Nico Blanke <n.blanke@gmx.net> writes:
Hi there!
Since I read much documentation, and talked to many people on IRC regarding my Problem, I now post it here, because no one can help me.
Nico, The best place for Boost.Python questions is the C++-sig: http://www.boost.org/more/mailing_lists.htm#cplussig
Here is the Source of my C++ App :
#include <boost/python.hpp> #include <iostream> using namespace boost::python;
void test() { std::cout << "Hello World!" << std::endl; }
BOOST_PYTHON_MODULE(test) { def("test", &test); }
int main() { Py_Initialize(); std::cout << "INITIALIZED" << std::endl; init_module_test(); std::cout << "MODULE LOADED" << std::endl; FILE * fp; fp = fopen ("test.py","r"); std::cout << "created fp" << std::endl; PyRun_AnyFile(fp, "test.py"); Py_Finalize(); std::cout << "Called PyRun" << std::endl; fclose(fp); }
Running this code results in 'Aborted' on init_module_test() ;
Boost.Python doesn't support Py_Finalize, but that's not your problem. Your problem is that Boost.Python is throwing an exception at you but you have no try/catch block and no way to report it:
here's the GDB Output :
<snip>
#58 0xb7fce568 in ?? () #59 0x0804a10c in ?? () #60 0x08048f88 in init_module_test () #61 0xb7e780f4 in std::terminate () from /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.4/libstdc++.so.5 #62 0xb7e78296 in __cxa_throw () ^^^^^^^^^^^^^^------- here from /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.4/libstdc++.so.5 #63 0xb7fbdb67 in boost::python::throw_error_already_set () from /usr/lib/libboost_python.so.1.32.0 #64 0xb7fb496b in boost::python::objects::function::add_to_namespace () from /usr/lib/libboost_python.so.1.32.0 #65 0xb7fb4a93 in boost::python::objects::function::add_to_namespace () from /usr/lib/libboost_python.so.1.32.0 #66 0xb7fb4c04 in boost::python::objects::add_to_namespace () from /usr/lib/libboost_python.so.1.32.0 #67 0xb7fbe170 in boost::python::detail::scope_setattr_doc () from /usr/lib/libboost_python.so.1.32.0 #68 0x08049165 in boost::python::def<void (*)()> () #69 0x08048f86 in init_module_test () #70 0x08048fa2 in main ()
I hope someone can help me to solve this problem, since I don't see what I did wrong.
Take your example from libs/python/test/embedding.cpp in your Boost distro. There you will find, e.g.: if (python::handle_exception(test)) { if (PyErr_Occurred()) PyErr_Print(); return 1; } If you put all the code in your main function (except the Py_Initialize call; do that first) inside void test() { .... } you'll be able to see what the error is. -- Dave Abrahams Boost Consulting www.boost-consulting.com