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From: Laura Creighton <lac@openend.se>
Newsgroups: comp.lang.python
Subject: Re: filter a list of strings
Date: Thu, 03 Dec 2015 10:53:16 +0100
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Comments: In-reply-to <c.buhtz@posteo.jp> message dated "Thu, 03 Dec 2015 10:27:19 +0100."
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In a message of Thu, 03 Dec 2015 10:27:19 +0100, c.buhtz@posteo.jp writes:
>Thank you for your suggestion. This will help a lot.
>
>On 2015-12-03 08:32 Jussi Piitulainen <harvesting@is.invalid> wrote:
>> list =3D [ item for item in list
>>          if ( 'Banana' not in item and
>>               'Car' not in item ) ]
>
>I often saw constructions like this
>  x for x in y if ...
>But I don't understand that combination of the Python keywords (for,
>in, if) I allready know. It is to complex to imagine what there really
>happen.
>
>I understand this
>  for x in y:
>    if ...
>
>But what is about the 'x' in front of all that?

This is a list comprehension.
see: https://docs.python.org/2/tutorial/datastructures.html#list-comprehen=
sions

But I would solve your problem like this:

things_I_do_not_want =3D ['Car', 'Banana', <add all of them here>]
things_I_want =3D []

for item in list_of_everything_I_started_with:
    if item not in things_I_do_not_want:
       things_I_want.append(item)

Laura