Number Guessing Game

import random
import sys

def playAgain():
    choice = raw_input("\nDo you want to play again? 'Y' / 'N': \n")
    if(choice == "Y"):
        playGame()
    else:
        sys.exit()

def playGame():
    number = random.randint(1, 100)
    guesses = 4
    while(guesses > 0):
        guess = int(raw_input("\nGuess a whole number between 1 and 100: "))
        if(guess == number):
            print("\nYou guessed correctly!")
            guesses = -1
        elif(guess < number):
            print("Your guess was too low. " + str(guesses) + " tries left. Guess again: \n")
            guesses -= 1
        elif(guess > number):
            print("Your guess was too high " + str(guesses) + " tries left. Guess again: \n")
            guesses -= 1

playGame()
playAgain()