标签：python
#! /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
标签：python
原文地址：http://blog.51cto.com/leonsecurity/2093417
