Problem subclassing tuple

[John Wilson]

----- Original Message ----- 
From: "Aahz" <aahz at pythoncraft.com>
[snip]

>
> Use __new__ instead of __init__.
> -- 

I tried:

...    def __new__(cls, *args, **kargs):
...         instance = object.__new__(cls)
...         tuple.__init__(instance, args)
...

But I got:

>>> Holder(1, 2)
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "<stdin>", line 3, in __new__
TypeError: object.__new__(Holder) is not safe, use tuple.__new__()

I'm sure I'm being dense. Can you advise me as what to do in the __new__
method?

John Wilson
The Wilson Partnership
http://www.wilson.co.uk