[Python-Dev] Py2.6 ideas

[Nick Coghlan]

Martin v. Löwis wrote:
> Nick Coghlan schrieb:
>>> I'd like to repeat Guido's question: Why does this still need to 
>>> support the tuple interface (i.e. indexed access)?
>>
>> So that it remains interoperable with existing libraries that expect a 
>> tuple? Otherwise you'd be casting (and copying) every time you needed 
>> to pass it to something that used indexed access.
> 
> Can you give a few example, for libraries where this isn't already done?

I don't have any specific examples of that, no - that's why I phrased it 
as a question.

However, another aspect that occurred to me is that inheriting from 
tuple has significant practical benefits in terms of speed and memory 
consumption, at which point it doesn't seem worthwhile to *remove* the 
indexing capability.

I suppose you *could* write a completely new C-level record class, but 
given that Raymond's NamedTuple class gets good performance from a 
Python implementation, rewriting it in C seems like wasted effort.

Regards,
Nick.

-- 
Nick Coghlan   |   ncoghlan at gmail.com   |   Brisbane, Australia
---------------------------------------------------------------
             http://www.boredomandlaziness.org