python 이거 어떻게 고치냐?

b=''

score=0

jackpot=0

def generate():
    count=0
    list2=[]

    while 1:
        import random
        z=random.randrange(0,10)
        list2.append(z)
        count=count+1

        if count==3:
            a=''
            for k in list2:
                a=a+str(k)+' '
                global b
                b=b+a
            return a


def matching(b):


    if b[6]==b[8] or b[6]==b[10] or b[8]==b[10]:

        if b[6]==b[8] and b[8]==b[10]:

            if b[6]==7:
                number=5
                global score
                score=score+5
                global jackpot
                jackpot=jackpot+1

                return number

            else:
                global score
                score=score+2
                number=2
                return number


        else:
            global score
            score=score+1
            number=1
            return number


    else:
        number=0
        return number


def print_result(score,jackpot):
    z=print('점수 :',score,'잭팟 횟수 :',jackpot)
    return z


while 1:
    print('뽑힌 숫자 :',generate())
    print('얻은 점수 :',matching(b))
    z=input('그만하시겠습니까? : ')

    if z=='n':
        b=''
        continue

    elif z=='y':
        print_result(score,jackpot)
        break