Question

如何使这段代码再次启动while循环，直到用户输入正确的密码为止？

userPassword =input('parola;')
userPasswordId = input('parola')
counter = 0
while userPasswordId != userPassword and counter < 3:
    print('Sorry the password is incorect.Try again!')
    counter = counter + 1
    print('You have', 3 - counter, 'attempts left.')
 userPasswordId = input('Enter your password:')
if counter == 3:
    print('Your account is locked for 30 seconds!!!!!')
    import time
    sec = 0
    while sec != 5:
        print('>>>>>>>>>>>>>>>>>>>>>', sec)
    # Sleep for a sec
        time.sleep(1)
    # Increment the minute total
        sec += 1

Answer 1

这称为异步编程。它已在Python中使用async和await关键字引入。

import asyncio 
async def allowInput():
    await asyncio.sleep(30000) #ms
    # your code goes here

Answer 2

您只需要将那条if counter == 3行及其下面的代码块移到while循环中即可。

为了改善用户看到的消息流，我还对代码进行了一些重构。

这是一个例子：

import time


userPassword =input('parola;')
counter = 0

while True:
    userPasswordId = input('Enter your password:')
    if userPasswordId != userPassword:
        print('Sorry the password is incorect.Try again!')
        counter += 1
        print('You have', 3 - counter, 'attempts left.')
    else:
        break

    if counter == 3:
        counter = 0
        print('Your account is locked for 30 seconds!!!!!')
        sec = 0
        while sec != 5:
            print('>>>>>>>>>>>>>>>>>>>>>', sec)
        # Sleep for a sec
            time.sleep(1)
        # Increment the minute total
            sec += 1

此代码将继续循环，直到用户输入正确的密码为止，此时它将break执行循环。

如何在计时器后重新开始循环？

2 个答案: