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如何用C写python库

Veröffentlicht am |

还是比较简单的，这次就权当入个门吧

  1. 写好一个C函数

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    #include<stdio.h>
    #include<python2.7/Python.h> //默认python版本就是#include<Python.h>
    static PyObject *hellozkw(PyObject *self, PyObject *args) {
        int num;
        //解析参数
        if (!PyArg_ParseTuple(args, "i", &num)) {
            return Py_BuildValue("i", -1);
        }   
        printf("hello zkw %d\n", num);                                                                                                                                                   
        return Py_BuildValue("i", NULL);
    }
    static PyMethodDef HMethods[] = { 
        //方法名，导出函数，参数传递方式，方法描述。
        {"hellozkw", hellozkw, METH_VARARGS, "hahahaha.... from zkw's hello"},
        {NULL, NULL, 0, NULL}
    };
    void inithello(void) {
        (void) Py_InitModule("hello", HMethods);
    }

  2. 准备一个setup文件

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    #!/usr/bin/env python
    # coding=utf-8
    from distutils.core import setup, Extension
    module = Extension('hello', sources = ['hello.c'])
                                                                                                                                                                                         
    setup(name = 'hello test', version = '1.0', ext_modules = [module])

  3. Makefile文件

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    publish:
        python setup.py build
        python setup.py install

  4. 运行make publush

  5. 运行即可
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    >>> import hello
    >>> ret = hello.hellozkw(123)
    hello zkw 123
    >>> ret
    0