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[Python-Dev] Tuple/list assignment question

Dave Cole djc at object-craft.com.au
Wed Aug 4 01:55:49 CEST 2004 
Nick Coghlan wrote:
> Dave Cole wrote:
> 
>> Is there any reason why something like this would not be a good idea?
>>
>>  >>> a_list = [1, 2, 3, 4, 5]
>>  >>> a, b, *c = a_list
>>
>> You could then do things like this:
>>
>>  >>> lol = [[1, 2], [3, 4, 5, 6, 7], [8, 9, 10, 11, 12, 13]]
>>  >>> for a, b *c in lol:
>> ...
>>
>> - Dave
>>
> 
> As opposed to:
> 
>  >>> for a, b, c in ((x[0], x[1], x[2:]) for x in lol): print a, b, c

Yes, as opposed to.

> With generator expressions around, I don't know that this case is common 
> enough for special casing. . .

This begs the question; do you prefer:

 >>> args = [4, 5, 6]
 >>> a_func(1, *args)

or this:

 >>> args = [4, 5, 6]
 >>> apply(a_func, [1] + args)

- Dave

-- 
http://www.object-craft.com.au
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