usrpasswd

#!/usr/bin/pythondb = {}def newuser():prompt='login desired: 'while True:name = raw_input(prompt)if db.has_key(name):prompt='name take, try another: '

坚持到底cw

528人浏览 · 2014-05-13 17:41:55

坚持到底cw · 2014-05-13 17:41:55 发布

#!/usr/bin/python


db = {}


def newuser():
    prompt='login desired: '
    while True:
        name = raw_input(prompt)
        if db.has_key(name):
            prompt='name take, try another: '
            continue
        else:
            break
    pwd = raw_input('passwd: ')
    db[name]=pwd


def olduser():
    name = raw_input('login: ')
    pwd = raw_input('passwd: ')
    passwd = db.get(name)
    if passwd == pwd:
         print 'welcome back',name
    else:
        print 'login incorrect'


def showmenu():
    prompt="""
(N)ew user login
(E)xisting user login
(Q)uit
enter choice:  """


    done = False
    while not done:
        chosen = False
        while not chosen:
            try:
                choice = raw_input(prompt).strip()[0].lower()
            except (EOFError , KeyboardInterrupt):
                choice = 'q'
            print '\nyour picked: [%s]' % choice
            if choice not in 'neq':
                print 'invalid option,try again'
            else:
                chosen = True
        if choice == 'q':
            done =True
        if choice == 'n':
            newuser()
        if choice == 'e':
            olduser()


if __name__ == '__main__':
    showmenu()