1.当取多个返回值时,如下：
 def mix(a, b) :
r1 = a + b
r2 = a - b
return (r1, r2) # (7,3)c++代码如下：
 #include "python.h"
int _tmain(int argc, _TCHAR* argv[])
   {
 string filename = "cal"; // cal.py
string methodname_mix = "mix"; // function name
Py_Initialize();
// load the module
PyObject * pyFileName = PyString_FromString(filename.c_str());
PyObject * pyMod = PyImport_Import(pyFileName);
// load the function
PyObject * pyFunc_mix = PyObject_GetAttrString(pyMod, methodname_mix.c_str());
// test the function is callable
if (pyFunc_mix && PyCallable_Check(pyFunc_mix))
  {
PyObject * pyParams = PyTuple_New(2);
PyTuple_SetItem(pyParams, 0, Py_BuildValue("i", 5));
PyTuple_SetItem(pyParams, 1, Py_BuildValue("i", 2));
// ok, call the function
int r1 = 0, r2 = 0;
PyObject * pyValue = PyObject_CallObject(pyFunc_mix, pyParams);
PyArg_ParseTuple(pyValue, "i|i", &r1, &r2);
if (pyValue)
{
printf("%d,%d\n", r1, r2); //output is 7,3
 }
}
Py_Finalize();
return 0;
 }2.如果返回一个值时：
import string
def AddMult(a, b):
c = a + b
print c
return c c++代码如下：
PyObject* pModule =NULL;
PyObject* pFunc = NULL;
PyObject* pArgs = NULL;
PyObject* pRet = NULL;
Py_Initialize();
PyRun_SimpleString("import sys");
PyRun_SimpleString("sys.path.append('./')");
pModule = PyImport_ImportModule("httpsend");
pFunc = PyObject_GetAttrString(pModule, "AddMult");
//pArgs = Py_BuildValue("s, s", "This is ", "a python code");
pArgs = Py_BuildValue("ii", 12,34);
pRet = PyObject_CallObject(pFunc,pArgs);
int pyResult=0,pyResult2 = 0;
char *str;
int argRet = PyArg_Parse(pRet,"i", &pyResult);
if (argRet)
{
printf("yes!\n");
}
else
{
//错误
printf("error!\n");
}
if(pModule)
Py_DECREF(pModule);
if(pFunc)
Py_DECREF(pFunc);
if(pArgs)
Py_DECREF(pArgs);
if(pRet)
Py_DECREF(pRet);
//PyGILState_Ensure();
Py_Finalize();
|