try except else bug in Number Game Refinement program in Python Basics

I think I found a bug in the Number Game Refinement program in Python Basics.

Kenneth suggets the following code:

while len(guesses) < 5:
  try:
    #get a number guess from the player
    guess = int(input("Guess a number between 1 and 10: "))
  except ValueError:
    print("{} isn't a number!".format(guess))
  else:
    #game stuff happens

Now when I try to input a non-number as my first input, I get an error saying that local variable guess is referenced before being assigned. That's because parsing my input as int fails so guess gets no value... but the except references it. For this same reason, if I input any number (say 2) and then input a letter (say "a"), the output will be "2 isn't a number!" because the variable guess still has 2 as a value.

This is how I changed it:

while len(guesses) < 5:
  guess = input("Guess a number between 1 and 10: ")
  try:
    guess = int(guess)
  except ValueError:
    print("{} isn't a number!".format(guess))
  else:
    #game stuff happens

This way I'm going to get the input from the player regardless; if Python can parse it to an int then we are fine; otherwise we catch the exception, parse it to string and print the message to the player.