Question

You want to create an abstract base class Shape with an abstract method area. Then, create two subclasses Circle and Square that implement area. Which code correctly achieves this?

Accepted Answer

from abc import ABC, abstractmethod

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

class Circle(Shape):
    def __init__(self, r):
        self.r = r
    def area(self):
        return 3.14 * self.r ** 2

class Square(Shape):
    def __init__(self, s):
        self.s = s
    def area(self):
        return self.s * self.s

Answer

from abc import ABC

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

class Circle(Shape):
    def area(self):
        return 3.14 * self.r ** 2

class Square(Shape):
    def area(self):
        return self.s * self.s

Answer

class Shape:
    def area(self):
        pass

class Circle(Shape):
    def area(self):
        return 3.14 * self.r ** 2

class Square(Shape):
    def area(self):
        return self.s * self.s

Answer

from abc import ABC, abstractmethod

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

class Circle(Shape):
    def area(self):
        return 3.14 * self.r ** 2

class Square(Shape):
    def area(self):
        return self.s * self.s

You want to create an abstract base class Shape with an abstract method area. Then, create two subclasses Circle and Square that implement area. Which code correctly achieves this?

Step 1: Check abstract base class definition

Step 2: Verify subclass implementations

Step 3: Analyze other options

Final Answer:

Quick Check:

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