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Indicates how to export a custom exception class from C ++, and how the exception class is exported How can I do the exception of Python? It exposes an exception class that has custom methods for receiving the information and that category has been obtained with the exception of Python.

A practical solution, rather than receiving from the wrapped C ++ recommended by Jim Bosch, of the structure To use The code should be made to be a python exception as is done, and then add a C ++ exception wrapped as an example variable of the Python exception. 

  Zero Translator (const MyCPPException & x) {BP :: Object Ex (X); // C + Exception: BP :: Object exc_t Wrap (BP :: Handle : (BP :: Credit (exception type)); Exc_t.attr ("cause") = exc; // Python exception add wrapped exceptions PyErr_SetString (exceptionType, x.what ()); }

Wrapped C ++ exception can be accessed from Python in such a way: 

  Try: MyModule.MyCPPExceptionType e: Reason = E

But the exception here will also be caught 

  Try: ... except the exception: ...

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