Evaluate a python expression from C?
David Brady
daves_spam_dodging_account at yahoo.com
Tue Nov 27 15:33:01 EST 2001
Hi all,
I would like to embed Python in my application, and
one of the methods of access I'd like to have is the
ability to send an expression to Python as a string,
and get back a string containing the result.
For example, to be able to say "(2+5)*3" and get "21"
as the result.
I have tried using PyRun_String() but I get an access
violation. My code looks like this:
void PyEval(char *data)
{
// data is a shared char[900] buffer;
// size checking is left out for clarity here
Py_Initialize();
// The following line access violates.
PyObject *pObj = PyRun_String(data,0,NULL,NULL);
char *buf;
PyArg_ParseTuple( pObj, "s", &buf);
strcpy( data, buf);
}
Could the problem be the NULL args I pass in? For
simple evaluation, what should I populate them with
instead?
Thanks for any ideas or help.
-dB
=====
David Brady
daves_spam_dodging_account at yahoo.com
I'm feeling very surreal today... or *AM* I?
__________________________________________________
Do You Yahoo!?
Yahoo! GeoCities - quick and easy web site hosting, just $8.95/month.
http://geocities.yahoo.com/ps/info1
More information about the Python-list
mailing list