Guess-the-number script for teaching programming

GuessTheNumber.py

print('I am thinking of a number between 1 and 20...')

import random
secret_number = random.randint(1, 20)

tries = 0
winner = False

while tries < 6 and not winner:

    guess = input('Take a guess: ')
    guess_number = int(guess)

    tries = tries + 1

    if guess_number < secret_number:
        print('You guessed too low')

    if guess_number > secret_number:
        print('You guessed too high')

    if guess_number == secret_number:
        winner = True


if winner:
    print('You win!')
else:
    print('Your 6 tries are up... You lose!')