[Python-Dev] _length_cue()
Nick Coghlan
ncoghlan at gmail.com
Fri Feb 10 14:21:52 CET 2006
Armin Rigo wrote:
> Indeed, I don't foresee any place where it would help apart from the
> __repr__ of the iterators, which is precisely what I'm aiming at. The
> alternative here would be a kind of "smart" global function that knows
> about many built-in iterator types and is able to fish for the data
> inside automatically (but this hits problems of data structures being
> private). I thought that __getitem_cue__ would be a less dirty
> solution. I really think a better __repr__ would be generally helpful,
> and I cannot think of a 3rd solution at the moment... (Ideas welcome!)
Do they really need anything more sophisticated than:
def __repr__(self):
return "%s(%r)" % (type(self).__name__, self._subiter)
(modulo changes in the format of arguments, naturally. This simple one would
work for things like enumerate and reversed, though)
If the subiterators themselves have decent repr methods, the top-level repr
should also look reasonable.
Cheers,
Nick.
--
Nick Coghlan | ncoghlan at gmail.com | Brisbane, Australia
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http://www.boredomandlaziness.org
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