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Groups > comp.lang.python > #106274
| From | Vito De Tullio <vito.detullio@gmail.com> |
|---|---|
| Newsgroups | comp.lang.python |
| Subject | Re: Drowning in a teacup? |
| Date | 2016-04-02 07:45 +0200 |
| Message-ID | <mailman.355.1459575943.28225.python-list@python.org> (permalink) |
| References | <ndmlj2$pb0$1@gioia.aioe.org> |
Fillmore wrote:
> I need to scan a list of strings. If one of the elements matches the
> beginning of a search keyword, that element needs to snap to the front
> of the list.
I know this post regards the function passing, but, on you specific problem,
can't you just ... sort the list with a custom key?
something like (new list)
>>> sorted(['no_a', 'yes_c', 'no_b', 'yes_z', 'no_y', 'yes_x'],
... key=lambda e: not e.startswith('yes'))
['yes_c', 'yes_z', 'yes_x', 'no_a', 'no_b', 'no_y']
or (in place)
>>> l = ['no_a', 'yes_c', 'no_b', 'yes_z', 'no_y', 'yes_x']
>>> l.sort(key=lambda e: not e.startswith('yes'))
>>> l
['yes_c', 'yes_z', 'yes_x', 'no_a', 'no_b', 'no_y']
--
By ZeD
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Drowning in a teacup? Fillmore <fillmore_remove@hotmail.com> - 2016-04-01 16:27 -0400
Re: Drowning in a teacup? Rob Gaddi <rgaddi@highlandtechnology.invalid> - 2016-04-01 20:39 +0000
Re: Drowning in a teacup? Ian Kelly <ian.g.kelly@gmail.com> - 2016-04-01 14:52 -0600
Re: Drowning in a teacup? MRAB <python@mrabarnett.plus.com> - 2016-04-01 21:45 +0100
Re: Drowning in a teacup? Michael Selik <michael.selik@gmail.com> - 2016-04-01 20:46 +0000
Re: Drowning in a teacup? Steven D'Aprano <steve@pearwood.info> - 2016-04-02 09:46 +1100
Re: Drowning in a teacup? Fillmore <fillmore_remove@hotmail.com> - 2016-04-02 00:03 -0400
Re: Drowning in a teacup? Vito De Tullio <vito.detullio@gmail.com> - 2016-04-02 07:45 +0200
Re: Drowning in a teacup? Michael Selik <michael.selik@gmail.com> - 2016-04-02 05:51 +0000
Re: Drowning in a teacup? Vito De Tullio <vito.detullio@gmail.com> - 2016-04-02 08:26 +0200
Re: Drowning in a teacup? Peter Otten <__peter__@web.de> - 2016-04-02 12:31 +0200
Re: Drowning in a teacup? Mark Lawrence <breamoreboy@yahoo.co.uk> - 2016-04-02 12:53 +0100
Re: Drowning in a teacup? Michael Selik <michael.selik@gmail.com> - 2016-04-02 14:36 +0000
Re: Drowning in a teacup? Ned Batchelder <ned@nedbatchelder.com> - 2016-04-02 12:28 -0700
Re: Drowning in a teacup? Random832 <random832@fastmail.com> - 2016-04-02 15:54 -0400
Re: Drowning in a teacup? Steven D'Aprano <steve@pearwood.info> - 2016-04-03 12:33 +1000
Re: Drowning in a teacup? Ethan Furman <ethan@stoneleaf.us> - 2016-04-02 16:15 -0700
Re: Drowning in a teacup? Random832 <random832@fastmail.com> - 2016-04-02 19:19 -0400
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