PYTHON 与C相互交互调用实例解析

使用前工具：

Vc++编译器

Python 解释器

如没有装VC，可以去微软网站下一个C++的编译器，地址如下：

http://download.microsoft.com/download/3/9/b/39bac755-0a1e-4d0b-b72c-3a158b7444c4/VCToolkitSetup.exe

装完后，在环境变量中把PYTHON的INCLUDE和LIBS分别加入下面2个宏

INCLUDE

LIB

1、C中调用PYTHON

#include <Python.h>

int main(int argc, char *argv[])

{

Py_Initialize();

PyRun_SimpleString("from time import time,ctime\n"

"print 'Today is',ctime(time())\n");

Py_Finalize();

return 0;

}

直接用CL 文件名编译就是

2、用C生成DLL,用PYTHON调用

C代码：如FOO.C

#include <Python.h>

/* Define the method table. */

static PyObject *foo_bar(PyObject *self, PyObject *args);

static PyMethodDef FooMethods[] = {

{"bar", foo_bar, METH_VARARGS},

{NULL, NULL}

};

/* Here's the initialization function. We don't need to do anything

for our own needs, but Python needs that method table. */

void initfoo()

{

(void) Py_InitModule("foo", FooMethods);

}

/* Finally, let's do something ... involved ... as an example function. */

static PyObject *foo_bar(PyObject *self, PyObject *args)

{

char *string;

int len;

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

return NULL;

len = strlen(string);

return Py_BuildValue("i", len);

}

C定义文件：foo.def

EXPORTS

initfoo

编译生成foo.dll

Cl -c foo.c;

link foo.obj /dll /def:foo.def /OUT:foo.dll

在PYTHON中调用：

Import foo

Dir(foo)

…

即可以看到结果：

>>> import foo

>>> dir(foo)

['__doc__', '__file__', '__name__', 'bar']

>>> ^Z

(注：文章然简单，但很适合初学者，还请笑纳：） )