[python-win32] Fatal Python error:PyThreadState_Get: No currentThread

[Mark Hammond]

> // The following my COM object code to get the python callback.
>
> SetCallBack(BSTR   module_name, BSTR callbk_name){

You need to add:
       PyGILState_STATE state = PyGILState_Ensure();

>      PyObject *mod = PyImport_AddModule(module_name);  // The Fatal
> error is generated while doing this
>
>
>                       // Actually this calls PyImport_GetModuleDict();
>
>
>                       // This is the function which is failing.
>      if(!mod) return S_OK;
>
>   m_pPyCallbk=PyObject_GetAttrString(mod,callbk_name);

and at *every* single exit point (including the one above - 'goto error;' is
what I tend to use)
    PyGILState_Release(state);

>   return S_OK;
>
> }



> Can some one please suggest how to solve this.
> or is there a better way to pass python function to COM objects.

I'm not sure why you are using COM to pass Python stuff around - if you are
already assuming Python, then just use the Python API directly without the
COM overhead - ie, in your example, "SetCallBack" could just be a method on
an object in a regular Python extension.  You may have a good reason - in
which case, it seems fine!

Mark