CODEWITHSUNDEEP
pythonlist
yodish
yodish

Reputation: 763

find a piece of a string in a list and replace

I've come across posts that demonstrate how to find a string in a list and replace, but i'm having difficulty generalizing the search to only a piece of a string.

For example

listX = ['color green', 'shape circle', 'above t']

I'd like to find all strings that begin with 'above', i've been able to do some minimal searching of a list using any and leaving the following space 'above ' but I can't figure out how to replace what I find.

Output i'm trying to create would be:

['color green', 'shape circle', 'above']

I'd also like to figure out how to remove a string that begins with 'above' from the list all together.

Upvotes: 1

Views: 107

Answers (3)

ipramusinto
ipramusinto

Reputation: 2648

Another alternative:

for idx, item in enumerate(listX):
    if item.startswith('above'):
        listX[idx] = 'above'

After that, we will have one or more 'above's, then we can remove them all.

while listX.count('above') > 0:
    listX.remove('above')

Upvotes: 1

vitoriahmc
vitoriahmc

Reputation: 41

I'm not sure if this is what you are looking for, but this worked for me, it printed:

['color green', 'shape circle', 'whatever you want']

listX = ['color green', 'shape circle', 'above t']

for i in range(len(listX)):

    splitting = listX[i].split(' ')
    if splitting[0] == 'above':
        listX[i] = 'whatever you want'

print(listX)

Upvotes: 3

AGN Gazer
AGN Gazer

Reputation: 8378

['above' if x.startswith('above') else x for x in listX]

If you would like to remove all strings that start with 'above' then you can do something like what @JonClements mentioned in comments:

[x for x in listX if not x.startswith('above')]

Alternatively:

from itertools import filterfalse
list(filterfalse(lambda x: x.startswith('above'), listX))

Upvotes: 6

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