USE PYTHON ONLY!!! NOT JAVA or anything else :)

Function name : contains_substring Parameters : string (string), substring (string) Returns: bool Description : If the substring is entirely contained within the string, then return True, otherwise return False. An empty substring will always return False. The substring may be longer than the string. You are not allowed to just write if substring in string.

REMEMBER TO USE PYTHON ONLY! Not java or anything else.