#  -*-   coding: utf-8   -*-# @Time      : 2018/10/18 16:06# @Author    : Two Brother# @EMAIL     : yeluyide@163.com# @FILE      : shoppingcart.py# @SOFTWARE : PyCharm

##################title######################用户入口：#1.商品信息存在文件里###商家入口：#2.可以添加商品，修改商品价格############################################with open('use','r+',encoding='utf-8') as fu: dictfu = {} lines1 = fu.readlines()for line in lines1: (key,value) = line.strip().split() dictfu[key] = valuewith open('commodity', 'r+', encoding='utf-8') as fc: dictfc = {} lines2 = fc.readlines()for line in lines2: (key,value1,value2) = line.strip().split() dictfc[key] = {value1:value2}with open('admin','r') as fa: admin = fa.readlines()for i in range(0,len(admin)): admin[i] = admin[i].strip()i = input("请输入您的账号>>>>>>>>>>")if i in dictfu.keys(): lastmoney = int(dictfu[i])print('我是会员%s，我的余额%s' % (i,lastmoney))for n in dictfc:print(n,dictfc[n]) buy = [] salecost = 0 while True: ic = input("请输入您要购买的商品编号>>>>>>>")if ic in dictfc.keys():print("商品%s已经加入购物车,查看购物车请按S,直接支付请按P" % dictfc[ic]) buy.append(dictfc[ic])for x in dictfc[ic]: salecost = salecost + int(dictfc[ic][x])continue elif ic.upper() == 'S':print("您的购物车信息如下,总计%s元，直接支付请按P" % salecost)for y in buy:print(y)continue elif ic.upper() == 'P':if salecost <= lastmoney: lastmoney2 = lastmoney - salecostprint("您本次消费金额%s元，余额还剩余%s元！欢迎下次光临" % (salecost,lastmoney2))with open('use', 'w', encoding='utf-8') as fu2:for line in lines1:if i in line: line = line.replace(str(lastmoney),str(lastmoney2)) fu2.write(line)break else: pi = input("您本次购物需要花费金额%s元，余额只有%s元，交易失败，重新购物请按B，充值请按R，退出请按其他键>>>>"%(salecost,lastmoney))if pi.upper() == 'B':continue if pi.upper() == 'R':print("充值功能待开放")break else:break else:break

elif i in admin:while True: ai = input("请选择你要做的操作：A查看商品 B修改商品价格 C添加删除商品>>>>>")if ai.upper() == 'A':for o in dictfc:print(o,dictfc[o])continue elif ai.upper() == 'B': bi = input("请选择你要修改商品的商品编号>>>>")if bi in dictfc:print(dictfc[bi]) bi2 = input("请输入你要修改此商品的价格>>>>")with open('commodity','w',encoding='utf-8') as fc2:for line in lines2:if bi in line:for bi3 in dictfc[bi]: line = line.replace(dictfc[bi][bi3],bi2) fc2.write(line)with open('commodity', 'r', encoding='utf-8') as fc3: lines3 = fc3.readlines()for line in lines3: (key, value1, value2) = line.strip().split() dictfc[key] = {value1: value2}else:print("商品编码输入有误，请重新输入")continue else:print('程序退出')breakelse:print('用户不存在')