Создайте пользовательский класс для описания товара

class Item:
 
    def __init__(self, name, price, decription, demensions):
        self.price = price
        self.decription = decription
        self.demensions = demensions
        self.name = name
 
    def __str__(self):
        pass
 
 
class User:
 
    def __init__(self, name, surname, numberphone):
        self.name = name
        self.surname = surname
        self.numberphone = numberphone
 
    def __str__(self):
        pass
 
 
class Purchase:
    def __init__(self, user):
        self.products = {}
        self.user = user
        self.total = 0
 
    def add_item(self, item, cnt):
        self.products[item] = cnt
 
    def __str__(self):
        pass
 
    def get_total(self):
        pass
   
   
lemon = Item('lemon', 5, "yellow", "small", )
apple = Item('apple', 2, "red", "middle", )
print(lemon)  # lemon, price: 5
 
buyer = User("Ivan", "Ivanov", "02628162")
print(buyer)  # Ivan Ivanov
 
cart = Purchase(buyer)
cart.add_item(lemon, 4)
cart.add_item(apple, 20)
print(cart)
"""
User: Ivan Ivanov
Items:
lemon: 4 pcs.
apple: 20 pcs.
"""
print(cart.get_total()) # 60