[C++-sig] call python iterable (handle StopIteration?)

[Stefan Seefeld]

Neal Becker wrote:
> I want to call a python iterable from c++.  Can I do this?
>   while (true) {
>     T n = extract<T> (o.attr ("next")());
>     tmp.push_back (n);
>   }
> 
> How do I (can I?) catch the StopIteration exception? 

Assuming boost.python does not have special provisions for
any particular exception type you'd need to catch error_already_set
and then query (using the python C API) the exact exception type in
order to break out of the loop.
It would be worthwhile thinking about better handling of this (as
well as adding more exception-related APIs) for 1.35... </wink>

Regards,
		Stefan

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