Boost Python : Having problems importing a module
boost, boost-python, c++, python
Solution
The convention for naming the module initialization function is:
- `init***` for Python 2.x (no underscore).
- `PyInit_***` for Python 3.x.
Boost.Python's `BOOST_PYTHON_MODULE` macro follows these conventions.
Since you're using Python 3.2, the initialization function of your `PyBackend` module will therefore be called:
`PyInit_PyBackend`.
Note that for modules with names starting with an underscore, like `_sre`, the init functions are `init_sre`/`PyInit__sre` (notice two underscores for Python 3.x).
Problem
I'm currently trying to use Boost Python to export a class, and then use it in the corresponding the program. ``` /** main.cpp */ #define BOOST_PYTHON_STATIC_LIB #include <Resource\ZipResourceFile.hpp> #include <Resource\ResourceCache.hpp> #include <Windows.h> #include <boost/python.hpp> #include <iostream> /* a simple add method, for s & g's */ int add(int a, int b) { return a + b; } /* Foo class*/ class Foo { public: Foo(int n); ~Foo(); void f(); }; /* Foo ctor, does nothingm just wanted to pass and arg */ Foo::Foo(int n) { } /* destructor */ Foo::~Foo() { } /* f() implementation, calls Foo!!! to cout */ void Foo::f() { std::cout << "Foo!!!" << '\n'; } /* Boost python module definition */ BOOST_PYTHON_MODULE(PyBackend) { using namespace boost::python; def("add", add); class_<Foo>("Foo", init<int>()) .def("f", &Foo::f); } int main(int argc, char* argv[]) { PyImport_AppendInittab("PyBackend", init_PyBackend); Py_Initialize(); PyRun_SimpleString("import PyBackend"); PyRun_SimpleString("foo = PyBackend.Foo(1)"); Py_Finalize(); { int n; std::cin >> n; } return 0; } ``` Anyhow, I have no idea where i can find the function init_PyBackend, even though that seems the logical thing I would call if I wasn't using Boost.Python. The module itself isn't in a seperate DLL, it's compiled all at the same time. Anyway, anyone have any ideas on what I can do?