python允许输错3次函数怎么写

import random

def cm():

    x = int(input("请输入一个十以内的整数："))

    z = random.randint(0, 10)

    a = 1

    while True:

        if x == z:

            print("恭喜您，猜对了！")

            break

        if x < z:

            print("你输入的数小了一点")

        if x > z:

            print("您输入的数大了一点")

        if a == 3:

            break

        print("您还有%s次机会哟" % (3-a))

        x = int(input("请输入一个十以内的整数："))

        a += 1

    if x != z:

        print("对不起，您已经没有机会了！")

cm()