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Re: [Q] override __init__() method of classes implemented in C

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  Re: [Q] override __init__() method of classes implemented in C Chris Angelico <rosuav@gmail.com> - 2014-06-30 17:52 +1000

#73741 — Re: [Q] override __init__() method of classes implemented in C

On Mon, Jun 30, 2014 at 5:45 PM, Makoto Kuwata <kwa@kuwata-lab.com> wrote:
> Result (Python 2.7.7 and 3.4.1):
>
> Traceback (most recent call last):
>  File "hoge.py", line 7, in <module>
>    obj = Foo()
> TypeError: Required argument 'year' (pos 1) not found
>
>
> It seems to be failed to override datetime.__init__() in subclass.
>

Actually, __init__ isn't the problem here, __new__ is.

class Foo(datetime):
    def __new__(self):
        return super().__new__(self,2014,1,1)

>>> Foo()
Foo(2014, 1, 1, 0, 0)

Maybe that helps, maybe it doesn't, but the issue you're seeing is
specific to that class.

ChrisA

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