Guess the number

import random

randomNumber = random.randint(1, 20)
print('I am thinking of a number between 1 and 20. Try to guess the number!')

guess = 0
tries = 0

while int(guess) != randomNumber:
    guess = input()
    if int(guess) < randomNumber:
        tries = tries + 1
        print('Your guess is too low. Try again!')
    elif int(guess) > randomNumber:
        tries = tries + 1
        print('Your guess is too high. Try again!')
if int(guess) == randomNumber:
    tries = tries + 1
    print('Congratulations! You guessed the number in ' + str(tries) + ' tries!')