3. Python Runtime Services

















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3. 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.
gc
Interface to the cycle-detecting garbage collector.
atexit
Register and execute cleanup functions.
types
Names for all built-in types.
UserDict
Class wrapper for dictionary objects.
UserList
Class wrapper for list objects.
UserString
Class wrapper for string objects.
operator
All Python's standard operators as built-in functions.
traceback
Print or retrieve a stack traceback.
linecache
This module provides random access to individual lines
from text files.
pickle
Convert Python objects to streams of bytes and back.
cPickle
Faster version of pickle, but not subclassable.
copy_reg
Register pickle support functions.
shelve
Python object persistence.
copy
Shallow and deep copy operations.
marshal
Convert Python objects to streams of bytes and back
(with different constraints).
imp
Access the implementation of the import statement.
code
Base classes for interactive Python interpreters.
codeop
Compile (possibly incomplete) Python code.
pprint
Data pretty printer.
repr
Alternate repr() implementation with size limits.
new
Interface to the creation of runtime implementation objects.
site
A standard way to reference site-specific modules.
user
A standard way to reference user-specific modules.
__builtin__
The set of built-in functions.
__main__
The environment where the top-level script is run.








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