On 08/01/2012 09:07 AM, Glenn Ramsey wrote:
On 31/07/12 22:58, Jim Bosch wrote:
On 07/31/2012 06:14 PM, Glenn Ramsey wrote:
Using boost::python how can I create an a custom exception that is
derived from Python's Exception? The functionality I would like to get
by doing this is to provide additional methods for the catching code to
retrieve information from the exception.
The approach I've taken in the past (sorry, don't have an example
right now) is
to raise a true Python exception (from PyErr_NewException), and attach
your
Boost.Python-wrapped C++ exception to it as an instance variable.
Then put a
__getattr__ in the true Python exception that forwards to the
Boost.Python
object it holds.
I can try to reconstruct more details if needed, but hopefully that's
enough to
get you started.
Thanks, based on that I have done this, which seems to work, but I'm not
sure if it is entirely correct. I didn't need to implement __getattr__
and would be interested in seeing some more details of your approach.
Looks fine to me. I'm afraid I don't really have any more details - I
last did this a while ago, and I don't exactly remember where it was
anymore. But it seems pretty similar to what I did.
Jim
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