is_iterable function.

[Marc 'BlackJack' Rintsch]

On Thu, 26 Jul 2007 15:02:39 +0000, Neil Cerutti wrote:

> Based on the discussions in this thread (thanks all for your
> thoughts), I'm settling for:
> 
> def is_iterable(obj):
>   try:
>     iter(obj).next()
>     return True
>   except TypeError:
>     return False
>   except KeyError:
>     return False
> 
> The call to iter will fail for objects that don't support the
> iterator protocol, and the call to next will fail for a
> (hopefully large) subset of the objects that don't support the
> sequence protocol.

And the `next()` consumes an element if `obj` is not "re-iterable".

Ciao,
	Marc 'BlackJack' Rintsch