CODEWITHSUNDEEP
python-3.x
Alwina
Alwina

Reputation: 1

how to remove elements from one list if other list contain the indexes of the elements to be removed

I have two lists - lista = [1,2,3,5,0,5,6,0] listb = [4,7]

listb contains index numbers. How can I remove index 4 and 7(contained in lisb) from lista.

I thus want to print new_lista as [1,2,3,5,5,6]

I hope it makes sense.

Alwina

Upvotes: 0

Views: 70

Answers (2)

shantanoo
shantanoo

Reputation: 3705

You may try following.

for x in sorted(listb,reverse=True): lista.pop(x)

Also you may need to make sure that listb does not contain duplicate index and all the index numbers are valid index.

for x in sorted(set([y for y in listb if -1 < y < len(lista)]),reverse=True): lista.pop(x)

Upvotes: 1

ecatmur
ecatmur

Reputation: 157314

Use enumerate:

new_lista = [j for i, j in enumerate(lista) if i not in listb]

Upvotes: 0

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