How to import python module from .so file?

Question

[me@hostname python]$ cat hello_world.cc #include <string> #include <Python.h> #include <boost/python.hpp>  namespace {   std::string greet() { return "Helloworld"; } }  using namespace boost::python;  BOOST_PYTHON_MODULE(hello_world) {   def("greet",greet); }  [me@hostnmae python]$ g++ -c -fPIC hello_world.cc -I/path/to/boost/headers -I/path/to/python/headers -o hello_world.o [me@hostname python]$ g++ -shared -Wl,-soname,libhello_world.so -o libhello_world.so  hello_world.o [me@hostname python]$ python Python 2.7.1 (r271:86832, Jan 10 2011, 09:46:57) [GCC 3.4.5 20051201 (Red Hat 3.4.5-2)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import sys >>> sys.path.append('.') >>> import hello_world Traceback (most recent call last):   File "<stdin>", line 1, in <module> ImportError: No module named hello_world >>> 

I created the .so file as shown above but I'm not able to import inside python. what am I missing?

Answer 1

take that 'hello_world.so' file and and make new python file (in the same dir) named as 'hello_world.py'. Put the below code in it.. .

def __bootstrap__():    global __bootstrap__, __loader__, __file__    import sys, pkg_resources, imp    __file__ = pkg_resources.resource_filename(__name__,'hello_world.so')    __loader__ = None; del __bootstrap__, __loader__    imp.load_dynamic(__name__,__file__) __bootstrap__() 

now you can import this hello_world as:

>>> import hello_world 

Answer 2

It must be called hello_world.so, not libhello_world.so.