How can I implement the decorator pattern in Python?

How can I implement the decorator pattern in Python?

The decorator pattern allows you to add behavior to individual objects dynamically. Would you like a code example?

Yes, please provide a simple code example.

Sure! Here's a basic example:

class Coffee:
    def cost(self):
        return 5

class MilkDecorator:
    def __init__(self, coffee):
        self._coffee = coffee

    def cost(self):
        return self._coffee.cost() + 1

coffee = Coffee()
print(coffee.cost())  # Output: 5

milk_coffee = MilkDecorator(coffee)
print(milk_coffee.cost())  # Output: 6

What are some use cases for the decorator pattern?

It's great for adding responsibilities to objects without modifying their structure, like logging, authentication, or caching.