I'm working on a Hangman game in Python and I need user validation for the input, which I have made an attempt at, but I don't know why its not working.

My task was to have "error" messages for 1. empty input, 2. non-integer, non-empty input, 3. index out of range input. By index out of range, I mean that I am asking the user for an integer from 0-9 to select a word from the list already in the program.

```
def getLetterFromUser(totalGuesses):

  while True:
      userInput = input("\nPlease enter the letter you guess:")
      if userInput == '' or userInput == ' ':
          print("Empty input.")
      elif userInput in totalGuesses:
          print("You have already guessed that letter. Try again.")
      elif userInput not in 'abcdefghijklmnopqrstuvwxyz':
          print("You must enter an alphabetic character.")
      else:
          return userInput

```

For clarity's sake, the subsequent call to getLetterFromUser is in a while loop so that it repeatedly checks these conditions.

EDIT: I took out what didn't belong. Thank you. My problem, however, is that it still tells me the input isn't in alphabet, when it is. And the length of the input(a single char) is 2, which doesn't make sense unless it counts the null character.