1  #define PY_SSIZE_T_CLEAN
       2  #include <Python.h>
       3  
       4  int
       5  main(int argc, char *argv[])
       6  {
       7      PyObject *pName, *pModule, *pFunc;
       8      PyObject *pArgs, *pValue;
       9      int i;
      10  
      11      if (argc < 3) {
      12          fprintf(stderr,"Usage: call pythonfile funcname [args]\n");
      13          return 1;
      14      }
      15  
      16      Py_Initialize();
      17      pName = PyUnicode_DecodeFSDefault(argv[1]);
      18      /* Error checking of pName left out */
      19  
      20      pModule = PyImport_Import(pName);
      21      Py_DECREF(pName);
      22  
      23      if (pModule != NULL) {
      24          pFunc = PyObject_GetAttrString(pModule, argv[2]);
      25          /* pFunc is a new reference */
      26  
      27          if (pFunc && PyCallable_Check(pFunc)) {
      28              pArgs = PyTuple_New(argc - 3);
      29              for (i = 0; i < argc - 3; ++i) {
      30                  pValue = PyLong_FromLong(atoi(argv[i + 3]));
      31                  if (!pValue) {
      32                      Py_DECREF(pArgs);
      33                      Py_DECREF(pModule);
      34                      fprintf(stderr, "Cannot convert argument\n");
      35                      return 1;
      36                  }
      37                  /* pValue reference stolen here: */
      38                  PyTuple_SetItem(pArgs, i, pValue);
      39              }
      40              pValue = PyObject_CallObject(pFunc, pArgs);
      41              Py_DECREF(pArgs);
      42              if (pValue != NULL) {
      43                  printf("Result of call: %ld\n", PyLong_AsLong(pValue));
      44                  Py_DECREF(pValue);
      45              }
      46              else {
      47                  Py_DECREF(pFunc);
      48                  Py_DECREF(pModule);
      49                  PyErr_Print();
      50                  fprintf(stderr,"Call failed\n");
      51                  return 1;
      52              }
      53          }
      54          else {
      55              if (PyErr_Occurred())
      56                  PyErr_Print();
      57              fprintf(stderr, "Cannot find function \"%s\"\n", argv[2]);
      58          }
      59          Py_XDECREF(pFunc);
      60          Py_DECREF(pModule);
      61      }
      62      else {
      63          PyErr_Print();
      64          fprintf(stderr, "Failed to load \"%s\"\n", argv[1]);
      65          return 1;
      66      }
      67      if (Py_FinalizeEx() < 0) {
      68          return 120;
      69      }
      70      return 0;
      71  }