[已解决]登陆系统

hsjs1002

user={}
def main():
    while True:
        print('|---New user:N/n---|')
        print('|---login in:E/e---|')
        print('|---  Quit: Q/q ---|')
        command=input('|---Plese enter the conmmand:')
        if command == 'n' or 'N':
            register()
        elif command == 'e' or 'E':
            login_in()
            

        elif command == 'Q' or 'q':
            qt()
        else:
            print('Please enter the right command .')
            continue








def register():
    name=input('Please enter the user\'s name:')
    if name in user:
        print('This name has been used,please try another one.')
    else:
        password=input('Please enter the password:')
        user[name]=password
        print('Registration succeed, try to login in^_^')

def login_in():
    name1=input('Please enter your name:')
    if name not in user:
        name=input('The name you entered does not exiset,please try again:')
    else:
        password=input('Please enter your password:')
        pwd=user.get(name)
        if pwd == password:
            print('Welcome to this system.')
        else:
            print('The password is not correct.')
def qt():
    print('You have quited the system, hope your next visit.')

main()
   
            


   
求助各位大神    错误在哪，现在新建用户的时候，不管输入的指令是不是n或N，程序都会进行下一步

最佳答案

月排行榜 / 总排行榜

新房客

2017-5-4 17:50:17

if command == 'n' or 'N' 相当于 if command == ‘n’or if 'N'
所以它总是对的，然后会执行register()。应当修改为：if (command == 'n') or (command == 'N')

跳转到最佳答案楼层

新房客

if command == 'n' or 'N' 相当于 if command == ‘n’or if 'N'
所以它总是对的，然后会执行register()。应当修改为：if (command == 'n') or (command == 'N')