What's the difference between the itertool takewhile and the filter module? They seem to be the same thing

Answer 1

filter scans the whole iterator for elements matching the condition. itertools.takewhile stops the moment it finds an element that doesn't fit the condition. Demo code:

from itertools import takewhile

my_list = [1, -2, 3, -4, 5, -6]

print(list(takewhile(lambda x: x>0, my_list))) # outputs [1]
print(list(filter(lambda x: x>0, my_list))) # outputs [1, 3, 5]

Answer 2

You're very welcome, Vlad Cretu ! 😊

I saw that you've only been here a week. You're a fast learner! Good for you 👌

Answer 3

Aaaa, ok I understand now. Thank you :)

Answer 4

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