[英]I want to create a simple inventory management system using classes and data structures. I am new to OOP in python
代码应捕获库存产品(即名称、价格、供应日期、供应商名称、数量),检索每次购买时给出名称时的价格并扣除库存数量,计算每次购买的总价格并打印指示值购买日期和时间,当数量达到5时向店主发送警报,并向供应商下订单。
我的代码现在没有循环,因此我可以添加许多产品然后能够访问它们,我尝试使用 while 循环,但它会永远运行。 请帮助
import datetime
class Stock:
def __init__(self, name, price, supplier, quantity,date):
self.name = name
self.price = price
self.date = date
self.supplier = supplier
self. quantity = quantity
def check_item(self, name):
for i in range(len(ls)):
if (ls[i].name == name):
return i
def sale(self):
n = int(input("How many products to sale: "))
total = 0
for j in range(n):
name = input("Enter Product name : ")
quantity = int(input("Enter quantity: "))
i = obj.check_item(name)
if i and ls[i].quantity >= quantity:
ls[i].quantity -= quantity
if ls[i].quantity < 5:
print("Low Stock! Low Stock! Order Placed")
obj.place_order(name, ls[i].supplier, quantity+10)
print("....Uncle G Shop....")
print(datetime.date.today())
print("Product Name | Quantity | Cost $")
print(ls[i].name, end=" ")
print(quantity, end=" ")
print(ls[i].price * quantity)
total += ls[i].price * quantity
print("\n")
print("Total Cost----->", "$" + total)
else:
print("Product out of stock or not enough quantity")
def purchase(self):
name = input("Enter Product name: ")
date = datetime.date.today()
i = obj.check_item(name)
if i:
ls[i].quantity += int(input("Enter quantity: "))
ls[i].price = int(input("Enter product price: "))
ls[i].date = date
else:
quantity = int(input("Enter quantity: "))
price = int(input("Enter product price: "))
supplier = input("Enter Supplier: ")
ob = Stock(name, price, supplier, quantity, date)
ls.append(ob)
def place_order(self,name, supplier, quantity):
return name, supplier, quantity
def print_products(self):
def __repr__(self):
return str(self.name) + str(self.price) + str(supplier) + str(self.quantity) + str(self.date)
return __repr__
def main(self):
print("Welcome To Uncle G Shop")
print("choose an option below")
print("\n1.Enter a Product\n2.Make a sale \n3.See all Products\n4.Exit")
option = int(input("Enter option here: "))
while True:
if option == 1:
obj.purchase()
elif option == 2:
obj.sale()
elif option == 3:
obj.print_products()
elif option == 4:
print("Have a good day")
break
else:
print("Enter a valid input!")
# A list to add Products
ls = []
# an object of Stock class
obj = Stock('', 0, 0, 0, '')
obj.main()
您的main
菜单没有break
选项 4 的while
循环。
您还需要重新考虑如何使用您的 class。 目前,您有多种方法引用在 class 之外创建的变量ls
。 要么将Stock
视为 class 来处理个人购买记录,要么将整体处理库存。 您可以在 class 本身中维护 class 的实例list
,并提供 class 方法以及实例方法来管理整个库存。
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