#real password is "password"

_KEY = 347

def encrypt(string):
    secret = hash(string) % 540
    return secret

chances = 3

def ask_for_password():
    secret = encrypt(raw_input("What is your password, please? "))
    if secret == _KEY:
        print "Congratulations, you entered the right password."
    else:
        print "Wrong password."
        global chances
        chances = chances - 1
        if chances > 0:
            ask_for_password()
        else:
            print "You have been locked out of the system."

ask_for_password()