Python Day1 作业

作业二：编写登陆接口

• 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

FlowChart：

代码：

#!usr/bin/env python
# -*- coding:utf-8 -*-
# Author: Wayne Zhong

user = ‘Wayne‘
pwd = ‘123465‘

f = open(‘status.txt‘)

if f.read() == ‘Y‘:

    for i in range(3):
        username = input(‘Input username:‘)
        password = input(‘Input password：‘)
        if username == user and password == pwd:
            print(‘Welcome login.‘)
            break
        else:
            print(‘User invalid.‘)

    else:
        f = open(‘status.txt‘,‘w‘)
        f.write(‘N‘)
        print(‘3 times wrong input, account is blocked.‘)

else:
    print(‘Account is blocked.‘)

作业三：多级菜单

• 三级菜单
• 可依次选择进入各子菜单
• 所需新知识点：列表、字典

Flowchart：

代码：

#!usr/bin/env python
# -*- coding:utf-8 -*-
# Author: Wayne Zhong

city_dict = {
    ‘1.北京‘:{
        ‘(1)朝阳‘ : [‘1.白静‘, ‘2.邹清‘, ‘3.群众‘],
        ‘(2)海淀‘ : [‘1.张佳‘, ‘2.王迪‘, ‘3.学霸‘],
        ‘(3)大兴‘ : [‘1.尹伟‘, ‘2.苏慧‘, ‘3.金良‘]
    },
    ‘2.上海‘:{
        ‘(1)浦东‘ : [‘1.Andy‘, ‘2.黄渊‘, ‘3.蒋一‘],
        ‘(2)徐汇‘ : [‘1.马伟‘, ‘2.高成‘, ‘3.吴成‘],
        ‘(3)宝山‘ : [‘1.刘松‘, ‘2.王丹‘, ‘3.祥子‘]
    },
    ‘3.深圳‘:{
        ‘(1)罗湖‘ : [‘1.陈建‘, ‘2.范志‘, ‘3.刘洋‘],
        ‘(2)南山‘ : [‘1.邓明‘, ‘2.黄灿‘, ‘3.陆坤‘],
        ‘(3)宝安‘ : [‘1.范波‘, ‘2.李松‘, ‘3.王瑶‘]
    },
    ‘4.西安‘:{
        ‘(1)长安‘ : [‘1.陈琳‘, ‘2.Meth‘, ‘3.何潇‘],
        ‘(2)雁塔‘ : [‘1.段佳‘, ‘2.邱力‘, ‘3.杨龙‘],
        ‘(3)未央‘ : [‘1.光圈‘, ‘2.王盼‘, ‘3.孙欢‘]
    }
}

def district():
    while(1):

        d = []

        # print (city_dict[city].keys())
        print(‘%s 有以下区县：‘ % city)
        for i in sorted(city_dict[city].keys()):
            print(i)  # 将district按行输出
            d.append(i)  # 将district按列表排列，放入d列表中

        # print(d)
        district_No = input(‘请输入需查询区县的编号：（后退:b  退出:q）‘)
        print(‘---------------------------------------------------------‘)
        if district_No == ‘q‘:
            print(‘查询结束‘)
            exit()
        elif district_No == ‘b‘:
            break
        else:
            for i in d:
                if district_No in i:
                    district = i
                    print(‘%s 有这些朋友：‘% district)
                    for j in city_dict[city][district]:
                        print (j)
                    print(‘---------------------------------------------------------‘)
                    goon = input(‘查询完成，继续？（Y：继续  其他：结束）‘)
                    if goon == ‘Y‘:
                        break
                    else:
                        print(‘查询结束‘)
                        exit()
            else:
                print(‘区县编号输入错误，请重新输入‘)

while(1):
    c = []
    d = []
    for i in sorted(city_dict.keys()):  #
        print (i)  # 将city按行输出
        c.append(i)  # 将city按列表排列，放入c列表中

    #print (c)
    city_No = input(‘请输入需查询城市的编号：（退出:q）‘)
    print(‘---------------------------------------------------------‘)
    if city_No == ‘q‘:  # 如果输入q，则退出
        print(‘查询结束‘)
        break
    else:  # 如果没有输入q
        for i in c:  # 遍历c列表中的城市
            #print (i)
            if city_No in i:  # 如果输入的city_No在遍历的某城市i中
                city = i  # 把i赋值给city

                district()

                #print(i)
                break
        else:
            print(‘城市编号输入错误，请重新输入‘)  # 如果输入的city_No不在遍历的城市中，重新输入并返回