Why is this only returning some of the items?
lst = ["!apple", "!green", "!blue", "one"]
new_list = [lst.pop(idx) for idx,i in enumerate(lst) if i.startswith("!")]
print(new_list)
Returns:
['!apple', '!blue']
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M4cJunk13
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2don't modify a list while iterating on it – Jean-François Fabre Nov 13 '20 at 09:37
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1Yes, collections should not be mutated during iteration. Note that others have raised concerns that Python documentation is not clear enough on this matter. Ref: https://bugs.python.org/issue32767 – Attila Viniczai Nov 13 '20 at 09:40
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Interesting and thank you. I wasn't aware of this. – M4cJunk13 Nov 13 '20 at 09:42