用python实现超市商品销售管理

class Goods(object): def __init__(self,id,name,price): self.id = id self.name = name self.price = price def __str__(self): info = "编号:%s\t商品名称:%s\t\t价格:%d"%(self.id,self.name,self.price) return infoclass ShopManager(object): def __init__(self,path): self.path = path self.shopdic = self.readFileToDic() Def readFileToDic(self): # 读取文件，写入到字典中 f = open(self.path, 'r', encoding='utf-8') clist = f.readlines() f.close() index = 0 shopdic = {} while index < len(clist): ctlist = clist[index].replace('\n', "").split("|") good = Goods(ctlist[0],ctlist[1],int(ctlist[2])) shopdic[good.id] = good index = index + 1 return shopdic def writeContentFile(self): str1 = '' for key in self.shopdic.keys(): good = self.shopdic[key] ele = good.id+"|"+good.name+"|"+str(good.price)+"\n" str1 = str1 + ele f = open(self.path, 'w', encoding='utf-8') f.write(str1) f.close() def addGoods(self): # 添加商品的方法 id = input("请输入添加商品编号:>") if self.shopdic.get(id): print("商品编号已存在，请重新选择！") return name = input("请输入添加商品名称:>") price = int(input("请输入添加商品价格:>")) good = Goods(id,name,price) self.shopdic[id] = good print("添加成功！") def deleteGoods(self): # 删除商品的方法 id = input("请输入删除商品编号:>") if self.shopdic.get(id): del self.shopdic[id] print("删除成功！") else: print("商品编号不存在！") def showGoods(self): # 展示所有商品信息 print("="*40) for key in self.shopdic.keys(): good = self.shopdic[key] print(good) print("="*40) def adminWork(self): info = """ ==========欢迎进入xxx购物商场========== 输入功能编号，您可以选择以下功能： 输入“1”：显示商品的信息 输入“2”：添加商品的信息 输入“3”：删除商品的信息 输入“4”：退出系统功能 ========================================== """ print(info) while True: code = input("请输入功能编号:>") if code == "1": self.showGoods() elif code == "2": self.addGoods() elif code == "3": self.deleteGoods() elif code == "4": print("感谢您的使用，正在退出系统！！") self.writeContentFile() break else: print("输入编号有误，请重新输入！！") def userWork(self): print(" ==============欢迎进入xxx购物商场==============") print("您可输入编号和购买数量选购商品，输入编号为n则结账") self.showGoods() total = 0 while True: id = input("请输入购买商品编号:>") if id == "n": print("本次购买商品共消费%d元，感谢您的光临！"%(total)) break if self.shopdic.get(id): good = self.shopdic[id] num = int(input("请输入购买数量:>")) total = total+good.price*num else: print("输入商品编号有误，请核对后重新输入！") def login(self): # 登录功能 print("==========欢迎登录xxx购物商场==========") uname = input("请输入用户名:>") password = input("请输入密码:>") if uname == "admin": if password == "123456": print("欢迎您，admin管理员") self.adminWork() else: print("管理员密码错误，登录失败！") else: print("欢迎你，%s用户"%(uname)) #执行用户的购买功能 self.userWork()