Re: filter a list of strings

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From	Sivan Greenberg <sivan@vitakka.co>
Newsgroups	comp.lang.python
Subject	Re: filter a list of strings
Date	Wed, 9 Dec 2015 16:35:23 +0200
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That might also work:

new_list = [i for i in the_list if i not in targets]
# given you have no special requirements for the selection
# out of 'targets'

-Sivan

On Wed, Dec 9, 2015 at 12:58 AM, Thomas 'PointedEars' Lahn <
PointedEars@web.de> wrote:

> Mark Lawrence wrote:
>
> > On 03/12/2015 01:15, c.buhtz@posteo.jp wrote:
> >> I would like to know how this could be done more elegant/pythonic.
> >>
> >> I have a big list (over 10.000 items) with strings (each 100 to 300
> >> chars long) and want to filter them.
> >>
> >> list = .....
> >> […]
> >
> > targets = ['Banana', 'Car'...]
> > for item in list[:]:
> >      for target in targets:
> >          if target in item:
> >              list.remove(item)
> >
> >> btw: Is it correct to iterate over a copy (list[:]) of that string list
> >> and not the original one?
> >
> > Absolutely :)
>
> However, “list” is a built-in class/constructor that would be overwritten
> this way.  One should choose another identifier than “list” for one’s
> variables.
>
> --
> PointedEars
>
> Twitter: @PointedEars2
> Please do not cc me. / Bitte keine Kopien per E-Mail.
> --
> https://mail.python.org/mailman/listinfo/python-list
>



-- 
Sivan Greenberg
Co founder & CTO
Vitakka Consulting

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Thread

Re: filter a list of strings Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-12-03 12:28 +0000
  Re: filter a list of strings Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-12-08 23:58 +0100
    Shadowing built-ins [was Re: filter a list of strings] Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-12-09 18:38 +1100
    Re: filter a list of strings Sivan Greenberg <sivan@vitakka.co> - 2015-12-09 16:35 +0200

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