Create Longest Palindromic Substring.py

[Nitin320]

[geekygirl8]

Rules ⚔️ Add link of the problem as comments in the code if contributing solution of any problems from Leetcode, GeekForGeeks, Codechef or Codeforces, etc. No need to add entire main function. ⚔️ Dont forget to star this repository and follow me for successful merge. ⚔️ Please put your Name and Github id as comments at top of the code file to get accepted. ⚔️ Add the proper extension to your code file. Examples: .c, .js, .cpp , .py or .java. ⚔️ Give your file a proper name related to your program in snake_case. ⚔️ Put your files in correct folder like .cpp file in c++ folder or .py file in python folder. ⚔️ If folder is not present for your language create new with name of your programming language like C++ , Python etc ⚔️ Make repo well maintained if topic not present in which you want to contribute create new folder for it in their paricular section or language.