Nov 17, 2021 · Python Replace Substring. Syntax : The replace() is a Python built-in function that returns a string copy with all occurrences of a substring replaced with another substring. It returns a string copy with all occurrences of a substring replaced by another substring. string.replace(old, new, count)
In Python, while operating with String, one can do multiple operations on it. Let's see how to iterate over characters of a string in Python. Example #1: Using simple iteration and range()