python 购物车

Posted 2020-10-29

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

"""
功能要求：

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。
附加：可充值、某商品移除购物车
"""
# 代码实现如下：

goods = [
    {"name": "电脑", "price": 1999},
    {"name": "鼠标", "price": 10},
    {"name": "游艇", "price": 20},
    {"name": "美女", "price": 998},
]

cart = []

while True:
    try:
        assets_input = input("请输入总资产金额：")
        assets = int(assets_input)
        print("总资产为：",assets)
        break
    except:
        print("输入错误... ...请重新输入 !")

while True:
    for k,v in enumerate(goods,1):
            print(k,v[‘name‘],v[‘price‘])
    try:
        inp = input("请输入所需要购买商品的序号：")
        inp_num = int(inp)
        pass
    # 判断输入正确性

        if inp_num< len(goods)+1:
            pass
        else:
            print("输入序号错误... ...请重新输入 !")
            continue

        inp_key = goods[inp_num-1]
        print("************************购物车信息*************************")
        print(inp_key[‘name‘],inp_key[‘price‘],"已加入购物车!")
        print("购物车的商品如下列表：")
        cart.append(inp_key)
        expense = 0
        for inp_key,inp_value in enumerate(cart,1):
            print(inp_key,"[",inp_value[‘name‘],inp_value[‘price‘],"]")
            p = inp_value[‘price‘]
            expense = int(expense + p)
        if assets > expense:
            shengyu = assets - expense
            print("还剩余：",shengyu)
            print("提交购买请输入：y\n继续购买请输入：g\n清空购物车输入：c\n退出购物请输入：b\n更新购物车输入：w")
            print("********************************************************")
            userchoose = input("请提交选择：")
            if userchoose == "y":
                count = len(cart)
                print("购买商品数量：",count)
                print("总金额：",shengyu)
                break
            elif userchoose == "g":
                continue
            elif userchoose == "c":
                del cart[:]
                print("已清空购物车,商品列表显示：",cart)
            elif userchoose == "w":
                print("********************************************************")
                print("购物车清单如下：")
                for inp_key,inp_value in enumerate(cart,1):
                    print(inp_key,"[",inp_value[‘name‘],inp_value[‘price‘],"]")
                shopupdate= input("请选择要去掉的商品序号：")
                update_num = int(shopupdate)
                update_numkey =update_num -1
                cart.remove(cart[update_numkey])
                print("购物车更新清单如下：")
                for inp_key,inp_value in enumerate(cart,1):
                    print(inp_key,"[",inp_value[‘name‘],inp_value[‘price‘],"]")
                count = len(cart)
                print("购买商品数量：",count)
                p = inp_value[‘price‘]
                shengyu = assets - int(p)
                print("还剩余：",shengyu)
                print("********************************************************")
            elif userchoose==None or userchoose!=‘y‘ or userchoose!=‘c‘or userchoose!=‘g‘ or userchoose!=‘w‘:
                print("输入非法数值，请重新输入... ...")
                continue
            else:
                userchoose == "b"
                break
        else:
            print("钱不够，请充值：")
            assets_chongzhi = input("请输入充值金额：")
            assets = assets + int(assets_chongzhi)
            print("充值成功，总资产为：",assets)
            print("********************************************************")
    except:
        print("输入序号错误... ...请重新输入 !")

ps: 好久没写了，练练手，水平太太太 ... ... 不说了，哈哈