26. Python Runtime Services

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.

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