Class a:
  def cow_bull(self):
        import random
        cowbull = [0,0]
        count = 1
        x = random.sample([1,2,3,4,5,6,7,8,9,0],4)
        y = list(input('input 4 digits seperated by spaces \n '))
        while x != y:
            for i in range(3):
                if y[i] in x:
                    if y[i] == x[i]:
                        cowbull[0] += 1
                    else:
                        cowbull[1] += 1
            print '{0} cows and {1} bulls'.format(cowbull[0], cowbull[1])
            y = list(input('input 4 digits seperated by comma \n '))
            cowbull = [0, 0]
            count += 1
        print 'you won with {0} guesses'.format(count)

if __name__ == '__main__':
    a = A()
    a.cow_bull()