[Python-Dev] PEP for adding an sq_index slot so that any object, a or b, can be used in X[a:b] notation (original) (raw)

Thomas Wouters thomas at xs4all.net
Fri Feb 10 01:03:48 CET 2006

On Thu, Feb 09, 2006 at 03:39:46PM -0800, Aahz wrote:

Can you provide a couple of examples where you think you'd want index functionality but the name would be inappropriate?

Not really, or I wouldn't have had only a slight reservation :) There are many functioncalls and methodcalls that only take integers, though, and they all currently use int() on their argument. file.read, socket.recv, signal.signal, str.zfill/center/ljust -- basically anything that uses the 'i' PyArg_Parse* format specifier, which is quite a lot. For a great many of them it will not make sense to pass objects that don't have an appropriate int, but who knows howmany really mean to ask for index instead. I mostly voice the reservation to lure out people with actual reservations ;)

-- Thomas Wouters <thomas at xs4all.net>

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