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our_list = ["2121","eew3232", "32d-3", "(32"]
new_lst = [item for item in our_list if item.isdigit()]
print(new_lst)

Success #stdin #stdout 0.02s 9080KB

stdin

Standard input is empty

stdout

['2121']

https://ideone.com/GuAMrj

language:

Python 3 (python 3.12)

created:

visibility:

public

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