38. Factory Pattern

The Factory pattern provides a way to create objects without specifying the exact class.

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Example

class Dog:
    def speak(self): return "Woof"

class Cat:
    def speak(self): return "Meow"

def animal_factory(kind):
    if kind == "dog": return Dog()
    if kind == "cat": return Cat()
    raise ValueError("Unknown animal")

a = animal_factory("dog")
print(a.speak())

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Wrap-Up

Factories decouple object creation from usage.