how to remove an item from a list in python if that item contains a word

Question

I have a list

a = ['https://example.co/embed/qACAB6TukkU/The.Ha-az.VOST.WEBRip.XviD-ZT.W.avi',
     'https://example.co/embed/l31lsZilT2E/The.Ha-az-ndmaids.FR.HDTV.XviD-ZT.W.avi',
     'https://example.com/embed/soslnnqnmccmplfa/The_Ha-az02_VOST_WEBRip_XviD-ZT_W_avi',
     'https://example.com/embed/pffpmptfpdfqddap/The_Ha-az-_Tale_S2_FRENCH_HDTV_XviD-ZT_W_avi']

I want to remove every item in that list that contain word "VOST" in the link. This what I know and what I have tried:

a.remove('VOST')
print a

Possible duplicate of [Removing elements from a list containing specific characters](https://stackoverflow.com/questions/3416401/removing-elements-from-a-list-containing-specific-characters) — AGN Gazer, May 28 '18 at 02:08

niraj · Accepted Answer · 2018-05-28T01:35:29.290

You can try iterating through each item and filtering it using list comprehension:

filtered = [i for i in a if 'VOST' not in i]

The above code is similar and better way to following:

filtered = []
for i in a:
    if 'VOST' not in i:
        filtered.append(i)

If you want to use remove, you can iterate through each item and check if word to look for is in item and then remove item. You can try the code below:

Note: This will remove the item from original list, the previous answer creates new list named filtered:

for i in a:
    if 'VOST' in i:
        a.remove(i)

score 0 · Answer 2 · answered May 28 '18 at 01:50

0

I am a beginner but I don’t think it will work to use a.remove, since removing an item from the list will screw up the indexing for future items. It’s a better solution to create a new list and append items that don’t contain ‘VOST’.

answered May 28 '18 at 01:50

Sheela Singla

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One actually can remove items in place - see my answer. You just need to iterate in the reverse order. – AGN Gazer May 28 '18 at 02:21

AGN Gazer · Answer 3 · 2018-05-28T02:28:39.157

0

If you do want to remove items in-place then the following might work for you:

for i in [i for i, v in enumerate(a) if 'VOST' in v][::-1]:
    del a[i]

Alternatively,

for i in reversed([i for i, v in enumerate(a) if 'VOST' in v]):
    del a[i]

or,

for i in reversed(range(len(a))):
    if 'VOST' in a[i]:
        del a[i]

edited May 28 '18 at 02:28

answered May 28 '18 at 02:19

AGN Gazer

8,025
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score 0 · Answer 4 · answered May 28 '18 at 02:43

0

How about

filter(lambda x: "VOST" not in x, a)

answered May 28 '18 at 02:43

innisfree

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how to remove an item from a list in python if that item contains a word

4 Answers4