Abstract Class in Python

Program 1

# Abstract class and methods
from abc import ABC,abstractmethod

# class Button(ABC):
#     @abstractmethod
#     def click(self):
#         None
# class Color(Button):
#      None
#     # def click(self):
#     #     print("Its Red Color now")

# class Image(Button):
#     def click(self):
#         print("Its My Photo now")

# C=Color()
# C.click()        
# I=Image()
# I.click()

class Area(ABC):

    @abstractmethod
    def area(self):
        None
class Circle(Area):
    def area(self):
        r=float(input("Enter Radious of Circle"))
        A=3.14*r*r
        print("Area= ",A)

class Rect(Area):
    def area(self):
        l=float(input("Enter length"))
        b=float(input("Enter bridth"))
        print("Area=",(l*b))


# C=Circle()
# C.area()
R=Rect()
R.area()