三次密码输入

num = 0
while num < 3:
    Name = input('请输入账号： ')
    Passwd = input('请输入密码：')
    if Name == 'kebi' and Passwd == '123':
        print('登陆成功。')
        break
    else:
        print('你还有%d登陆机会' % (2-num))
        if 2-num == 0:
            Next = input('你还想再试试吗：Y or N')
            if Next == 'Y':
                num = 0
                continue
            else:
                print('期待与您再次相遇')
    num +=1

 下面是修改之后：

number = 0
while number <3:    #多次输入，肯定要循环
    Name = input('name： ')   #账号密码肯定要交互
    Passwd = input('passwd: ')
    if Name == 'kebi' and Passwd == '123':
        print('welcome.')
        break
    else:                     #密码不正确之后，没有到0次机会之前打印
        if number == 2:
            print("You have entered the error three times")
            asc = input('You want to try again? you can enter Y to continue:').lower()
            if asc == 'y':
                number = 0
                continue
            else:
                print('Looking forward to meeting with you')
        else:
            print('you have %d choice' % (2 - number))
    number +=1