ref: a0fc6008c6714e73cd44501d2b6831ca7740b914
dir: /sys/src/cmd/python/Doc/ext/shoddy.c/
#include <Python.h>
typedef struct {
    PyListObject list;
    int state;
} Shoddy;
static PyObject *
Shoddy_increment(Shoddy *self, PyObject *unused)
{
    self->state++;
    return PyInt_FromLong(self->state);
}
static PyMethodDef Shoddy_methods[] = {
    {"increment", (PyCFunction)Shoddy_increment, METH_NOARGS,
     PyDoc_STR("increment state counter")},
    {NULL,	NULL},
};
static int
Shoddy_init(Shoddy *self, PyObject *args, PyObject *kwds)
{
    if (PyList_Type.tp_init((PyObject *)self, args, kwds) < 0)
        return -1;
    self->state = 0;
    return 0;
}
static PyTypeObject ShoddyType = {
    PyObject_HEAD_INIT(NULL)
    0,                       /* ob_size */
    "shoddy.Shoddy",         /* tp_name */
    sizeof(Shoddy),          /* tp_basicsize */
    0,                       /* tp_itemsize */
    0,                       /* tp_dealloc */
    0,                       /* tp_print */
    0,                       /* tp_getattr */
    0,                       /* tp_setattr */
    0,                       /* tp_compare */
    0,                       /* tp_repr */
    0,                       /* tp_as_number */
    0,                       /* tp_as_sequence */
    0,                       /* tp_as_mapping */
    0,                       /* tp_hash */
    0,                       /* tp_call */
    0,                       /* tp_str */
    0,                       /* tp_getattro */
    0,                       /* tp_setattro */
    0,                       /* tp_as_buffer */
    Py_TPFLAGS_DEFAULT |
      Py_TPFLAGS_BASETYPE,   /* tp_flags */
    0,                       /* tp_doc */
    0,                       /* tp_traverse */
    0,                       /* tp_clear */
    0,                       /* tp_richcompare */
    0,                       /* tp_weaklistoffset */
    0,                       /* tp_iter */
    0,                       /* tp_iternext */
    Shoddy_methods,          /* tp_methods */
    0,                       /* tp_members */
    0,                       /* tp_getset */
    0,                       /* tp_base */
    0,                       /* tp_dict */
    0,                       /* tp_descr_get */
    0,                       /* tp_descr_set */
    0,                       /* tp_dictoffset */
    (initproc)Shoddy_init,   /* tp_init */
    0,                       /* tp_alloc */
    0,                       /* tp_new */
};
PyMODINIT_FUNC
initshoddy(void)
{
    PyObject *m;
    ShoddyType.tp_base = &PyList_Type;
    if (PyType_Ready(&ShoddyType) < 0)
        return;
    m = Py_InitModule3("shoddy", NULL, "Shoddy module");
    if (m == NULL)
        return;
    Py_INCREF(&ShoddyType);
    PyModule_AddObject(m, "Shoddy", (PyObject *) &ShoddyType);
}