric.smith) *  |
Date: 2013-07-23 16:10 | |
bool instances are immutable, so all "value.toggle()" could do is the same as "not value". That is, return a new bool with the "toggled" value. |
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| msg193610 - (view) | Author: James Lu (James.Lu) * | Date: 2013-07-23 16:12 | |
I mean, return a value, some people like this style. james On Tue, Jul 23, 2013 at 12:10 PM, Eric V. Smith <report@bugs.python.org>wrote: > > Eric V. Smith added the comment: > > bool instances are immutable, so all "value.toggle()" could do is the same > as "not value". That is, return a new bool with the "toggled" value. > > ---------- > nosy: +eric.smith > resolution: -> invalid > status: open -> closed > > _______________________________________ > Python tracker <report@bugs.python.org> > <http://bugs.python.org/issue18537> > _______________________________________ > |
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| msg193611 - (view) | Author: Eric V. Smith (eric.smith) * |
Date: 2013-07-23 16:23 | |
Since it would be the same as "not value", I can't imagine this would be added to the language. |
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| msg193612 - (view) | Author: James Lu (James.Lu) * | Date: 2013-07-23 16:29 | |
well, filter() could take the function not lambda x:not x james On Tue, Jul 23, 2013 at 12:23 PM, Eric V. Smith <report@bugs.python.org>wrote: > > Eric V. Smith added the comment: > > Since it would be the same as "not value", I can't imagine this would be > added to the language. > > ---------- > > _______________________________________ > Python tracker <report@bugs.python.org> > <http://bugs.python.org/issue18537> > _______________________________________ > |
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| msg193614 - (view) | Author: Eric V. Smith (eric.smith) * |
Date: 2013-07-23 16:39 | |
If that's your concern, you can use operator.not_. >>> import operator >>> filter(operator.not_, [False, True, False, False, True]) [False, False, False] |
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| msg193777 - (view) | Author: Raymond Hettinger (rhettinger) * |
Date: 2013-07-27 06:34 | |
FYI, the itertools module has ifilterfalse() for inverse filtering. |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:57:48 | admin | set | github: 62737 |
| 2013-07-27 06:34:10 | rhettinger | set | resolution: not a bug -> rejected messages: + msg193777 nosy: + rhettinger |
| 2013-07-23 16:39:25 | eric.smith | set | messages: + msg193614 |
| 2013-07-23 16:29:25 | James.Lu | set | messages: + msg193612 |
| 2013-07-23 16:23:31 | eric.smith | set | messages: + msg193611 |
| 2013-07-23 16:12:11 | James.Lu | set | messages: + msg193610 |
| 2013-07-23 16:10:27 | eric.smith | set | status: open -> closed nosy: + eric.smith messages: + msg193609 resolution: not a bug |
| 2013-07-23 16:07:38 | James.Lu | create | |