Boost Python Hello World example not working in Python
boost, boost-python, c++, python
Solution
AFAIK you have to change the extension of the DLL to `.pyd` or otherwise Python will not be able to load it. I think you can set a build option to automatically set the extension in VS, but I don't know for sure.
Also, make sure that the created extension is somewhere on the `PYTHONPATH`, the path, python will look for modules to load.
Problem
I'm having a great deal of trouble using my c++ code from Visual C++ (wrapped by boost) in Python. Alright, so the tools I'm using are: Visual Studio 2010, BoostPro 1_47, Windows 7, and Python 2.7 (32-bit). I have the following code which compiles nicely in Visual Studio 2010: ``` #define BOOST_PYTHON_STATIC_LIB #include <boost/python.hpp> using namespace boost::python; struct World { void set(std::string msg) { this->msg = msg; } std::string greet() { return msg; } std::string msg; }; BOOST_PYTHON_MODULE(hello) { class_<World>("World") .def("greet", &World::greet) .def("set", &World::set); } ``` It's in the format: Win32 Console Application >>>Empty Project / DLL. In "Project Properties": ``` VC++ DIRECTORIES: I added: >>> INCLUDE DIRECTORIES: C:\Program Files\boost\boost_1_47;C:\Python27\include . >>> LIBRARY DIRECTORIES: C:\Program Files\boost\boost_1_47\lib;C:\Python27\libs ``` All of this makes the c++ file build but then I can't access it from Python. This is what Python says when I try to use the module: ``` ">>> import hello Traceback (most recent call last): File "<pyshell#0>", line 1, in <module> import hello ImportError: No module named hello ``` So I guess my question is... How can I get Python to find it??? When the c++ code compiles it creates a DLL file. Do I have to change the location of the file? If so, where should I put it? Your help would be greatly appreciated