[python] How do I check if a given Python string is a substring of another one?

I have two strings and I would like to check whether the first is a substring of the other. Does Python have such a built-in functionality?

This question is related to python string substring

The answer is


Try

isSubstring = first in theOther

string.find("substring") will help you. This function returns -1 when there is no substring.


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