abc — Easy Playground

Abstract Base Classes: define interfaces subclasses must implement

Python Playground

from abc import ABC, abstractmethod

class Shape(ABC):
    @abstractmethod
    def area(self):
        pass

    @abstractmethod
    def perimeter(self):
        pass

class Circle(Shape):
    def __init__(self, radius):
        self.radius = radius

    def area(self):
        return 3.14159 * self.radius ** 2

    def perimeter(self):
        return 2 * 3.14159 * self.radius

c = Circle(5)
print(f"Area: {c.area():.2f}")
print(f"Perimeter: {c.perimeter():.2f}")

Output

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The abc module is part of Python's standard library. Abstract Base Classes: define interfaces subclasses must implement.

Challenge

Try modifying the code above to explore different behaviors. Can you extend the example to handle a new use case?

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