说明
分享python实现自动售货一个小作业
主要功能
1.查询商品列表
2.购买商品
输入2进行购买商品,输入商品id和数量,可以选择不同商品,最后进行结账操作。
3.订单查询
可以有两种查询方式,全部查询和按时间条件查询
具体操作如下:
全部查询:
时间条件查询:
4.退出
就按4直接退出23333
实现思路
其实就是参考路边的自动售货机贩卖饮料啥的,也有借鉴其他人的代码。改进的地方在于购买商品功能,能选择不同商品和数量,最后再结账。
定义了商品类、订单类
一开始初始化商品的数据
完整代码块
import time
print('欢迎光临')class Products:#商品类 定义名字、价格和存货数量def __init__(self, name, price, surplus_count):self.name = nameself.price = priceself.surplus_count = surplus_countclass Order:#订单类 包括购买物品名称、价格和时间 购买数量def __init__(self, name, price, buy_time,buy_count):self.name = nameself.price = priceself.buy_time = buy_timeself.buy_count = buy_count#字符串时间对比
def compare_time(time1,time2):s_time = time.mktime(time.strptime(time1,'%Y-%m-%d %H:%M:%S'))e_time = time.mktime(time.strptime(time2,'%Y-%m-%d %H:%M:%S'))return int(s_time) - int(e_time)#全局变量 商品列表
products_list = [Products("乐事薯片", 5, 5),Products("卫龙辣条", 3, 6),Products("可乐", 3, 2),Products("橙汁", 4, 5),Products("波力海苔", 6, 0),
]#订单list 存放订单数据
order_list = []#打印商品列表
def show_products_list():print("序号\t\t商品名称\t\t价格\t\t存货数量")i = 1for products in products_list:print("%d\t\t%s\t\t%s\t\t%s" % (i, products.name, products.price,products.surplus_count))i += 1#购买商品
def buy_products():buy_obj = {}while(True):op = input("1.购买商品 2.结账 3.退出 \n")if op == "1":products_id = int(input("请输入需要购买商品的序号:\n")) - 1if products_id > len(products_list) or products_id < 0:print("error!请输入正确的序号!")else:products = products_list[products_id]if products.surplus_count > 0:buy_count = int(input("请输入购买数量:"))#限制库存提示if buy_count> products.surplus_count:print("库存不足,请提醒补货!")else:buy_obj[products_id] = buy_count;else:print("库存不足,请提醒补货!")elif op == "2":need_pay_money = 0;for products_id in buy_obj.keys():buy_count = buy_obj[products_id]products = products_list[products_id]need_pay_money += products.price * buy_count;if need_pay_money<=0:return ;print ("您购买了:")print("商品名\t\t商品价格\t\t购买数量")for products_id in buy_obj.keys():buy_count = buy_obj[products_id]products = products_list[products_id]print("%s\t\t%s\t\t%s\n" % (products.name, products.price, buy_count))print ("需要支付金额:\t",need_pay_money)money = float(input("请输入支付金额:\n"))if money >= need_pay_money:#减库存for products_id in buy_obj.keys():buy_count = buy_obj[products_id]products = products_list[products_id]products.surplus_count = products.surplus_count - buy_countproducts_list[products_id] = products#生成订单timeArray = time.localtime(int(time.time()))order_list.append(Order(products.name, products.price * buy_count, time.strftime("%Y-%m-%d %H:%M:%S", timeArray),buy_count))#清空buy_obj.clear()#大于0才提示找零if money - need_pay_money >0:print("购买成功:找回%.2f元!" % (money - need_pay_money))else:print("购买成功!")break;else:print("支付金额不足!")elif op == "3":break;#打印订单列表
def show_order_list():is_query_all = int(input("请选择查询方式 1.查询全部销量 2.按时间查询销量\n"))query_order_list = []if is_query_all == 2:time_str = time.localtime(int(time.time()))now_time = time.strftime("%Y-%m-%d %H:%M:%S", time_str)start_time = input("请输入开始时间 例如:"+now_time+"\n")end_time = input("请输入结束时间 例如:"+now_time+"\n")for order in order_list:compare_num1 = compare_time(order.buy_time,start_time)compare_num2 = compare_time(order.buy_time,end_time)if compare_num1>=0 and compare_num2<=0:query_order_list.append(order)i = 1;print("序号\t\t商品名\t\t支付金额\t\t购买数量\t\t购买时间")for order in query_order_list:print("%d\t\t%s\t\t%s\t\t%s\t\t%s" % (i, order.name, order.price,order.buy_count,order.buy_time))i += 1elif is_query_all == 1:i = 1print("序号\t\t商品名\t\t支付金额\t\t购买数量\t\t购买时间")for order in order_list:print("%d\t\t%s\t\t%s\t\t%s\t\t%s" % (i, order.name, order.price,order.buy_count,order.buy_time))i += 1if __name__ == '__main__':while(True):n = input("请输入相应数字:1.查询商品列表 2.购买商品 3.销售查询------打印销售明细 4.退出\n")if n == "1":#显示商品列表方法show_products_list();elif n == "2":#购买商品buy_products();elif n == "3":#显示订单列表show_order_list();elif n == "4":print("已退出,欢迎下次光顾!")breakelse:print("输入错误,请重新输入!")
结尾
治愈焦虑,一步一个脚印!