[toward-py3k] rewrite to "except AnException as exc:" (part of #2711624)
The older form is not necessary since we dropped python 2.5 compability. This
will help Python 3.3 experimentation.
Schema of the data
------------------
First take a look at the data schema_ then try to remember that you are browsing
through a heap of data by applying stylesheets to the results of queries. This
site is not a content management system with items placed in folders. It is an
interface to a database which applies a view to retreived data.
.. _schema: schema