I've had a lot of replies suggesting different things. These are the results:
When I change while Townshps !="": to while Townshp is not None: and when I change while Townshps !="": to for Townshp in iter(gp.ListFeatureClasses().next, None): They both work perfectly, and it solved my problem. Thank you all so much. Marisa On Dec 20, 2:22 pm, Fredrik Lundh <[EMAIL PROTECTED]> wrote: > [EMAIL PROTECTED] wrote: > > I'm extremely new to Python and programming as a whole. I have written > > a python script with the assistance of ESRI ArcGIS 9.2, which uses > > Python 2.4.1, however, it gives me this error when I try to run it. > > I've already posted at ESRI support, and I was hoping that Python > > people could help me more. > > > I hope there is something simple I could do to be able to define the > > object that it thinks is NoneType.that would be the None object. > > http://effbot.org/pyref/None > > which is often used as a placeholder in Python. > > my guess is that it's the next() call that returns None when you've > reached the end of the shapefile list; try changing > > while Townshps !="": > > to > > while Townshps is not None: > > and see if the problem goes away. > > if you still get an exception, please post the full traceback; see > > http://effbot.org/pyfaq/tutor-i-need-help-im-getting-an-error-in-my-p... > > for details. > > </F> -- http://mail.python.org/mailman/listinfo/python-list
