8.7. C Modules¶
8.7.1. Code¶
Przykład kodu w C wykorzystującego C modules:
#include <Python.h>
/* Implementation */
static PyObject* say_hello(PyObject* self, PyObject* args) {
const char* name;
if (!PyArg_ParseTuple(args, "s", &name))
return NULL;
printf("Hello %s!\n", name);
Py_RETURN_NONE;
}
static PyObject* version(PyObject* self) {
return Py_BuildValue("s", "Version 1.0");
}
/* Python Binding Definitions */
static PyMethodDef HelloMethods[] = {
{"say_hello", say_hello, METH_VARARGS, "Greet somebody."},
{"version", (PyCFunction)version, METH_NOARGS, "returns the version"},
{NULL, NULL, 0, NULL}
};
static struct PyModuleDef hello = {
PyModuleDef_HEAD_INIT,
"hello", /* name of module */
"", /* module documentation, may be NULL */
-1, /* size of per-interpreter state of the module, or -1 if the module keeps state in global variables. */
HelloMethods
};
PyMODINIT_FUNC PyInit_hello(void) {
return PyModule_Create(&hello);
}
8.7.2. Compile¶
setup.py:
import sys
from distutils.core import setup, Extension
print('Building for Python 3')
module = Extension('hello', sources = ['mylib-cmodules.c'])
setup(
name = 'hello',
version='1.0',
description = 'Ehlo World!',
ext_modules = [module])
Execute:
$ python setup.py build
$ cd build/lib*
$ python
Run:
import hello
hello.say_hello('José Jiménez')
# José Jiménez