insanely awesome concurrent programming in Python.

practical uses of generators for "systems programming".
generators as components in a data processing pipeline.
captures a lot of common systems problems, especially consumer-producer patterns.
multiplexing generators.
concurrent - threads. generator as a queue.
networking.
generators as co-routines: receivers or consumers.

SimpleCV is a Python interface to several powerful open source computer vision libraries in a single convenient package. With it, your software can have access to high level algorithms in feature detection, filtering, and pattern recognition in a unified framework. Forget about bit depths, file formats, color spaces, buffer management, eigenvalues, and matrix vs bitmap storage.

mincemeat.py is a Python implementation of the MapReduce distributed computing framework.

This page documents the time-complexity (aka "Big O" or "Big Oh") of various operations in current CPython.

Dive Into Python 3 covers Python 3 and its differences from Python 2.

IPython provides a rich toolkit to help you make the most out of using Python interactively. Its main components are: Powerful interactive Python shells (terminal- and Qt-based); Support for interactive data visualization and use of GUI toolkits; Flexible, embeddable interpreters to load into your own projects; Tools for high level and interactive parallel computing.

The PyObjC project aims to provide a bridge between the Python and Objective-C programming languages. The bridge is intended to be fully bidirectional, allowing the Python programmer to take full advantage of the power provided by various Objective-C based toolkits and the Objective-C programmer transparent access to Python based functionality.

The most important usage of this is writing Cocoa GUI applications on Mac OS X in pure Python.

lots of learning-Python resources: which version, docs, books, exercises, style guide, libraries, tools.

Flask is a microframework for Python based on Werkzeug, Jinja 2 and good intentions.

a side-by-side reference sheet. really, really useful.

matplotlib is a python 2D plotting library which produces publication quality figures in a variety of hardcopy formats and interactive environments across platforms.

NumPy is the fundamental package needed for scientific computing with Python.

yields, iterables, generators in Python

Requests is an ISC Licensed HTTP library, written in Python, for human beings.

Crash into Python is a set of documents/slides that are meant to be used as a teaching aid for bringing programmers from other languages up to speed with Python.

Dulwich is a pure-Python implementation of the Git file formats and protocols.

'A Byte of Python' is a free book on programming using the Python language.

Dulwich is a pure-Python implementation of the Git file formats and protocols.

py2exe is a Python Distutils extension which converts Python scripts into executable Windows programs, able to run without requiring a Python installation.

Everything you thought you knew about binary data and Unicode has changed.