re

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sub
content	re.sub(pattern, repl, string, count=0, flags=0): Return the string obtained by replacing the leftmost non-overlapping occurrences of pattern in string by the replacement repl.
parents	leetcode/problems/1071_GCD_of_strings, python/docs/stdlib/re
hyperlink	https://docs.python.org/3/library/re.html#re.sub