is parameter an iterable?

[py]

Dan Sommers wrote:
> Just do it.  If one of foo's callers passes in a non-iterable, foo will
> raise an exception, and you'll catch it during testing

That's exactly what I don't want.  I don't want an exception, instead I
want to check to see if it's an iterable....if it is continue, if not
return an error code.  I can't catch it during testing since this is
going to be used by other people.

Thanks for the suggestion though.