Python-сообщество

import random

# lets collect cows and bulls
def cowsandbools(secret, guess):
    bulls = []
    cows = []
    for i in range(len(secret)):
        digit = guess[i]
        if secret[i] == digit:
            bulls.append(digit)
        elif digit in secret:
            cows.append(digit)
    return bulls, cows

print  "===Lets start the game==="
secret = random.sample('0123456789', 4)
count = 1
while True:
    guess = list(raw_input("Try to guess the number: "))
    if len(set(guess)) != len(secret):
        print "Write the number correctly"
        continue

    if secret == guess:
        print "=========Congratulations, you win in:", count , " turns========="
        print "=========Your number was:", secret, "========="
        if count > 7:
            print "=========I am sure you can do better========="
        else:
            print "==========It is a very good result=========="
        break
    else:
        bulls, cows = cowsandbools(secret, guess)
        print len(bulls), " Bulls and ", len(cows), " Cows"
    count += 1