tuxfood |
01-09-2006 05:06 AM |
Problem writing an extension for python!
hi ..
I was reading the tutorial "Extending and Embedding the python interpreter" available with python ..
http://www.python.org/doc/2.2.3/ext/ext.html
As per given in the tutorial i created an interface to the system() system call.
this is the code of my module
Code:
#include<Python.h>
static PyObject * spam_system(self,args)
{
PyObject * self;
PyObject * args;
char * command;
int sts;
if ( !PyArg_ParseTuple(args, "s" , &command))
return NULL;
sts = system(command);
return Py_BuildValue("i",sts);
}
static PyMethodDef SpamMethods[] = {
{ "system", spam_system , METH_VARARGS,"Execute a shell command"},
{NULL,NULL,0,NULL}
};
void initspam(void){
(void) Py_InitModule("spam", SpamMethods);
}
int main(int argc,char **argv)
{
// Py_SetProgName(argv[0]);
/* I COMMENTED THE ABOVE CALL AS IT GAVE ME SOME WIERD ERROR */
Py_Initialize();
initspam();
}
i was able to compile the above code using disutils package available with python .
http://www.python.org/doc/2.2.3/ext/building.html
I was even able to import the module into the python interpreter but caling the function gave me the following error
Code:
>>>import spam
>>>spam.system("ls -l")
python: Python/getargs.c:90: vgetargs1: Assertion `compat || (args != (PyObject*)((void *)0))' failed.
Aborted
[haynes@fosters:~/python]
whaaaaattttt????
any idea?
thnks
tuxfood
|