I have wondered about this on and off but I never really got a definite answer. Is it possible within the boost.python framework to link against another boost.python module. 
For example I have exported class A within boost_python_module(libA) and function B(A a) within boost_python_module(libB). Is it possible to specify in libB to link to A of libA. 
The other way of looking at this problem would be that right now I  have to  generate all my bindings in one shot within one module. Is it possible to generate bindings incrementally over several boost_python_module.
I don't know well shared library, but what works for me is to import all my modules, which can reference with each others, within python: import libA; import libB.
It is of course possible to put these imports in an __init__.py file, so that whitin python you just have to do: import myLib.
How to link to existing boost python module