python学习第一天

1.编写登陆接口

输入用户名 密码

认证成功后返回欢迎信息

3次输错 锁定

流程图：

 代码如下：

# -*- coding: UTF-8 -*-
user = 'gzc'
passw = 'gzc'
flag = 0
for j in range(3):
    if flag == 1:
        break
    u = raw_input('请输入用户名：')
    p = raw_input('请输入密码：')
    f = open('user.list','r' )
    for i in f.readlines() :
            i = i.strip()
            if i == u :
                print ('该用户已被锁定')
                flag=1
    f.close()
    if j == 2 :
        print ('账户被锁')
        f = open('user.list','a+')
        f.write('
'+str(u))
        f.close()
        break
    if (u == user and p ==passw ):
        print ('已经登陆')
        break
    else:
        continue

2.三级菜单

可依次选择进入菜单

q退出 b返回上一级

流程图：

代码如下：

# -*- coding: UTF-8 -*-

zone = {
    'zhejiang':{
        'hangzhou':{'shangcheng','xaicheng','yuhang'},
        'ningbo':{'jiangbei','cixi'},
        'wenzhou':{'yuyao','leqing'},
    },
    'jiangsu':{
        'nangjing':{'qinhuai','gulou'},
        'suzhou':{'gusu','huqiu'},
        'yangzhou':{'guangling','jiangdu'}

    }
}
while True:
    province_list = list(zone.keys())
    print(" 省 ".center(50, '*'))
    for i in province_list:
        print province_list.index(i)+1,i
    proname_num = raw_input('请选择省份：')
    while True:
        if proname_num == 'b':
            break
        if proname_num == 'q':
            exit()
        proname_num = int(proname_num)
        if proname_num > 0 and proname_num <= len(province_list):
            print(" city ".center(50, '*'))
            proname = province_list[proname_num-1]
            city_list = list(zone[proname].keys())
            for j in city_list:
                print city_list.index(j)+1,j
            city_num = raw_input('请选择市区：')
            if city_num == 'b':
                break
            if city_num == 'q':
                exit()
            city_num = int(city_num)
            if city_num > 0 and  city_num <= len(city_list):
                print(" town ".center(50, '*'))
                cityname = city_list[city_num-1]
                town_list = list(zone[proname][cityname])
                for k in town_list:
                    print town_list.index(k)+1,k