CODEWITHSUNDEEP
python-3.xinheritancesubclassing
Allwyn Joseph
Allwyn Joseph

Reputation: 21

Class inheritance python 3.6 : Similar methods

I'm not the strongest pillar when it comes to class inheritance, so here goes my rather silly question. Following the code below, I would logically assume that after the 'super' call, the pointer arrives at self.example() which would in turn refer to the 'example' method in the same class and value 20 will be printed. 

class A(object):
    def __init__():
        self.example()
    def example(self):
        print(20)

class B(A):
    def __init__():
       super().__init__()
    def example(self):
        print(10)

x = B()

Result : 10

This clearly isn't the case and 10 is printed instead. Could someone please shed some light on the mysterious world of class inheritance.

Upvotes: 1

Views: 541

Answers (1)

Guaz
Guaz

Reputation: 189

class A(object):
    def __init__():
        self.example()
    def example(self):
        print(20)

class B(A):
    def __init__():
       super().__init__()

x = B()
x.example()

Look for this, at example.

When you inherit B, from A, then method example is inheritated to B, you not must rewrite this to B. Of course still you can write this method for B, then you will override 'A' method, for objects of class B.

You also can use one class to Inheritance with many others:

class Base(object):
    def __init__(self):
        print("Base created")

class ChildA(Base):
    def __init__(self):
        Base.__init__(self)

class ChildB(Base):
    def __init__(self):
        super(ChildB, self).__init__()

ChildA()
ChildB()

ChildB have another call which is equivalent to that used in example above.

Upvotes: 1

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