Re: [boost] [python] can I stop iteration without exception being thrown?

From: Stefan Seefeld (seefeld_at_[hidden])
Date: 2008-06-10 15:58:21

Gennadiy Rozental wrote:
> Hi,
>
> I an using vector_indexing_suite for both standard containers export and for our
> in-house ones. I've noticed that boost::python::error_already_set is bwing
> thrown every time iteration in python over container instances is about to
> finish. The exception is ignored somewhere inside boost::python but it's still
> quite inconvenient for debugging: I want to catch actual error, but can't skip
> 100s of fake ones. Is there any reason why it was designed this way? Is there
> any way to avoid it?
>   

A 'StopIteration' exception is the mechanism by which Python terminates 
an iteration. This exception is certainly not ignored. It is simply 
translated and handed over to the Python runtime. I'm not sure I 
understand how that gets into the way of debugging.
However, you don't need to use iterators to traverse a container. Simply 
fetching a container's size and then use the usual operator[] works 
fine, too (though it might well be slower).

Regards,
       Stefan

-- 
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