replace() in Python to replace a substring Last Updated : 31 Jan, 2025 Summarize Comments Improve Suggest changes Share Like Article Like Report replace() method in Python allows us to replace a specific part of a string with a new value. It returns a new string with the change without modifying the original one. We can also specify how many times the replacement should occur.For Example: Python s = "hlo AB world" # Replace "AB" with "C" in `s` res = s.replace("AB", "C") print(res) Outputhlo C world Table of ContentSyntax of replace()Removing extra spaces by using replace()Converting a date formatSyntax:str.replace(pattern,replaceWith,maxCount)Parameters:pattern: This specify string that we want to search for.replaceWith: This specify string we want to replace the old value with.maxCount: This specify how many times we want to replace something. If we don't set it then all occurrences will be replaced.Removing extra spaces by using replace()It means replacing multiple spaces between words with a single space or completely removing them to clean up the text. Python s = "Geeks For Geeks" # Replacing all spaces with an empty string res = s.replace(" ", "") print(res) OutputGeeksForGeeks Converting a date formatWe can use replace() to convert a date format from one style to another. Python # Backend date format date = "2025-01-21" # Converting the date format to DD/MM/YYYY res = date.replace("-", "/").split("/") res = f"{res[2]}/{res[1]}/{res[0]}" print(res) Output21/01/2025 Comment More infoAdvertise with us Next Article replace() in Python to replace a substring S Shashank Mishra Follow Improve Article Tags : Python python-string Practice Tags : python Similar Reads Python Tutorial - Learn Python Programming Language Python is one of the most popular programming languages. 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