CODEWITHSUNDEEP
pythonarrays
Ryan Sayles
Ryan Sayles

Reputation: 3431

Delete array values in python

I have a simple question, if I have an array of strings in python: ['a', 'b', 'c', 'd'] is there a way that I can compare another string and if it exists in the array delete that value and everything after it? I'm new to python and I'm not too familiar with the syntax but pseudocode:

s = 'b'
array = ['a', 'b', 'c', 'd']

if b exists in array
    remove b and elements after

so the new array would simply be ['a']. Any help would be much appreciated!

Upvotes: 2

Views: 5493

Answers (2)

wflynny
wflynny

Reputation: 18521

s = 'b'
array = ['a', 'b', 'c', 'd']

if s in array:
    del array[array.index(s):]

Upvotes: 7

rlms
rlms

Reputation: 11060

Alternatives:

from itertools import takewhile
array = takewhile(lambda x: x != "b", array)
# then if array must be a list (we can already iterate through it)
array = list(array)

or

if "b" in array:
    del array[array.index("b"):]

or

try:
    del array[array.index("b"):]
except ValueError:
    # "b" was not in array
    pass

Upvotes: 2

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