[PYTHON/COMMON] ABC 클래스 : @abstractmethod 데코레이터를 사용해 추상 클래스/메소드 만들기

icodebroker COMMON 2024-06-18

■ ABC 클래스에서 @abstractmethod 데코레이터를 사용해 추상 클래스/메소드를 만드는 방법을 보여준다.

▶ 예제 코드 (PY)


import math

from abc import ABC, abstractmethod

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

  @abstractmethod
  def getPerimeter(self):
    pass

class Square(Shape):
  def __init__(self, side):
    self.side = side

  def getArea(self):
    return self.side * self.side

  def getPerimeter(self):
    return 4 * self.side

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

    def getArea(self):
       return math.pi * self.radius * self.radius

    def getPerimeter(self):
        return 2 * math.pi * self.radius

square = Square(4)

print(square.getArea()     )  # 16
print(square.getPerimeter())  # 16

circle = Circle(2)

print(circle.getArea()     )  # 12.566370614359172
print(circle.getPerimeter())  # 12.566370614359172

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import math

from abc import ABC, abstractmethod

class Shape(ABC):

@abstractmethod

def getArea(self):

pass

@abstractmethod

def getPerimeter(self):

pass

class Square(Shape):

def __init__(self, side):

self.side = side

def getArea(self):

return self.side * self.side

def getPerimeter(self):

return 4 * self.side

class Circle(Shape):

def __init__(self, radius):

self.radius = radius

def getArea(self):

return math.pi * self.radius * self.radius

def getPerimeter(self):

return 2 * math.pi * self.radius

square = Square(4)

print(square.getArea() ) # 16

print(square.getPerimeter()) # 16

circle = Circle(2)

print(circle.getArea() ) # 12.566370614359172

print(circle.getPerimeter()) # 12.566370614359172