python number_game.py wont run

import random

def game():
    # generate a random number between 1 and 10
    secret_num = random.randint(1,10)
    guesses = []

    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: 


            # compare guess to secret number
            if guess == secret_num:
                print("You got it! My number was {}".format(secret_num))
                break
            elif guess < secret_num:
                print("my number is higher than {}".format(guess))
            else:
                print("my number is lower than {}".format(guess))
            guesses.append(guess)
    else:
        print("you didn't get it! My number was {}".format(secret_num))
    play_again = input("Do you want to play again? Y/n")   
    if play_again.lower() != 'n':                   
        game()
    else:
        print("Bye!")