Question

How do we implement abstract method in Python. Support your answer with an example.

Answer 1

An abstract method may be declared in a parent class by raising NotImplementedError. A derived class implements it by overriding the method.

class Circle(object):
    def get_radius(self):
        raise NotImplementedError

class Circle1(Circle):
    def __init__(self, radius):
        self.radius = radius

    def get_radius(self):
        return self.radius

c = Circle1(10)
print(c.get_radius())

Output

10