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()