c语言调用Python脚本-2 - Cpper - C++博客

c语言调用Python脚本-2

python代码二段:



call.py

deftest():

print'hello world'





defadd(a,b):

returna+b

api.py

importio



defload_test():

fp=open('call.py','r')

buffer=''

iffp:

buffer=fp.read()

fp.close()

returnbuffer



cpp代码:

#include<stdio.h>

#include<stdlib.h>

#include<Python.h>



intmain(intargc,charargv[])

{

Py_Initialize();

if(!Py_IsInitialized())

{

return-1;

}



PyRun_SimpleString("import sys");

PyRun_SimpleString("sys.path.append('./')");

PyObjectpName;

PyObjectpModule;

PyObjectpDict;

PyObjectpFunc;



pName=PyString_FromString("api");

pModule=PyImport_Import(pName);

if(!pModule)

{

printf("can't find call.py");

getchar();

return-1;

}



pDict=PyModule_GetDict(pModule);

if(!pDict)

{

return-1;

}



{

pFunc=PyDict_GetItemString(pDict,"load_test");

if(!pFunc||!PyCallable_Check(pFunc))

{

printf("can't find function [test]");

getchar();

return-1;

}



PyObjectpFn=PyObject_CallObject(pFunc,0);

charbuffer=PyString_AsString(pFn);

printf("%s\n",buffer);



PyObjecto=Py_CompileString(buffer,"none",Py_file_input);

PyObjectm=PyImport_ExecCodeModule("a.a",o);

PyObjectd=PyModule_GetDict(m);

pFunc=PyDict_GetItemString(d,"add");

if(!pFunc||!PyCallable_Check(pFunc))

{

printf("can't find function [add]");

getchar();

return-1;

}



PyObjectargs=PyTuple_New(2);

PyTuple_SetItem(args,0,Py_BuildValue("l",3));

PyTuple_SetItem(args,1,Py_BuildValue("l",4));

PyObjectpAdded=PyObject_CallObject(pFunc,args);

intret=PyInt_AsLong(pAdded);

printf("add value:%d\n",ret);

}



Py_Finalize();

system("PAUSE");

return0;

}



这段代码和上一篇有点区别

主要区别是从从内存载入python模块然后调用函数

主要部分是这块:

PyObject o = Py_CompileString(buffer,"none",Py_file_input);

PyObject m = PyImport_ExecCodeModule("a.a",o);

PyObject* d = PyModule_GetDict(m);buffer是python源码字符串



在python2.7中执行正常原文链接: https://www.cnblogs.com/lexus/archive/2013/01/24/2875680.html

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