登陆系统
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=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 本帖最后由 新房客 于 2017-5-4 17:54 编辑
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')
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