Which exception has been used? (was: Which exception to use?)

[Erik Max Francis]

Chad Netzer wrote:

> Well, I think Cameron's point is that one can have exceptions that are
> NOT derived from Exception (although it is very bad style; but you may
> not have to be prepared to handle other people's code).  Also, string
> exceptions are still (and at least pychecker wil report that as a
> warning)

I tend to handle it with an except Exception, e: ... followed by an
except: ... where I handle either just sys.exc_type (if that's all I'm
interested in) or the full sys.exc_info().

I think in summary to the questions raised, StandardError is the class
which all internally used Python exception classes are derived. 
Exception is the class from which _all_ (including user-defined)
exception classes should be derived; StandardError, of course, derives
from Exception as well.

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