Python s12 Day1 笔记及作业

作业一：

• 输入用户名密码
• 认证成功后显示欢迎信息
• 输错三次后锁定

python3代码 :

# -*- coding:utf-8 -*-
input_name = input("Please input your user name : ").strip()
user_lockfile = open("user_lockfile.txt","r+")
user_file = open("user_file.txt")
user_list = user_file.readlines()

for i in range(3):
    input_passwd = input("Please input your password : ").strip()
    #查找被锁用户列表判断是否被锁住
    if input_name in [locked_user.rstrip() for locked_user in user_lockfile.readlines()]:
        print("Sorry, your account is locked!")
        user_file.close()
        user_lockfile.close()
        exit(1)
    else: #没有被锁住，查找用户列表
        if input_name not in [user_record.split()[0] for user_record in user_list]:
            print("Sorry, your account doesn't exist!")
            user_file.close()
            user_lockfile.close()
            exit(2)
        else: #用户存在，判断密码是否正确，正确跳出循环
            input_record = input_name + ' ' + input_passwd
            if input_record in [user_record.rstrip() for user_record in user_list]:
                print("Logging in...")
                user_file.close()
                user_lockfile.close()
                exit(0)
            else:#密码不正确，判断错误次数，错误三次（i=2）将用户锁住
                if i == 2:
                    user_lockfile.write(input_name + "\n")
                    print("Sorry, you're locked!")
                    user_file.close()
                    user_lockfile.close()
                    exit(3)
                else:#剩余机会数 2-i
                    chance = 2 - i
                    print("Wrong password! %s chances left!" % chance)

userfile：

wayne 123
root shroot123

user_lockfile：

kevin
james
root

作业二：

• 三级菜单
• 可以此选择进入各子菜单
• 所需知识点：列表、字典

python3代码：

 # -*- coding:utf-8 -*-
 import time
 import os

 DICT_PRO = {"北京":["大兴区","朝阳区","海淀区","东城区","西城区","丰台区","通州区"],
             "上海":["静安区","徐汇区","浦东新区","虹口区","普陀区","长宁区","宝山区","嘉定区","闵行区"],
             "山东省":["烟台市","济南市","青岛市"],
             "辽宁省":["大连市","沈阳市"],
             "香港":None,
             "澳门":None,
             "台湾":["台北市"]}
 DICT_CIT = {"烟台市":["莱山区","芝罘区","福山区","龙口市"],
             "青岛市":["李沧区","台东区","崂山区"],
             "济南市":["市中区","天桥区","历城区"],
             "大连市":["中山区","甘井子区","沙河口区","高新园区"],
             "沈阳市":["皇姑区","大东区","和平区","铁西区"]}

 #将输入的数字转化成整数形式
 def input_verify(choice):
     if str.isdigit(choice):
         choice = int(choice)
     return choice

 #输出框架
 def framework_show(province='', city='', district=''):
     os.system('cls')   #清屏
     print('''
 ######################################################
 *                                                    *
 *          欢迎进入省市区查询系统                    *
 *                                                    *
 ######################################################
 *                                                    *
 *          省份 : %s  城市 : %s  区 : %s
 *                                                    *
 ######################################################
     ''' % (province, city, district))

 #展示欢迎界面
 def welcome_show(province='', city='', district=''):
     print('''
 ######################################################
 *                                                    *
 *            Welcome to %s %s %s
 *                                                    *
 ######################################################
     ''' % (province, city, district))

 #从省份字典，提取省份以及直辖市展示
 def province_show():
     global DICT_PRO
     global P_NAME
     global C_NAME
     global D_NAME
     global C_FLAG

     province_dict = {}
     #遍历省份字典，提取省份并添加编号输出展示
     for (n, p) in enumerate(DICT_PRO, 1):
         province_dict[n] = p
         print('%d.%s' % (n, p) + '\t', end='')
         if(n % 4 == 0):
             print()
     print('\n================================================================')
     print('q : Exit')
     province_input = input('请输入省份编号或省份名称 : ')
     province_input = input_verify(province_input)
     if province_input == 'q':
         exit(0)
     elif province_input in province_dict.keys(): #输入的是数字编号，对全局省份赋值
         P_NAME = province_dict[province_input]
     elif province_input in province_dict.values():#输入的是省份名称
         P_NAME = province_input
     else:
         P_NAME = ''    #其他输入，提示输入错误
         print("Wrong Input!")
         time.sleep(2)

     while P_NAME:
         framework_show(P_NAME, C_NAME, D_NAME)  #调用框架
         if type(DICT_PRO[P_NAME]) is list:  #若省份后有城市列表，调用城市展示函数
             city_show(P_NAME)
             if C_FLAG == 'b':
                 break
         else:  #若省份后无城市，直接调用展示函数
             welcome_show(P_NAME)
             time.sleep(5)
             P_NAME = ''
             break

 #传入省份，展示城市列表
 def city_show(province):
     global DICT_PRO
     global DICT_CIT
     global P_NAME
     global C_NAME
     global D_NAME
     global C_FLAG
     global D_FLAG

     city_list = DICT_PRO[province]
     city_dict = {}
     for (n, c) in enumerate(city_list, 1):
         city_dict[n] = c
         print('%d.%s' % (n, c) + '\t', end='')
         if (n % 4 == 0):
             print()
     print('\n================================================================')
     print('q : Exit    b : Back')
     city_input = input('请输入城市编号或城市名称:')
     city_input = input_verify(city_input)

     if city_input == 'q':
         exit(0)
     elif city_input == 'b':
         (P_NAME, C_NAME, C_FLAG) = ('', '', 'b')
         return
     elif city_input in city_dict.keys():
         city_name = city_dict[city_input]
         (P_NAME, C_NAME, C_FLAG) = (province, city_name, '')
     elif city_input in city_dict.values():
         city_name = city_input
         (P_NAME, C_NAME, C_FLAG) = (province, city_name, '')
     else:
         print("Wrong Input!")
         C_NAME = ''
         time.sleep(2)

     while C_NAME:
         framework_show(P_NAME, C_NAME, D_NAME)
         if C_NAME in DICT_CIT.keys():  #若所选城市在城市及区字典中有记录
             district_show(P_NAME, C_NAME) #调用城区展示函数展示城区
             if D_FLAG == 'b':
                 break
         else:
             welcome_show(P_NAME, C_NAME)  #若所选城市在城区字典中无记录，调用展示函数
             time.sleep(5)
             C_NAME = ''  #展示后将城市清空，回到选择城市界面
             break

 #传入省份和城市，展示相关地区
 def district_show(province, city):
     global DICT_PRO
     global DICT_CIT
     global P_NAME
     global C_NAME
     global D_NAME
     global D_FLAG

     district_dict = {}
     district_list = DICT_CIT[city]
     for (n, d) in enumerate(district_list, 1):
         district_dict[n] = d
         print('%d.%s' % (n, d) + '\t', end='')
         if (n % 4 == 0):
             print()
     print('\n================================================================')
     print('q : Exit    b : Back')

     district_input = input('请输入区名或编号:')
     district_input = input_verify(district_input)

     if district_input == 'q':
         exit(0)
     elif district_input == 'b':
         (P_NAME, C_NAME, D_NAME, D_FLAG) = (province, '', '', 'b')
         return
     elif district_input in district_dict.keys():
         district_name = district_dict[district_input]
         (P_NAME, C_NAME, D_NAME, D_FLAG) = (province, city, district_name,'')
     elif district_input in district_dict.values():
         district_name = district_input
         (P_NAME, C_NAME, D_NAME, D_FLAG) = (province, city, district_name,'')
     else:
         (P_NAME, C_NAME, D_NAME, D_FLAG) = (province, city, '', '')
         district_name = ''
         print("Wrong Input!")
         time.sleep(2)

     if district_name:      #若选中了城区，调用展示函数
         welcome_show(P_NAME, C_NAME, D_NAME)
         time.sleep(5)
         D_NAME = ''  #展示后将城区清空，将回到城区选择界面

 P_NAME=''   #省份全局变量
 C_NAME=''   #城市全局变量
 D_NAME=''   #城区全局变量
 C_FLAG=''   #城市选择页面输入b选项
 D_FLAG=''   #城区选择页面输入b选项

 while True:
     framework_show(P_NAME, C_NAME, D_NAME)
     province_show()