两个程序代码

今天写了两个程序代码，一个是用户登录，一个是三级菜单的：

用户登录：

#!/usr/bin/env python
#Author: Tony Cabel

import os
import tab

users = [['xuande','123'],['mengde','qwe'],['zhongmou','123qwe']] 


for i in range(3):
    name = input("Account: ")
    pas  = input("Password: ")
    if [name,pas] in users:
        print('Account success. Welcome %s!'%name)
        break
    else:
        ism = 2 - i
        print("Invalid name or password. Please retry and left %s time"%ism)
        if i == 2:
            print("You lost there times. account is locked now")
        continue

　　

三级菜单：

#！/usr/bin/env python
#-*- coding:utf-8 -*-
#Author: Tony Cabel

menus = {
    '山东':{'德州':['陵县','乐陵','宁津','齐河','武城','禹城'],
                '济南':['天桥','历下','槐荫','历城','宋官庄'],
                '东营':['河口','利津','东城','西城']},
    '北京':{'朝阳':['金台路','双井','劲松','宋家庄'],
               '昌平':['天通苑','沙河','回龙观','龙泽'],
               '西城':['宣武门','复兴门','长椿街'],
               '海淀':['西二旗','五道口','上地','知春里']}
}

flag = False

while not flag:
    for item in enumerate(list(menus.keys())):
        index = item[0]
        pro = item[1]
        print(index,pro)
    print("Press 'e' to exit the program.")
    men = input("Which province do you select (press the before number)? ")
    if men.isdigit() and int(men) < len(menus):
        men1 = int(men)
        name = menus.keys()
        prov = list(menus.keys())[men1]
        while not flag:
            for items in enumerate(menus[prov]):
                ind = items[0]
                cit = items[1]
                print(ind,cit)
            print("Press the number to enter the next menu and press 'q' to quit the last menu.")
            cit_num = input("Which city do you select (press the before number)? ")
            if cit_num.isdigit() and int(cit_num) < len(list(menus[prov].keys())):
                cit_num1 = int(cit_num)
                city = menus[prov].keys()
                coun = list(menus[prov].keys())[cit_num1]
                while not flag:
                    for i in list(menus[prov][coun]):
                        print(i)
                    flo = input("Press 'q' to quit the last menu and press 'e' to exit the program.")
                    if flo == 'q':
                        break
                    elif flo == 'e':
                        exit("Good Bye".center(50,'-'))
                    else:
                        print("Please input according to the introduction.")
                        continue
            elif cit_num == 'q':
                break
            else:
                print("Please input according to the introduction.")
                continue
    elif men == 'e':
        exit("Good Bye".center(50,'-'))
    else:
        print("Please input according to the introduction.")
        continue