The modules described in this chapter provide a wide range of services related to the Python interpreter and its interaction with its environment. Here's an overview:
sys
Access system-specific parameters and functions. __builtin__
The module that provides the built-in namespace.
__main__
The environment where the top-level script is run. warnings
Issue warning messages and control their disposition.
contextlib
Utilities for with-statement contexts. atexit
Register and execute cleanup functions.
traceback
Print or retrieve a stack traceback. __future__
Future statement definitions
gc
Interface to the cycle-detecting garbage collector. inspect
Extract information and source code from live objects.
site
A standard way to reference site-specific modules. user
A standard way to reference user-specific modules.
fpectl
Provide control for floating point exception handling.