Ok, I have a simple working example. It is actually much easier than I
thought, because no C compiler is involved at all (I was afraid about
object layout, vtables and other horrors), only C++.

I attached the example: it shows how to mimic a C++ class in python
through a C-like interface. The main difficulty is to be sure that your
object get deleted by the python interpreter, which means having a
__del__ function. The problem is that you cannot control how python will
destroy its things: it may "destroy" ctypes module before your object,
which is problematic since you need it to destroy your object. The idea
is to "force" python to keep everything in the namespace through a fake
second argument to the destructor.

http://docs.python.org/ref/customization.html (comments on __del__ ).

David

CC      = colorgcc
CXX     = colorgcc

LD      = g++

PYTHONINC       = -I/usr/include/python2.5
NUMPYINC        = -I/usr/lib/python2.5/site-packages/numpy/core/include

WARN    = -W -Wall

CFLAGS  = $(WARN) $(PYTHONINC) $(NUMPYINC)

hellocpp.so: hellocpp.o
        $(LD) -shared -o $@ $< -Wl,-soname,$@

hellocpp.o: hellocpp.cpp
        $(CXX) -c $(CFLAGS) -fPIC $<

clean:
        rm -f *.o
        rm -f *.so

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