CODEWITHSUNDEEP
pythoninheritanceconstructor
Dimitri Coukos
Dimitri Coukos

Reputation: 119

Calling Parent Constructor on Subclass instance

If I remember correctly, in C++ it is possible to call a parent's class's constructor on a subclass's instance, so that an instance of the parent class will be created so that only the overlapping attributes will be copied over. Does such a functionality exist in python such that the following 'python' code would do the same?

If I have a parent class Fruit

class Fruit():
    def __init__(self, color):
        self.color = color

and a child class Apple

class Apple(Fruit):
    def __init__(self, color, seeds):
        self.seeds = seeds
        super().__init__(color)

You could do

an_apple = Apple('red', 42)
a_fruit = Fruit(an_apple)

and get a red fruit.

Upvotes: 0

Views: 38

Answers (1)

quamrana
quamrana

Reputation: 39364

The only think I can think of is to make a Factory Method:

class Fruit():
    def __init__(self, color):
        self.color = color
    @staticmethod
    def MakeFruit(aFruit):
        return Fruit(aFruit.color)

usage:

an_apple = Apple('red', 42)  #assuming Apple as before
a_fruit = Fruit('blue')
a_red_fruit = Fruit.MakeFruit(an_apple)

Upvotes: 1

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