Here is a Python solution for the problem:

```python
class Product:
def __init__(self, id, name, price, quantity):
self.id = id
self.name = name
self.price = price
self.quantity = quantity

def __str__(self):
return f"ID: {self.id}
Name: {self.name}
Price: ${self.price}
Quantity: {self.quantity}"

def __eq__(self, other):
if isinstance(other, Product):
return self.__dict__ == other.__dict__
return False

def __deepcopy__(self, memo):
return Product(self.id, self.name, self.price, self.quantity)

# Test the class
p1 = Product(1, "Widget A", 10.99, 50)
p2 = p1.__deepcopy__({})

print("Product 1 details:")
print(p1)
print("Product 2 details (copy):")
print(p2)
```

In this code, we define a `Product` class with the required attributes. The `__str__` method is used to format the output when printing a `Product` object. The `__eq__` method is used to compare two `Product` objects. The `__deepcopy__` method is used to create a deep copy of a `Product` object.

We then create a `Product` object `p1` and use the `__deepcopy__` method to create a deep copy `p2`. We print the details of both products to verify that the copy was successful.

Question

Here is a Python solution for the problem:

```python
class Product:
    def __init__(self, id, name, price, quantity):
        self.id = id
        self.name = name
        self.price = price
        self.quantity = quantity

def __str__(self):
        return f"ID: {self.id}
Name: {self.name}
Price: ${self.price}
Quantity: {self.quantity}"

def __eq__(self, other):
        if isinstance(other, Product):
            return self.__dict__ == other.__dict__
        return False

def __deepcopy__(self, memo):
        return Product(self.id, self.name, self.price, self.quantity)

# Test the class
p1 = Product(1, "Widget A", 10.99, 50)
p2 = p1.__deepcopy__({})

print("Product 1 details:")
print(p1)
print("Product 2 details (copy):")
print(p2)
```

In this code, we define a `Product` class with the required attributes. The `__str__` method is used to format the output when printing a `Product` object. The `__eq__` method is used to compare two `Product` objects. The `__deepcopy__` method is used to create a deep copy of a `Product` object.

We then create a `Product` object `p1` and use the `__deepcopy__` method to create a deep copy `p2`. We print the details of both products to verify that the copy was successful.

Knowee AI · Accepted Answer