python: filter a nested list of strings with list comprehension

Question

I am trying to use list comprehension to filter this list:

inp = [['Fire 46.0.1', 'vlc 2.2.3','opt 0.9.9.10'],
       ['opt 0.9.9.11', 'notepad 6.9', 'adobe. 6.9', 'vlc 2.3.3']]

into

out = [['Fire 46.0.1', 'vlc 2.2.3',],
       ['notepad 6.9', 'adobe. 6.9', 'vlc 2.3.3']]

i.e. removing all the strings that start with 'opt'. I am trying something like

[soft for ls in inp if soft not soft.startswith('opt')]

But something is wrong with the syntax. Any help?

Moses Koledoye · Accepted Answer · 2016-06-01 12:22:45Z

3

This should do:

[[s for s in item if not s.startswith('opt')] for item in inp ]

Use startswith to filter out items with opt from the sublists

answered Jun 1, 2016 at 12:22

Moses Koledoye

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Comments

Muhammad Tahir · Accepted Answer · 2016-06-01 12:23:42Z

2

You need a nested list comprehension for filtering a nested list.

[[y for y in x if not y.startswith('opt')] for x in inp]

answered Jun 1, 2016 at 12:23

Muhammad Tahir

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