vs c++调用python函数
1.环境配置
2.引用代码
#include
#include "Python.h"
int sppfeature(string str)
{
Py_SetPythonHome("C:\\Python27\\");
Py_Initialize();//初始化
if (!Py_IsInitialized())
{
printf("初始化失败！");
return -1;
}
int val = 0;
PyObject * pModule = NULL;
PyObject * pFunc = NULL;
PyObject * pName = PyString_FromString("exfeature");//载入exfeature.py文件
pModule = PyImport_Import(pName);
//pModule = PyImport_ImportModule("exfeature");//Test001:Python文件名
if (!pModule)
{
printf("can't find exfeature.py");
getchar();
return -1;
}
PyObject *pDict = PyModule_GetDict(pModule);
if (!pDict)
{
return -1;
}
pFunc = PyDict_GetItemString(pDict, "exfeatofimg");//提取exfeatofimg函数
//pFunc = PyObject_GetAttrString(pModule, "exfeatofimg");//Add:Python文件中的函数名
//创建参数:
PyObject *pArgs = PyTuple_New(1);//函数调用的参数传递均是以元组的形式打包的,1表示参数个数
char *ustr = G2U(str.c_str()); //由于vs采用GB2312编码，python采用UTF-8，传递的字符串python无法正常解码，需要提前进行转换
PyTuple_SetItem(pArgs, 0, Py_BuildValue("s", ustr));//0--序号,s表示创建字符串型变量
PyObject *pReturn = NULL;
pReturn = PyEval_CallObject(pFunc, pArgs);//调用函数
int size = PyList_Size(pReturn);//pReturn 为列表
//cout << "返回列表的大小为: " << size << endl;
for (int i = 0; i < size; ++i)
{
PyObject *pNewAge = PyList_GetItem(pReturn, i);//相当于 python中的pReturn[i]
float newAge;
PyArg_Parse(pNewAge, "f", &newAge);//将python的值转为c的值
int v = (newAge > 0) ? 1 : 0;
val |= (v< 说明：
exfeature.py文件需要放置在C:\Python27\Lib路径下参考：
https://www.cnblogs.com/babietongtianta/p/3143900.html