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Python Object-Oriented Python Advanced Objects Double

Posted by sandeep singh
sandeep singh
70 Points

Not Happening !

neither overriding happening nor instance is being created help me with some coding instructions !!!

doubler.py 
class Double(int):
    def __new__(item):
        super().__new__(item)
        return self.item

nmbr = Double(5)
frankgenova
.a{fill-rule:evenodd;}techdegree
frankgenova
Python Web Development Techdegree Student 15,616 Points

Hi Sandeep, If I am reading the same challenge as you, they want you to accept arguments and keywords. That would mean you want 

def __new__(*args, *kwargs):
#and then go from there

1 Answer

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,457 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,457 Points

As Frank mentioned, the parameters need to be *args, **kwargs. Calling the __new__ method returns an object. That object should be returned:

class Double(int):
    def __new__(*args, **kwargs):
        bob = super().__new__(*args, **kwargs)
        return bob

However, using super does not seem to work in this challenge (I've messaged Kenneth Love about it). Use the class name directly:

class Double(int):
    def __new__(*args, **kwargs):
        bob = int().__new__(*args, **kwargs)
        return bob

And you don't have to use "bob" :-)