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Python/C API问题

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悬赏园豆:15 [待解决问题]

我通过python/c API,让Python调用C语言,出现了如下错误:

ImportError: DLL load failed: %1 不是有效的 Win32 应用程序。

 

操作步骤:

1.编写C文件 addList.c:

//Python.h has all the required function definitions to manipulate the Python objects
#include <Python.h>

//This is the function that is called from your python code
static PyObject* addList_add(PyObject* self, PyObject* args){

    PyObject * listObj;

    //The input arguments come as a tuple, we parse the args to get the various variables
    //In this case it's only one list variable, which will now be referenced by listObj
    if (! PyArg_ParseTuple( args, "O", &listObj ))
        return NULL;

    //length of the list
    long length = PyList_Size(listObj);

    //iterate over all the elements
    int i, sum =0;
    for (i = 0; i < length; i++) {
        //get an element out of the list - the element is also a python objects
        PyObject* temp = PyList_GetItem(listObj, i);
        //we know that object represents an integer - so convert it into C long
        long elem = PyInt_AsLong(temp);
        sum += elem;
    }

    //value returned back to python code - another python object
    //build value here converts the C long to a python integer
    return Py_BuildValue("i", sum);

}

//This is the docstring that corresponds to our 'add' function.
static char addList_docs[] =
"add(  ): add all elements of the list\n";

/* This table contains the relavent info mapping -
   <function-name in python module>, <actual-function>,
   <type-of-args the function expects>, <docstring associated with the function>
 */
static PyMethodDef addList_funcs[] = {
    {"add", (PyCFunction)addList_add, METH_VARARGS, addList_docs},
    {NULL, NULL, 0, NULL}

};

/*
   addList is the module name, and this is the initialization block of the module.
   <desired module name>, <the-info-table>, <module's-docstring>
 */
PyMODINIT_FUNC initaddList(void){
    Py_InitModule3("addList", addList_funcs,
            "Add all ze lists");

}

2.编写run.py

   

#Though it looks like an ordinary python import, the addList module is implemented in C
import addList

l = [1,2,3,4,5]
print("Sum of List - " + str(l) + " = " +  str(addList.add(l)))

 

3.编写setup.py

#build the modules

from distutils.core import setup, Extension

setup(name='addList', version='1.0',  \
      ext_modules=[Extension('addList', ['addList.c'])])

 

 

4.cmd运行python setup.py build和python setup.py install,生成了如下文件:

 

 

 

最后运行run.py,出现如下错误:

 

 

    不知道哪里错了,之前用CTypes也出现了这样的错误

    初接触python,对python的环境很懵逼

 

rm_rf的主页 rm_rf | 初学一级 | 园豆:6
提问于:2018-02-06 13:23
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