Making Python extension DLL available to a C++ program

[Bulldog]

Is there anyway to make the functions defined in a python extension DLL directly available to a C++ program without having to embed that python interpreter in that C++ program?

TIA

[Motoma]

Is there anyway to make the functions defined in a python extension DLL directly available to a C++ program without having to embed that python interpreter in that C++ program?

TIA

Yes.
You will need to tell your linker to link against the associated .lib file.

[Motoma]

If that isn't an option (i.e. you don't have a lib file) you can link at run-time:
Using Run-Time Dynamic Linking.

[Bulldog]

Yes.
You will need to tell your linker to link against the associated .lib file.

I am fine with linking to the extension module's .lib file. The problem I have now is that the extension module example in the python doc ( I am using 2.2.3) only exports (using a .def file) the initexample function, not the 'useful' function example.foo(). Below is the source code for the example in the example_nt directory. so from the interpreter I can import the moduel example (example.ll) just fine and call the foo function (example.foo()), but from a c++ app, example and foo aren't visible. Any ideas?

**********************************************

#include "Python.h"
 
static PyObject *
ex_foo(PyObject *self, PyObject *args)
{
    printf("Hello, world\n");
    Py_INCREF(Py_None);
    return Py_None;
}
 
static PyMethodDef example_methods[] = {
    {"foo", ex_foo, 1, "foo() doc string"},
    {NULL, NULL}
};
 
void
initexample(void)
{
    Py_InitModule("example", example_methods);
}

**********************************************

[Motoma]

I am fine with linking to the extension module's .lib file. The problem I have now is that the extension module example in the python doc ( I am using 2.2.3) only exports (using a .def file) the initexample function, not the 'useful' function example.foo(). Below is the source code for the example in the example_nt directory. so from the interpreter I can import the moduel example (example.ll) just fine and call the foo function (example.foo()), but from a c++ app, example and foo aren't visible. Any ideas?

**********************************************
#include "Python.h"

static PyObject *
ex_foo(PyObject *self, PyObject *args)
{
printf("Hello, world\n");
Py_INCREF(Py_None);
return Py_None;
}

static PyMethodDef example_methods[] = {
{"foo", ex_foo, 1, "foo() doc string"},
{NULL, NULL}
};

void
initexample(void)
{
Py_InitModule("example", example_methods);
}

**********************************************

Sorry, this is beyond my current scope of knowledge, I will catch up on my reading and see if I can help you.

[Bulldog]

Sorry, this is beyond my current scope of knowledge, I will catch up on my reading and see if I can help you.

I am still interested in finding out how to do this but I figured out that using an extension module would NOT solve my problem. So I am back to square one. The reason is that the foo() function in the example from my previous post is C++ (Duh...) and any calls to python would have to be from an embedded interpreter, which is what I am trying to avoid. I guess I can try to discuss that in another thread.