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help with extending python


I'd appreciate some help figuring out what I might be doing wrong. I am
trying to extend Python to add some modules. However, when the code
appended below runs, the conversion always fails (returns -1), and I
get a TypeError

So the usage is like this:
import PyTest_itsFsm
a = [(10,True)]
PyTest_itsFsm.p ytestprimitive( a)
the int is -1
bool is -1
in primitive test op with arg1 -1and arg 2183
1 TypeError: an integer is required

The PyMethodDef looks as below:
static PyMethodDef PyTest_itsFsmMe thods[] = {
{"pytestprimiti ve", PyTest_itsFsm_p ytestprimitive,
METH_VARARGS, "pytestprimitiv e"},

And the method I've added looks like this:
static PyObject * PyTest_itsFsm_p ytestprimitive( PyObject * self,
PyObject *args) { int arg1;
(!PyArg_ParseTu ple(args,"O&",c onvert_pytestpr imitive_arg1,&a rg1))
return NULL;
bool arg2;
(!PyArg_ParseTu ple(args,"O&",c onvert_pytestpr imitive_arg2,&a rg2))
return NULL;
Finally, the convert functions:

PyTest_itsFsm:: pytestpint convert_pytestp rimitive_arg1 (PyObject * ob,
void * addr )
// this routine should convert the PyObject * to int for argument
arg1 int * p = (int *) addr;
printf ("ready to parse in convert function\n");

*p = PyInt_AsLong (ob);
printf ("the int is %d\n",*p);
if (PyErr_Occurred ())
return -1;

return 1;
int convert_pytestp rimitive_arg2 (PyObject * ob, void * addr )
// this routine should convert the PyObject * to bool for argument
arg2 bool * b = (bool *) addr;

int x;
x = PyInt_AsLong (ob);
printf ("bool is %d\n", (int) x);
if (PyErr_Occurred () )
return -1;
*b = (bool )PyBool_FromLon g (x);
return 1;

Jul 19 '05 #1
0 1249

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