importing win32com.client.Dispatch with embedded interpreter

Mike Haspert mike_haspert at credence.com
Tue Jul 31 22:04:15 CEST 2001


Hi all:
The minimal function f1(), below in usecom.py, runs fine from the
command line, but when I use the C API for the interpreter, it runs
the first time and fails thereafter. Can anyone see what I'm doing
wrong? The error message "TypeError: this constructor takes no
arguments" has me stumped.
Thanks in advance for your help.

******************
#include "python.h" 
#include <iostream>
int minimal(char* modname)
{
    bool success = false;
    PyObject *mod,*func,*args,*rvals;
    Py_Initialize();
    mod = PyImport_ImportModule(modname);
    if(mod)
    {
        func = PyObject_GetAttrString(mod, "f1");
	Py_DECREF(mod);
	if(func)
	{
  	    if(NULL!= (args = Py_BuildValue("()")))	
            {
		if(NULL!= (rvals = PyEval_CallObject(func,args)))
		{
		    //use_the_rvals()
		    success = true;
		    Py_DECREF(rvals);		
		}
		Py_DECREF(args);		
	    }
            Py_DECREF(func);		
	}
    }
    Py_Finalize();
    return success;
}
int main(int argc, char* argv[])
{
	cout<<"********first usecom\n"<<endl;
	minimal("usecom");
	cout<<"********second usecom\n"<<endl;
	minimal("usecom");
	cout<<"********end\n"<<endl;
	return 0;
}

******usecom.py***********
def f1():
    import traceback,string,sys
    try:
        from win32com.client import Dispatch
        print "successful import of Dispatch"
    except:
        msg = string.join(traceback.format_exception(sys.exc_info()[0],
sys.exc_info()[1],sys.exc_info()[2]), "")
        print str(msg)

if __name__ == "__main__":
    print f1()
    print f1()

**************the output***************
********first usecom

successful import of Dispatch
********second usecom

Traceback (most recent call last):
  File "c:\scripts\usecom.py", line 4, in f1
    from win32com.client import Dispatch
  File "C:\Python21\win32com\__init__.py", line 95, in ?
    SetupEnvironment()
TypeError: this constructor takes no arguments

********end



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