Core Python Programming

10.13. Related Modules

The classes found in module Lib/exceptions.py are automatically loaded as built-in names on start-up, so no explicit import of this module is ever necessary. We recommend you take a look at this source code to familiarize yourself with Python's exceptions and how they interrelate and interoperate. Starting with 2.0, exceptions are now built into the interpreter (see Python/exceptions.c).