On Fri, 10 Sep 2010 01:05:22 am Joel Goldstick wrote:
> On Thu, Sep 9, 2010 at 10:26 AM, Luke Paireepinart
>
> <rabidpoob...@gmail.com>wrote:
> > Shouldn't there be a way to do this without type checking? Duck
> > typing!
> >
> > Your post got me thinking. Maybe better to test if the object can
> > return
> an iter method. If it throws an error, then look at its value. If
> it doesn't, then its a list or a tuple
It's not clear what you mean by "return an iter method". Taken
literally, that would imply the object is a function. I think you
mean "*has* an iter method" -- except that's not right either:
>>> [].iter
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: 'list' object has no attribute 'iter'
Perhaps you mean an object which can be passed to iter(), but lots of
objects can do that, not just lists and tuples:
>>> iter("not a list or tuple")
<str_iterator object at 0xb7d3520c>
>>> iter({1: None, 2: "a", 4: 5})
<dict_keyiterator object at 0xb7d3420c>
--
Steven D'Aprano
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