与python的扩展相对，嵌入是把Python解释器包装到C的程序中。这样做可以给大型的，单一的，要求严格的，私有的并且（或者）极其重要的应用程序内嵌Python解释器的能力。一旦内嵌了Python，世界完全不一样了。
C调用python中的函数：
hw.py：
#coding=utf8
def hw_hs(canshu):
return canshu
if __name__ == "__main__":
ccss = "I am hw"
print hw_hs(ccss)
helloWorld.py：
#coding=utf8
import hw
def hello():
ccss = "I am helloWorld"
return hw.hw_hs(ccss)
if __name__ == "__main__":
print hello()
testcpypy.c：
//#include "testcpypy.h"
#include <Python.h>
#include <stdio.h>
#include <stdlib.h>
int main()
{
//初始化Python
Py_Initialize()
if (!Py_IsInitialized()) {
printf("Py_Initialize")
getchar()
return -1
}
//执行python语句
PyRun_SimpleString("import sys")
PyRun_SimpleString("sys.path.append('./')")
PyObject *pModule = NULL
PyObject *pFunc = NULL
PyObject *reslt =NULL
//载入python模块
if(!(pModule = PyImport_ImportModule("helloWorld"))) {
printf("PyImport_ImportModule")
getchar()
return -1
}
//查找函数
pFunc = PyObject_GetAttrString(pModule, "hello")
if ( !pFunc || !PyCallable_Check(pFunc) )
{
printf("can't find function [hello]")
getchar()
return -1
}
//调用python中的函数
reslt = (PyObject*)PyEval_CallObject(pFunc, NULL)
//printf("function return value : %d\r\n", PyInt_AsLong(reslt))
//将python返回的对象转换为C的字符串
char *resltc=NULL
int res
res = PyArg_Parse(reslt, "s", &resltc)
if (!res) {
printf("PyArg_Parse")
getchar()
return -1
}
printf("resltc is %s", resltc)
getchar()
//释放内存
Py_DECREF(reslt)
Py_DECREF(pFunc)
Py_DECREF(pModule)
//关闭python
Py_Finalize()
return 0
}
编译：
gcc -o testcpypy testcpypy.c -IC:\Python27\include -LC:\Python27\libs -lpython27---C:\Python27为python安装目录
或：
gcc -c testcpypy.c -IC:\Python27\include
gcc -o testcpypy.exe testcpypy.o -LC:\Python27\libs -lpython27
执行结果：
带参数的情况：
#include "callpydll.h"
#include "Python.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
int callhello(char *instr, char *outstr)
{
PyObject *pModule = NULL
PyObject *pFunc = NULL
PyObject *reslt = NULL
PyObject *pParm = NULL
char *resltc = NULL
int resltn
int res
char *helloWorld = "TestIM_ProtocBuf"
char *im_account = "aaaa"
char *auth_code = "aaaa"
char *im_uid = "aaaa"
char *proxy_topic = ""
//初始化Python
Py_Initialize()
if (!Py_IsInitialized()) {
printf("Py_Initialize")
getchar()
return -1
}
//执行python语句
PyRun_SimpleString("import sys")
PyRun_SimpleString("sys.path.append('./')")
//载入python模块
if(!(pModule = PyImport_ImportModule(helloWorld))) {
printf("PyImport_ImportModule")
getchar()
return -2
}
//查找函数
pFunc = PyObject_GetAttrString(pModule, "login_proxy_body_serialize")
if ( !pFunc || !PyCallable_Check(pFunc) )
{
printf("can't find function [hello]")
getchar()
return -3
}
//参数转换C -->python, 参数必须是元组（一个参数也是，否则会失败！！！坑啊）
pParm = Py_BuildValue("(ssss)", im_account, auth_code, im_uid, proxy_topic)
//调用python中的函数
reslt = (PyObject*)PyEval_CallObject(pFunc, pParm)
//将python返回的对象转换为C的字符串
res = PyArg_ParseTuple(reslt, "si", &resltc, &resltn)
if (!res) {
printf("PyArg_Parse")
getchar()
return -4
}
printf("resltn is %d", resltn)
memcpy(outstr, resltc, strlen(resltc)+1)
//释放内存
Py_DECREF(reslt)
Py_DECREF(pFunc)
Py_DECREF(pModule)
Py_DECREF(pParm)
//关闭python
Py_Finalize()
return 0
}
int main() {
int i
char *dais = "iammain"
char res[10240]
memset(res,'\0',sizeof(res))
i = callhello(dais, res)
if(0 != i) {
printf("Notify:error")
getchar()
return -1
}
printf("result is %s", res)
getchar()
return 0
}
需要。安装origin需要嵌入python，Origin平台由美国艺电游戏公司（ElectronicArtsInc，简称EA）于2011年正式发布，EA重金打造的全方位游戏社交平台。
