Python第四天课后作业

设计一个用户管理系统

#!/usr/bin/env python
# coding:utf-8

user = {}  # 定义一个字典，用于存放普通用户信息，初始值为空

def Administrator_Menu():
while 1:
Menu = """

**** Administrator Function List ****
*                                   *
*           1.New Users             *
*           2.Print All Users       *
*           3.exit                  *
*                                   *
*************************************
(Admin)input your choice:"""
choice = input(Menu)
if choice == 1:
new_username = raw_input("input new username:")
new_password = raw_input("input new password:")
if user.has_key(new_username):  # 经检验，该用户已存在于字典中，无法添加
print "  %s already exists,please input again." % (username)
else:
user.setdefault(new_username, new_password)  # 经检验，原字典中不存在该用户，成功添加

elif choice == 2:
if len(user) == 0:  # 字典为空，即不存在用户
print "list is empty."
else:
for i in user.keys():
print "username:%10s  password:%10s" % (i, user[i])  # 打印字典

elif choice == 3:
return 1         #返回主菜单
else:
print "input error."

def Ordinary_User_Menu(username):
while 1:
Menu = """

**** Ordinary User Function List ****
*                                   *
*       1.Personal information      *
*       2.log off                   *
*       3.exit                      *
*                                   *
*************************************
input your choice:"""
choice = input(Menu)
if choice == 1:
print username, user[username]  # 显示个人信息
elif choice == 2:
del (user[username])  # 注销用户
return 0
elif choice == 3:
return 1      #返回主菜单

while 1:
Menu = """
**** Welcome to CRM ****
*                      *
*       1.login        *
*       2.exit         *
*                      *
************************
input your choice:"""
choice = input(Menu)
if choice == 1:
username = raw_input("please input username:")
password = raw_input("please input password:")
if username == 'westos' and password == 'redhat':  # 判断其为管理员账户，若登陆成功，则打印管理员菜单
Administrator_Menu()
elif user.has_key(username):            #判断所输入用户名是否存在于字典中
if password==user[username]:        #进一步匹配密码
Ordinary_User_Menu(username)    #打印普通用户菜单
else:
print "sorry,your password is wrong."
else:
print "sorry,your username is wrong."

elif choice == 2:
exit(0)
else:
print "input error."

主菜单界面，选择登陆，并输入管理员账户和密码：



管理员菜单界面，新添两名用户



为了验证是否添加成功，打印当前字典中的所有用户



退出管理员菜单，返回主菜单界面，验证刚才注册的两名用户是否能够成功登陆



成功登陆用户Cecilia，打印个人信息



注销用户Cecilia，自动返回主菜单