Basic misunderstanding on object creation

[Thomas Rachel]

Am 13.05.2015 um 15:25 schrieb andrew cooke:

>>>> class Foo:
> ...     def __new__(cls, *args, **kargs):
> ...         print('new', args, kargs)
> ...         super().__new__(cls, *args, **kargs)

> new (1,) {}
> Traceback (most recent call last):
>    File "<stdin>", line 1, in <module>
>    File "<stdin>", line 4, in __new__
> TypeError: object() takes no parameters

object's __new__() dosn't take any parameters. So call it without arguments:

class Foo:
     def __new__(cls, *args, **kargs):
         print('new', args, kargs)
         super().__new__(cls)

(at least if we know that we inherit from object. Might be that this one 
doesn't work very good with multiple inheritance...)


Thomas