What are some examples of design patterns in Python?

What are some examples of design patterns in Python?

There are several design patterns in Python, such as Singleton, Factory, and Observer. Would you like to know more about a specific one?

Can you explain the Singleton pattern?

Sure! The Singleton pattern ensures that a class has only one instance and provides a global point of access to it. Here's a simple implementation:

class Singleton:
    _instance = None

    def __new__(cls):
        if cls._instance is None:
            cls._instance = super(Singleton, cls).__new__(cls)
        return cls._instance

What about the Factory pattern?

The Factory pattern provides a way to create objects without specifying the exact class of the object that will be created. Here's an example:

def car_factory(car_type):
    if car_type == "sedan":
        return Sedan()
    elif car_type == "suv":
        return SUV()
    raise ValueError(f"Unknown car type: {car_type}")