Python Abstract Classes Example

Python_Abstract_Classes_example.py

from abc import ABC, abstractmethod
class Shape(ABC):
    @abstractmethod
    def area(self): pass

    @abstractmethod
    def perimeter(self): pass

class Square(Shape):
    def __init__(self, side):
        self.__side = side
    def area(self):
        return self.__side * self.__side
    def perimeter(self):
        return 4 * self.__side


square = Square(5)
print(square.area())
print(square.perimeter())