PyBindGen

How can I pass a cpp exception into python

Asked by Stefan Stiene

Hi,
how can I pass a cpp exception to python. I want to be able to catch the exception on python side with a

try
    myWrapperfunction
except Exception:
    ...

Is this possible?

stefan

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PyBindGen Edit question
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Solved by:
Gustavo Carneiro
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Best Gustavo Carneiro (gjc) said : 		#1

There are some unit tests that do that (see tests/foomodulegen.py). Example catch your own custom exception:

    Error = mod.add_exception('Error')
    DomainError = mod.add_exception('DomainError', parent=Error)
    mod.add_function('my_inverse_func', 'double', [Parameter.new('double', 'x')],
                     throw=[DomainError])

Example to catch a std::exception:

    std_exception = mod.add_exception('exception', foreign_cpp_namespace='std', message_rvalue='%(EXC)s.what()')
    mod.add_function('my_inverse_func2', 'double', [Parameter.new('double', 'x')],
                     throw=[std_exception])
    ClassThatThrows.add_method('my_inverse_method2', 'double', [Parameter.new('double', 'x')],
                               throw=[std_exception])

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Stefan Stiene (sstiene) said : 		#2

Thanks Gustavo Carneiro, that solved my question.