修复后的程序

import random

number = random.randint(0, 9) # 将范围修改为 0-9，符合规则

for i in range(3): choice = int(input('Please input your number: '))

if choice > number:
    print('The right number is smaller')
elif choice < number:
    print('The right number is bigger')
else:
    print('You get the right number')
    print(f'You already used {i + 1} chances')
    break

else: # 将 else 放在 for 循环后面，符合规则 print('You failed!')

运行结果示例

Please input your number: 5

The right number is bigger

Please input your number: 8

The right number is smaller

Please input your number: 6

You get the right number

You already used 3 chances