How does this Python inheritance code works?

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I was trying one code of Python Inheritance but the code doesn't work, not sure why

What I have tried:

Here is what my code looks like -

class Animal(object):
    def __init__(self, nlegs=4):
        print '__init__ Animal'
        self.nlegs = nlegs

class Dog(Animal):
    def __init__(self, talk='Bahu Bhau'):
        print '__init__ Dog'
        self.talk = talk

class Goat(Animal):
    def __init__(self, talk='Bha Bha'):
        print '__init__ Goat'
        self.talk = talk

1. Why does my Dog not have n legs attribute.
2. Should I call Animal.__init__() from within Dog.__init__
3. What if I want to create a Dog with 6 Legs, is it needed to add additional arguments to the Dog.__init__ interface?

Any idea what is wrong with this code. This is actually a practice question that I was trying to solve, tried to search/dig multiple places and read this article on Python Inheritance to understand the issue behind this code but no luck.

Posted 26-Apr-22 2:21am

Shruti Bongale

Updated 26-Apr-22 4:01am

v6

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Richard Deeming 26-Apr-22 8:37am

If you want someone to help you solve a problem with your code, you need to describe what the problem is. Simply saying it "doesn't work" tells us nothing.

Click the green "Improve question" link and update your question to include a clear description of the problem, including the full details of any errors. Remember to indicate which line of your code the errors relate to.

Shruti Bongale 26-Apr-22 9:04am

have improved the question.

1 solution

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CPallini · Accepted Answer · 2022-04-26T02:44:00

Solution 1

Inheritance at work (see Python Inheritance[^]):

Python

class Animal(object):
    def __init__(self, nlegs=4):
        self.nlegs = nlegs

class Dog(Animal):
    def __init__(self, talk='Bahu Bhau'):
        Animal.__init__(self)
        self.talk = talk

class Crow(Animal):
    def __init__(self, talk='Ka Ka'):
        Animal.__init__(self,2)
        self.talk = talk


c = Crow()
print(c.talk)
print(c.nlegs)

Posted 26-Apr-22 2:44am

CPallini

Updated 26-Apr-22 3:02am

v2

Comments

Richard MacCutchan 26-Apr-22 8:50am

I didn't realise Italian crows had four legs. :)

CPallini 26-Apr-22 9:04am

Neither did I. :-D

BTW thank you.

Shruti Bongale 26-Apr-22 9:06am

Now with some special power, the Crow has transformed into Goat #LoL ;)

CPallini 26-Apr-22 14:24pm

The power of the OOP!
:-D