[Python-Dev] a feature i'd like to see in python #2: indexing of match objects (original) (raw)

Georg Brandl g.brandl at gmx.net
Sun Dec 3 22:42:26 CET 2006

Fredrik Lundh wrote:

Martin v. Löwis wrote:

I know what the Zen says about special cases, but in this case the rules were apparently broken with impunity. Well, the proposal was to interpret m[i] as m.group(i), for all values of i. I can't see anything confusing with that. it can quickly become rather confusing if you also interpret m[:] as m.groups(), not to mention if you add len() and arbitrary slicing to the mix. what about m[] and m[i,j,k], btw?

What about them? They aren't supposed to be supported by every object that allows subscript, are they? And why not just not implement len()?

As for the [:] <-> groups() issue, [:] would have to be consistent with indexing and return the whole match and the subgroups.

(Or, the API could be overhauled completely of course, remember it's Py3k.)

Georg

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