如何解决“分段故障”C＆放大器时混合编程;蟒蛇？ [英] How to solve the 'Segmentation fault' when hybrid programming of C & Python?

问题描述

在我的Ubuntu的：

Under my Ubuntu:

$猫test.py

$ cat test.py

#Filename test.py 
def Hello(): 
    print "Hello, world!" 

$猫tom.cpp

$ cat tom.cpp

#include <Python.h> 

int main() 
{ 
     Py_Initialize(); 

     PyObject * pModule = NULL; 
     PyObject * pFunc   = NULL; 

     pModule = PyImport_ImportModule("test");
     pFunc   = PyObject_GetAttrString(pModule, "Hello"); 
     PyEval_CallObject(pFunc, NULL); 

     Py_Finalize(); 

     return 0; 
} 

和再编译：

g++ tom.cpp -I/usr/include/python2.7 -L/usr/lib/python2.7 -lpython2.7

运行：
$ ./a.out

Run: $ ./a.out

Segmentation fault

为什么呢？
谁能帮助吗？
谢谢！

Why? Could anyone help? Thanks!

BR，
汤姆

BR, Tom

推荐答案

该问题是由PyObject_GetAttrString返回NULL引起的。我还增加了使用PyRun_SimpleString的目录路径为我的dev目录不蟒蛇下路径

the issue is caused by PyObject_GetAttrString returning NULL. I have also added the directory path using PyRun_SimpleString as my dev dir was not under python path

#include <Python.h>

int main()
{

    Py_Initialize();
    PyRun_SimpleString ("import sys; sys.path.insert(0, 'add the directory path here')");
    PyObject * pModule = NULL;
    PyObject * pFunc   = NULL;

    pModule = PyImport_ImportModule("test");
    pFunc   = PyObject_GetAttrString(pModule, "Hello");
    if(pFunc != NULL) {
        PyEval_CallObject(pFunc, NULL);
        Py_Finalize();
    }
    else {
        printf("pFunc returned NULL\n");
    }

    return 0;
}

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