day01作业及练习题

1. 基于文件存储的用户登录程序（3次登录失败，锁定用户）

示例：
db
alex|123123|3
eric|123123|3

# #!/usr/bin/python
# -*- coding:utf-8 -*-
import  getpass
db = open('db','r')
data =db.read()
db.close()
#print(data)
user_list = []
user_str = []
target = ''
user_str_list = data.split('\n')
#print(user_str_list)
for temp in user_str_list:
    temp =temp.split('|')
    #print(temp)
    # dic_list = {
    #      'name': temp[0],
    #      'pwd': temp[1],
    #      'times': temp[2]
    #  }
    dic_list = {
        temp[0]:[temp[1],temp[2]]

    }
   # print(dic_list)
    user_list.append(dic_list)
user_info ={}
lock_username = []
num = 0
while num < len(user_list):
    user_info.update(user_list[num])  ##合并字典
    num += 1
#print(user_info)
#user_info ={'eric': ['123123', '3'], 'aa': ['123123', '1'], 'alex': ['123123', '0']}
while True:
    username = input("Please input user \033[;34maccount\033[0m:").strip()
    if len(username) == 0: ##如果输入空继续输入用户名
        continue
    if username in user_info.keys():
        if int(user_info[username][1]) >3:　
            print("%s user has been locked, please unlock" % username)
            break
        for num in range(int(user_info[username][1]),4,1):
            passwd = getpass.getpass("Please input user \033[;34mpassword\033[0m:").strip()
            if len(passwd) ==0:
                continue
            if passwd == user_info[username][0]:
                print("Welcome \033[;34m%s\033[0m login system!!!!" % username)
                exit()
            else:
                print("Wrong password, Can try again %r itmes" % (abs(3 - num)))
                user_info[username][1] = int(user_info[username][1]) +1
                continue
        else:
            #print(user_info)
            for k, y in user_info.items():
                user_str.append((k, y[0], y[1]))
            num = 0
            while num < len(user_str):
                target += str(user_str[num])  ##合并字符串
                num += 1
            db_new = target.replace(',', '|').replace(')', '\n').replace("'", "").replace('(', '').replace(' ', '').strip()
            f2 = open('db', 'w')
            f2.write(db_new)
            f2.close()
            print("\033[;31m您的密码输入错误超过3次，已经锁定\033[0m")
            exit()
    else:
        print ("\033[;31mWrong account %s,retry\033[0m" % username)

 

 

 

a. 元素分类

有如下值集合 v1 = [11,22,33,44,55,66,77,88,99,90]，
将所有大于 66 的值保存至字典的第一个key中，将小于 66 的值保存至第二个key的值中。
即： {'k1': 大于66的所有值, 'k2': 小于66的所有值}

v2 = {'k1': [],'k2':[] }

#！/usr/bin/python
# -*- coding:utf-8 -*-
v1 = [11, 22, 33, 44, 55, 66, 77, 88, 99, 90]
v2 = {
    'k1':[],
    'k2':[]
}
item1 = []
item2 = []
for  item in v1:
    if int(item) > 66:
        item1.append(item)
        v2['k1'] = item1
    else:
        item2.append(item)
        v2['k2'] = item2
print  (v2)

b. 功能要求：
v = 2000
要求用户输入总资产，例如：2000
显示商品列表，让用户根据序号选择商品，加入购物车
购买，如果商品总额大于总资产，提示账户余额不足，否则，购买成功。
goods = [
{"name": "电脑", "price": 1999},
{"name": "鼠标", "price": 10},
{"name": "游艇", "price": 20},
{"name": "美女", "price": 998},
]

#！/usr/bin/python
# -*- coding:utf-8 -*-
shopping_cart = []
goods = [
    {"name": "电脑", "price": 1999},
    {"name": "鼠标", "price": 20},
    {"name": "游艇", "price": 2000},
    {"name": "美女", "price": 38},
    {"name": "汽车", "price": 59999}
]
num = input('>>>请输入您的金额：').strip()
#num = 2000
num = int(num)
for val in enumerate(goods):  ##获取goods位置
    id = val[0]
    product_list = val[1]
    product_name = val[1]['name']
    product_price = val[1]['price']
    print (id,":",product_name,product_price)
cost = 0
while True:
    choice_product = input('>>>请选择购买的商品编号').strip()
    if choice_product.isdigit():
        choice_product = int(choice_product)
        if choice_product < len(goods) and choice_product >= 0:
            p_items = goods[choice_product]
            #p_name = p_items['name']
            #p_money = p_items['price']
            #if p_money < num:
            shopping_cart.append(p_items)
            print("您购买的商品已经加入购物车如下")
            cost = 0
            for p_items in shopping_cart:
                print(p_items['name'],p_items['price'])
                cost += p_items['price']
            #print(cost)
            stop = input("是否结账（Y/N）：")
            if stop.upper() == "Y":
                if num > cost:
                    num -= cost
                    print("您购买的商品清单如下:")
                    for p_items in shopping_cart:
                        print(p_items['name'], p_items['price'])
                    print("\033[32m消费总金额:", cost, "元\033[0m")
                    print("\033[32m您的余额为:", num, "元\033[0m")
                    break
                else:
                    print("您的余额不足,还差%s" % (abs(cost - num)))
                    break
        else:
            print("您选择的商品此商场没有，请选择其他商品！")
    else:
        print("请输入正确参数")

c. 用户交互，显示省市县三级联动的选择
　　dic = {
　　　　"河北": {
　　　　　　"石家庄": ["鹿泉", "藁城", "元氏"],
　　　　　　"邯郸": ["永年", "涉县", "磁县"],
　　　　　　}
　　　　"河南": {
　　　　　　...
　　　　　　}
　　　　"山西": {
　　　　　　..
　　　　　　　}
　　}

#！/usr/bin/python
# -*- coding:utf-8 -*-
# c.用户交互，显示省市县三级联动的选择
dic = {
     "河北": {
         "石家庄": ["鹿泉", "藁城", "元氏"],
         "邯郸": ["永年", "涉县", "磁县"],
     },
     "黑龙江": {
           "哈尔滨":["宾县","通河","依兰"],
           "齐齐哈尔":["富裕县","依安县","拜泉县"]
     },
     "山西": {
            "太原":["清徐县","阳曲县","娄烦县"],
            "大同":["天镇县","阳高县","广灵县"]
     },
        "河南":{
             "郑州":["中原区","管城回族区","上街区"],
            "开封市":["龙亭区","鼓楼区","开封县"]
    }
 }
print('欢迎登陆省市级查询系统')
while True:
    for v in dic.keys():
        print(v)
#while True:
    inp = input('>>>请选择您要查询的省份：').strip()
    while True:
        for v in dic[inp]:
            print(v)
    #while True:
        city = input('>>>请选择您要查询的城市：').strip()
        print("您查询的%s省%s市,包含以下县城市" % (inp,city))
        for c in  dic[inp][city]:
            print("\033[32m%s\033[0m" % c)
        stop_city = input(">>>您是否查询%s省的其他城市（Y/N)：" % inp)
        if stop_city.upper() == "Y":
            continue
        elif stop_city.upper() == "N":
            break
    stop = input(">>>您是否选择其他省份（Y/N)：")
    if stop.upper() == "Y":
        continue
    elif stop.upper() == "N":
        break