Python Essential Reference [Repost]

For anyone who programs in Python, David M. Beazley's Python Essential Reference, Second Edition will serve as a capable and exceptionally competent guide to current Python syntax and library modules. Concise, yet authoritative, this book sets a high standard as a one-volume reference to this powerful object-oriented programming language.
Although the author claims that this title is not really a tutorial, the first 100 pages actually provide an excellent guide to the basics of Python as a language. Geared especially to the experienced programmer seeking to see what's different (and potentially better) about Python, sections on the language itself will let you ramp up on the basic and advanced topics. Short sections with code excerpts that show off essential language features will help you learn or enhance your knowledge of Python quickly. Standout sections here include excellent coverage of object-oriented features, like "special methods" that will let you add custom classes to Python that are just as flexible as built-in classes.
The heart of this book is the 250-page reference section. The author concentrates on all current Python modules (eschewing deprecated or obsolete APIs). Starting with basic modules for Python services and operating system functions, and including handling strings and math functions, the author explains and illustrates each module with short sample code, along with a full listing of APIs. Sections on Python's impressive support for virtually all networking protocols (including sockets, HTTP, FTP, and e-mail) are a standout and will arguably justify the cost of this title for many Python developers. Later modules look at undocumented functions, plus there's an in-depth guide to integrating Python and C code. (This material can even help you build custom Python modules.)
With a remarkably clear presentation style, this well-organized reference offers a compact and worthy guide to today's Python that's sure to meet the needs of many working programmers.

Topics covered:
Reference (and expert-level tutorial) for Python 2.1
Quick overview of Python essentials (including basic syntax, reserved words, and operators)
Types and objects (including built-in types, modules, classes, and special methods)
Operators and expressions (operations on numbers, sequences and dictionaries, type conversion, conditionals and loops)
Control flow
Functions and functional programming idioms
Classes and object-oriented programming tips
Modules and packages
Input and output (including files and persistence)
The Python execution environment
Python library reference
Python services (including garbage collection and "pickling")
Mathematical functions
Strings
Data management and object persistence APIs
Operating system services (including Mac OS and Windows-specific functions)
Python threads
Network programming (including HTTP, FTP, NNTP, and other Web protocols, socket programming, retrieving URLs)
Internet data handling and encoding (including mail attachment and MIME support)
Restricted execution and security modules
Undocumented modules
Extending and embedding Python and C
Summary of changes between Python 1.6, 2.0, and 2.1