overriding a tuple's __init__

[Simon Burton]

On Mon, 18 Aug 2003 08:24:21 +0000, Duncan Booth wrote:

> Simon Burton <simonb at webone.com.au> wrote in 
> news:pan.2003.08.18.07.37.44.108933 at webone.com.au:
> 
>>>>> class pair(tuple):
>> ...   def __init__(self,a,b):
>> ...     tuple.__init__(self, (a,b) )
>> ... 
>>>>> a=pair(1,2)
>> Traceback (most recent call last):
>>   File "<stdin>", line 1, in ?
>> TypeError: tuple() takes at most 1 argument (2 given)
>>>>> 
>> 
>> What gives? (yes it works with a list, but i need immutable/hashable)
> 
> You need to override __new__ instead of __init__:
> 

:) I need to grow a brain. thanks Duncan.

Simon.