Carl J. Van Arsdall wrote: > So this is probably a fairly basic question, but help me out because I'm > just not lining things up and I'm somewhat new to the world of exception > handling. > > What's the benefit to inheriting an exception from and of the available > parent exception classes? Does one subclass have benefits over any > other? Most of what I see involves making a new class and inheriting > from Exception so that one can have an exception class with a name of > their choosing. If you didn't care about the name would there be any > benefit to making a subclass versus raising StandardError or something > else equally vanilla? Are there any difference to library provided > exceptions other than their names? > > -carl > If you create a new exception class that is a subclass of, say, "ValueError," Your exception may have some specific data that assists you in discovering the source of the problem. Meanwhile, any code that says: try: something() except ValueError, error: ... will catch your new exception in the ValueError clause. Subclasses of exceptions can be seen as more specific version of the parent.
--Scott David Daniels [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list