[EuroPython] Please help in calling python fucntion from 'c'

[M.-A. Lemburg]

Please post this to comp.lang.python. This is not the right list to
discuss technical aspect around Python.

Thanks.

Praveen Patil wrote:
> Hi,
> 
> I have written 'C' dll(MY_DLL.DLL) . I am importing 'C' dll in python
> file(example.py).
> I want to call python function from 'c' function.
> For your reference I have attached 'c' and python files to this mail.
> In my pc:
> python code is under the directory D:\test\example.py
> dll is under the directory C:\Program Files\Python\DLLs\MY_DLL.pyd
> 
> Here are the steps I am following.
> 
> step(1): I am calling 'C' function(RECEIVE_FROM_IL_S) from python.
>          This 'C' function is existing imported dll(MY_DLL).
> step(2): I want to call python function(TestFunction) from 'C'
> function(RECEIVE_FROM_IL_S).
> 
> 
> Python code is(example.py)  :-
> ----------------------------
> import MY_DLL
> 
> G_Logfile          = None
> 
> def TestFunction():
>     G_Logfile = open('Pytestfile.txt', 'w')
>     G_Logfile.write("%s \n"%'I am writing python created text file')
>     G_Logfile.close
>     G_Logfile = None
> #end def TestFunction
> 
> if __name__ == "__main__":
> 
>    MY_DLL.RECEIVE_FROM_IL_S(10,50)
> 
> 
> 'C' code is (MY_DLL.c) :-
> ---------------------
> #include <windows.h>
> #include <stdio.h>
> #include <Python.h>
> 
> PyObject* _wrap_RECEIVE_FROM_IL_S(PyObject *self, PyObject *args)
> {
>     FILE* fp;
>     PyObject* _resultobj;
>     int i,j;
> 
>     if( !(PyArg_ParseTuple(args, "ii",&i,&j)))
>     {
>        return NULL;
>     }
>     fp= fopen("RECEIVE_IL_S.txt", "w");
>     fprintf(fp, "i=%d   j=%d" , i,j);
>     fclose(fp);
> 
>     /* Here I want to call python function(TestFunction). Please suggest me
> some solution*/
> 
>     _resultobj = Py_None;
>     return _resultobj;
> }
> 
> 
> static PyMethodDef MY_DLL_methods[] = {
>       { "RECEIVE_FROM_IL_S", _wrap_RECEIVE_FROM_IL_S, METH_VARARGS },
>       { NULL , NULL}
>       };
> 
> __declspec(dllexport) void __cdecl initMY_DLL(void)
>   {
>     Py_InitModule("MY_DLL",MY_DLL_methods);
>   }
> 
> 
> Please anybody help me solving the problem.
> 
> 
> Cheers,
> 
> Praveen.
> 
> 
> ------------------------------------------------------------------------
> 
> import MY_DLL
> 
> G_Logfile          = None
> 
> def TestFunction():
>     G_Logfile = open('Pytestfile.txt', 'w')
>     G_Logfile.write("%s \n"%'I am writing python created text file')
>     G_Logfile.close
>     G_Logfile = None
> #end def TestFunction  
> 
> if __name__ == "__main__":
> 
>    MY_DLL.RECEIVE_FROM_IL_S(10,50)
> 
> 
> ------------------------------------------------------------------------
> 
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-- 
Marc-Andre Lemburg
CEO eGenix.com Software GmbH
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