#include <Python.h>

static PyObject *SpamError;

static PyObject *

spam_system(PyObject *self, PyObject *args)

{

const char *command;

int sts;

if (!PyArg_ParseTuple(args, "s", &command))

return NULL;

sts = system(command);

if (sts < 0) {

PyErr_SetString(SpamError, "System command failed");

return NULL;

}

return PyLong_FromLong(sts);

}

static PyMethodDef SpamMethods[] = {

{"system", spam_system, METH_VARARGS,

"Execute a shell command."},

{NULL, NULL, 0, NULL} /* Sentinel */

};

static struct PyModuleDef spammodule = {

PyModuleDef_HEAD_INIT,

"spam", /* name of module */

NULL, /* module documentation, may be NULL */

-1, /* size of per-interpreter state of the module,

or -1 if the module keeps state in global variables. */

SpamMethods

};

PyMODINIT_FUNC

PyInit_spam(void)

{

PyObject *m;

m = PyModule_Create(&spammodule);

if (m == NULL)

return NULL;

SpamError = PyErr_NewException("spam.error", NULL, NULL);

Py_INCREF(SpamError);

PyModule_AddObject(m, "error", SpamError);

return m;

}