Abstract Classes in Python

An Abstract Class is a class that is specifically defined to lay a foundation for other classes that exhibits a common behaviour or similar characteristics. It is primarily used only as a base class for inheritance.

An Abstract Class is an incomplete class, users are not allowed to create its objects. To use such a class, programmers must derive it keeping in mind that they would only be either using or overriding the features specified in that class.

Example:

class Fruit:
    def taste(self):
        raise NotImplementError()
    def rich_in(self):
        raise NotImplementError()
    def colour(self):
        raise NotImplementError()
class Mango(Fruit):
    def taste(self):
        return "Sweet"
    def rich_in(self):
        return "Vitamin A"
    def colour(self):
        return "Yellow"
class Orange(Fruit):
    def taste(self):
        return "Sour"
    def rich_in(self):
        return "Vitamin C"
    def colour(self):
        return "Orange"
Alphanso=Mango()
print(Alphanso.taste(), Alphanso.rich_in(), Alphanso.colour())
Org=Orange()
print(Org.taste(), Org.rich_in(), Org.colour())

Output: