puthon code

String Changes Have the function StringChanges (str) take the str parameter being passed, which will be a string containing letters from the alphabet, and return a new string based on the following rules. Whenever a capital Mis encountered, duplicate the previous character (then remove the M), and whenever a capital N is encountered remove the next character from the string (then remove the N). All other characters in the string will be lowercase letters. For example: "abcNdgM" should return "abcgg". The final string will never be empty. Examples Input: "MrtyNNgMM" Output: rtyg88 Input: "OMOMkKNEEN" Output: ooookkr