在C ++应用程序中包含第三方python模块

Question

I am trying to build an application to parse netCDF4 files in c++.

What I have done:

• Succeeded in parsing the files in python scripts.

What I need help with:

• Including my python script as a module. When I run my C++ program it complains that it can't access numPy.

What I Know:

• I fixed the same issue with the netCDF4 by copying the netCDF4.pyd file where my c++ executable was located, but cannot find the numPy. equivalent.

Thanks for any suggestions.

Answer 1

Welcome to the community! I hope I understand the question correctly - is it importing a python module into c++? If that is so, try the following tutorial: Embedding Python in C/C++: Part I .

Basically, to paraphrase, DON'T use code conversion or translation - it is unnecessairly complex. Just make the python code communicate with the C code as follows. Kudos to website above for the code, comments by me.

#include <Python.h> //get the scripts to interact

int main(int argc, char *argv[])
 {
PyObject *pName, *pModule, *pDict, *pFunc, *pValue; //Arguments that are required.

if (argc < 3) 
{
    printf("Usage: exe_name python_source function_name\n");
    return 1;
}

// Allow your program to understand python
Py_Initialize();

// Initialize Name
pName = PyString_FromString(argv[1]);

// Import the module from python
pModule = PyImport_Import(pName);

// pDict is a borrowed reference 
pDict = PyModule_GetDict(pModule);

// same situiation as above 
pFunc = PyDict_GetItemString(pDict, argv[2]);

if (PyCallable_Check(pFunc)) 
{
    PyObject_CallObject(pFunc, NULL);
} else 
{
    PyErr_Print();
}

// Tidy Everything Up.
Py_DECREF(pModule);
Py_DECREF(pName);

// End interpreter
Py_Finalize();

return 0;
}

I suggest you read the above tutorial, though.

Hope this helps!