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Embedding Python problem

Started by October 30, 2003 04:31 PM
1 comment, last by JackRabbit 21 years ago
Hi, I've been trying out embedding Python in a C++ program. I used the example program in the docs. I get the following error when it runs: Exception exceptions.TypeError: 'an integer is required' in 'garbage collection' ignored Fatal Python error: unexpected exception during garbage collection The script itself executes though, and runs without problems. But i dont understand why that error occurs. This is the python script it executes:

from time import time,ctime

def GetTheTime(a):
    print "Current time is ", ctime(time())
    print "Value passed was: ", a
   
And here is the C++ program that embedds Python:

#include <Python.h>

int
main(int argc, char *argv[])
{
    PyObject *pName, *pModule, *pDict, *pFunc;
    PyObject *pArgs, *pValue;
    int i;

    if (argc < 3) {
        fprintf(stderr,"Usage: call pythonfile funcname [args]\n");
        return 1;
    }

    Py_Initialize();
    pName = PyString_FromString(argv[1]);
    /* Error checking of pName left out */

    pModule = PyImport_Import(pName);
    Py_DECREF(pName);

    if (pModule != NULL) {
        pDict = PyModule_GetDict(pModule);
        /* pDict is a borrowed reference */

        pFunc = PyDict_GetItemString(pDict, argv[2]);
        /* pFun: Borrowed reference */

        if (pFunc && PyCallable_Check(pFunc)) {
            pArgs = PyTuple_New(argc - 3);
            for (i = 0; i < argc - 3; ++i) {
                pValue = PyInt_FromLong(atoi(argv[i + 3]));
                if (!pValue) {
                    Py_DECREF(pArgs);
                    Py_DECREF(pModule);
                    fprintf(stderr, "Cannot convert argument\n");
                    return 1;
                }
                /* pValue reference stolen here: */
                PyTuple_SetItem(pArgs, i, pValue);
            }
            pValue = PyObject_CallObject(pFunc, pArgs);
            Py_DECREF(pArgs);
            if (pValue != NULL) {
                printf("Result of call: %ld\n", PyInt_AsLong(pValue));
                Py_DECREF(pValue);
            }
            else {
                Py_DECREF(pModule);
                PyErr_Print();
                fprintf(stderr,"Call failed\n");
                return 1;
            }
            /* pDict and pFunc are borrowed and must not be Py_DECREF-ed */
        }
        else {
            if (PyErr_Occurred())
                PyErr_Print();
            fprintf(stderr, "Cannot find function \"%s\"\n", argv[2]);
        }
        Py_DECREF(pModule);
    }
    else {
        PyErr_Print();
        fprintf(stderr, "Failed to load \"%s\"\n", argv[1]);
        return 1;
    }
    Py_Finalize();
    return 0;
}
 
Im using Python 2.3.2, and DevC++ 4.9.8.4 with the gcc compiler. Anyone know what is wrong here ? Thanks EDIT: Im using a debug build of the Python lib, if that makes any difference. [edited by - JackRabbit on October 30, 2003 5:34:33 PM]
*BUMP*
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post your problem to comp.lang.python. Lots of python gurus there

--
Dustin

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