python 程序： 改良购物车

Python 程序：购物车

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一、流程图

二、目录结构

三、代码

1、bin目录：

import sys,os,json
dir_path = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
sys.path.append(dir_path)
from core import shopping

if __name__ == "__main__":
    shopping.main()

2、conf目录：

未编写

3、core目录：

import json,sys,os
dir_path = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
sys.path.append(dir_path)
user_path = dir_path + "/db/user_data.json"
user_infor_path = dir_path + "/db/user_infor.json"
with open(user_path, "r", encoding="UTF-8") as f_load:
    user_list = json.load(f_load)
with open(user_infor_path, "r", encoding="UTF-8") as f_load:
    user_infor_list = json.load(f_load)

def login_check():
    name = input("input your user_name:")
    passwd = input("input your user_passwd:")
    if name in user_list and passwd == user_list[name]:
        print("登陆成功！")
        return name
    else:
        print("wrong uesr_name or password...")
        exit()
def creat_user():
    new_user = input("input user_name:")
    if new_user in user_list:
        print("用户已存在")
        return
    else:
        new_pswd = input("input user_pswd:")
    user_list[new_user] = new_pswd
    with open(user_path, "w", encoding="UTF-8") as f_dump:
        json.dump(user_list, f_dump)
    user_infor_list[new_user] = {"money": 1000, "user_goods": []}
    with open(user_infor_path, "w", encoding="UTF-8") as f_dump:
        json.dump(user_infor_list, f_dump)
    print("用户创建成功！")

import sys,os,json
dir_path = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
sys.path.append(dir_path)
from core import login
user_path = dir_path + "/db/user_infor.json"
goods_path = dir_path + "/db/goods.json"

def buy(who):
    with open(user_path, "r", encoding="UTF-8") as f_load:
        user_infor = json.load(f_load)
    user_goods_1 = user_infor[who]
    user_goods = user_goods_1["user_goods"]
    while True:
        print("--商品列表--")
        shop_list = goods_list()
        for i in shop_list:
            print(i,shop_list[i])
        print("------------")
        print("账户余额：",user_goods_1["money"])
        buy_sonething = input("选择购买的商品，按q退出！->")
        if buy_sonething in shop_list:
            user_money = user_goods_1["money"]
            cost_money = shop_list[buy_sonething]
            now_money = user_money - cost_money
            if int(now_money) >= 0 :
                print("余额",now_money)
                user_goods.append([buy_sonething,shop_list[buy_sonething]])
                user_goods_1["user_goods"] = user_goods
                user_goods_1["money"] = now_money
                user_infor[who] = user_goods_1
                with open(user_path, "w", encoding="UTF-8") as f_dump:
                    json.dump(user_infor, f_dump)
                g = input("按任意键继续，按q退出")
                if g == 'q':
                    print("购物清单：")
                    for i in user_goods:
                        print(i)
                    return now_money
                else:
                    continue
            else:
                print("余额不足！您的账户余额为：%s"%user_money)
                exit()
        elif buy_sonething == "q":
            exit()
        else:
            print("请输入正确的商品名称！")

def goods_list():
    with open(goods_path,"r", encoding="utf-8") as f:
        shop_list = json.load(f)
        return shop_list

def type_choice():
    choice = input("请选择登陆模式（1.客户/2.商家）：")
    if choice == "1":
        print("顾客模式：")
        return 1
    elif choice == "2":
        print("商家模式：")
        return 2
    else:
        print("输入错误！")
        return 0

def customer_type():
    web = '''
"-------------"
"用户登录按：1"
"用户注册按：2"
"-------------"
'''
    while True:
        print(web)
        i = input("--->:")
        if i == "1":
            user = login.login_check()
            break
        elif i == "2":
            login.creat_user()
        else:
            print("请选择正确的编号！")
    buy(user)

def manage_type():
    password = "123456"
    pswd = input("请输入管理员密码：")
    if pswd == password:
        while True:
            goods_dir = goods_list()
            for i in goods_dir:
                print(i,goods_dir[i])
            goods_contral = input("1：修改价格、2：添加商品、3：删除商品、q：退出：")
            if goods_contral == "1":
                change_goods = input("选择要修改的商品：")
                goods_money = input("输入%s的新价格："%change_goods)
                goods_dir[change_goods] = int(goods_money)
                with open(goods_path, "w", encoding="UTF-8") as f_dump:
                    json.dump(goods_dir, f_dump)
            elif goods_contral == "2":
                new_goods = input("新商品：")
                new_price = input("价格：")
                goods_dir[new_goods] = int(new_price)
                print("添加成功")
                with open(goods_path, "w", encoding="UTF-8") as f_dump:
                    json.dump(goods_dir, f_dump)
            elif goods_contral == "3":
                del_goods = input("选择要删除的商品：")
                del goods_dir[del_goods]
                with open(goods_path, "w", encoding="UTF-8") as f_dump:
                    json.dump(goods_dir, f_dump)
            elif goods_contral == "q":
                break
            else:
                print("输入错误！")
    else:
        print("密码错误！")
        exit()

def main():
    user_type = type_choice()
    if user_type == 1:  # 客户
        customer_type()
    elif user_type == 2:  # 商家
        manage_type()
    else:  # 错误
        exit()

if __name__ == "__main__":
    main()

4、db目录：

{"bike": 200, "fruit": 80, "book": 300, "phone": 2000}

{"aa": "123", "zz": "123", "jj": "123"}

{"jj": {"money": 919, "user_goods": [["fruit", 80], ["phone", 1]]}, "zz": {"money": 379, "user_goods": [["bike", 300], ["bike", 200], ["bike", 200]]}, "aa": {"money": 1420, "user_goods": [["bike", 300], ["fruit", 80]]}}

5、doc目录：

readme.doc