Python Question! Pls use notes on each step so I can comprehend whats going on. Show your code is running and how you defined it. Thanks for all your help!!!

lettersOnly (s) Write the function lettersOnly (s) that takes in a string called s, and returns a string containing only the alphabetic characters of s. (For more information on how this can be done look at the Python documentation on String Methods found here: https://docs.python.org/3/library/stdtypes.html#string methods Sample Inputs Sample Outputs S = "CS103 is kind of fun." Siskindoffun" "Spaces and punctuation Spacesandpunctuationdontcount" don't count!" 9 - This is Hw3" ThisisHw" 9