This module provides basic functions for parsing mime-type names and matching them against a list of media-ranges.

See section 14.1 of RFC 2616 (the HTTP specification) for a complete explanation.

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

Reformats and renames etexts downloaded from Project Gutenberg.

The IPython Notebook consists of two related components:

An JSON based Notebook document format for recording and distributing Python code and rich text.
A web-based user interface for authoring and running notebook documents.

petl is a tentative Python module for extracting, transforming and loading tables of data.

Free open source full-stack framework for rapid development of fast, scalable, secure and portable database-driven web-based applications. Written and programmable in Python.

A Python binding to the popular "SVM-Light" support vector machine library.

Sentence tokenizer written in python. Includes proper tokenization and models for very high accuracy sentence boundary detection (English only for now). The models are trained from Wall Street Journal news combined with the Brown Corpus which is intended to be widely representative of written English. Error rates on test news data are near 0.25%.

This opinionated guide exists to provide both novice and expert Python developers a best-practice handbook to the installation, configuration, and usage of Python on a daily basis.

This is a straight port from the CLD (Compact Language Detector) library embedded in Google's Chromium browser. The library detects the language from provided UTF8 text (plain text or HTML). It's implemented in C++, with very basic Python bindings.

Cross-platform alternative to unix patch utility capable to apply unified diffs.

Requests is an elegant and simple HTTP library for Python, built for human beings.

gevent is a coroutine-based Python networking library that uses greenlet to provide a high-level synchronous API on top of the libevent event loop.

Hyde is a static website generator powered by Python & Django. Hyde supports all the Django template tags & filters and even has a few of its own. The built-in web server + auto-generator provide instant refresh and unlimited flexibility.

JSON-LD processor written in Python.

Pyramid is a very general open source Python web framework. As a framework, its primary job is to make it easier for a developer to create an arbitrary web application. The type of application being created isn’t really important; it could be a spreadsheet, a corporate intranet, or an “oh-so-Web-2.0” social networking platform. Pyramid is general enough that it can be used in a wide variety of circumstances.

Facepy is a client for Facebook's Graph API that doesn't suck.

pandas is a python package providing convenient data structures for time series, cross-sectional, or any other form of “labeled” data, with tools for building statistical and econometric models.

Bulbs is an open-source Python persistence framework for graph databases and the first piece of a larger Web-development toolkit that will be released in the upcoming weeks.

It’s like an ORM for graphs, but instead of SQL, you use the graph-traveral language Gremlin to query the database.

You can use it to connect to any Blueprints-enabled database, including TinkeGraph, Neo4j, OrientDB, Dex, and OpenRDF (and there is an InfiniteGraph implementation in development).

You can use Bulbs from within any Python Web-development framework, including Flask, Pyramid, and Django.

This is a first pass at implementing a Python wrapper for the Zotero API.

Akara is a platform for developing data services available on the Web, using REST architecture. Akara is open source software written in Python and C.

A survey of existing (Python) libraries, frameworks, and tools for managing semi-automated workflows and pipelines of tasks. There are a number of loose, overlapping terms for these kinds of systems: BPM (business process management), workflow, pipeline, flowchart, state machine, visual programming, dataflow, flow-based programming, dependency management, task management, etc.

SequenceMatcher is a flexible class for comparing pairs of sequences of any type, so long as the sequence elements are hashable.

Python extension computing string distances and similarities.

The Virtuoso Redland RDF Provider is an implementation of the Storage API, Model and Query interfaces of the Redland framework for RDF. This provider enables the execution of queries via the Redland Rasqal query engine or via Virtuoso query engine directly against the Virtuoso OpenSource Quad Store.

PDFMiner is a tool for extracting information from PDF documents. Unlike other PDF-related tools, it focuses entirely on getting and analyzing text data. PDFMiner allows one to obtain the exact location of text in a page, as well as other information such as fonts or lines. It includes a PDF converter that can transform PDF files into other text formats (such as HTML). It has an extensible PDF parser that can be used for other purposes than text analysis.

imaplib implements a client for communicating with Internet Message Access Protocol (IMAP) version 4 servers. The IMAP protocol defines a set of commands sent to the server and the responses delivered back to the client. Most of the commands are available as methods of the IMAP4 object used to communicate with the server.

XHTML2PDF is a converter for HTML/XHTML and CSS to PDF and a Python package.

Django’s url dispatcher doesn’t handle subdomains.  If you want/need to use subdomains you’ve got to use session middleware.

Accentuate.us uses statistics to predict where special characters are needed on a language-by-language basis.

Pycco is a Python port of Docco: the original quick-and-dirty, hundred-line-long, literate-programming-style documentation generator. It produces HTML that displays your comments alongside your code. Comments are passed through Markdown, and code is passed through Pygments syntax highlighting.

With one command, have a working virtualenv + virtualenvwrapper environment.

Gunicorn 'Green Unicorn' is a Python WSGI HTTP Server for UNIX. It's a pre-fork worker model ported from Ruby's Unicorn project. The Gunicorn server is broadly compatible with various web frameworks, simply implemented, light on server resources, and fairly speedy.

Dumbo is a project that allows you to easily write and run Hadoop programs in Python. More generally, Dumbo can be considered to be a convenient Python API for writing MapReduce programs.

A python interface to the Stanford Parser. It uses JPype to create a Java virtual machine, instantiate the parser, and call methods on it. Most of the code is focused on getting the Stanford Dependencies, but it's easy to add API to call any method on the parser.

Modular toolkit for Data Processing (MDP) is a Python data processing framework.

From the user's perspective, MDP is a collection of supervised and unsupervised learning algorithms and other data processing units that can be combined into data processing sequences and more complex feed-forward network architectures.

HotQueue is a Python library that allows you to use Redis as a message queue within your Python programs.

MongoEngine is an Object-Document Mapper, written in Python for working with MongoDB.

There is a certain value in processing JSON as a stream in SAX-like manner when the size of the payload starts to be counted in megabytes and if you don't need to actually store the whole object in memory.

django-treebeard is a library that implements efficient tree implementations for the Django Web Framework 1.0+. It includes 3 different tree implementations: Adjacency List, Materialized Path and Nested Sets.

The Text Processing API supports the following functionality:

Stemming & Lemmatization
Sentiment Analysis
Tagging and Chunk Extraction

It provides constructs that will seem familiar to those used to ORMs like SQLAlchemy or Django but which are backed by an RDF store containing multiple graphs and are ultimately expressed in OWL.

This user guide describes a Python package, PyMC, that allows users to efficiently code a probabilistic model and draw samples from its posterior distribution using Markov chain Monte Carlo techniques.

Hookbox is a Comet server and message queue that tightly integrates with your existing web application via web hooks and a REST interface.

Pyjamas is a Rich Internet Application (RIA) Development Platform for both Web and Desktop.

It contains a Python-to-Javascript compiler, an AJAX framework and a Widget Set API. Pyjamas started life as a Python port of Google Web Toolkit, the Java-to-Javascript compiler.

SANE stands for "Scanner Access Now Easy" and is an application programming interface (API) that provides standardized access to any raster image scanner hardware (flatbed scanner, hand-held scanner, video- and still-cameras, frame-grabbers, etc.). The SANE API is public domain and its discussion and development is open to everybody. The current source code is written for UNIX (including GNU/Linux) and is available under the GNU General Public License (the SANE API is available to proprietary applications and backends as well, however). More details about the license can be found on our license page. Ports to MacOS X, OS/2 and Microsoft Windows are either already done or in progress.

If you are running local tests against your application using WebTest, with just a little tweaking you can turn those tests into HTTP tests (i.e., actually connect to a socket).

The Diff Match and Patch libraries offer robust algorithms to perform the operations required for synchronizing plain text.

formencode.htmlfill is a library to fill out forms, both with default values and error messages. It’s like a template library, but more limited, and it can be used with the output from other templates.

“import cloud; cloud.call(my_function, arguments)” serialises my_function and its arguments, pushes it up to one of their EC2 servers and hands you back a job ID which you can poll (or block on) for a response.

What Unidecode provides is a function, 'unidecode(...)' that takes Unicode data and tries to represent it in ASCII characters (i.e., the universally displayable characters between 0x00 and 0x7F). The representation is almost always an attempt at transliteration -- i.e., conveying, in Roman letters, the pronunciation expressed by the text in some other writing system.

The python-colormath is a python module that abstracts common color math operations. For example, converting from CIE L*a*b to XYZ, or from RGB to CMYK.

libcloud is a pure python client library for interacting with many of the popular cloud server providers. It was created to make it easy for developers to build products that work between any of the services that it supports.

This is a script that:
1. Can create and destroy virtual servers, using a Cloud service API (something supported by libcloud).
2. Sets up an Ubuntu server to a known configuration.
3. Deploys Python web applications to these servers.

A fully-functional Python unittest example where we have a Tornado web application that is being tested.

Freshen is an acceptance testing framework for Python.

Beaker is a library for caching and sessions for use with web applications and stand-alone Python scripts and applications. It comes with WSGI middleware for easy drop-in use with WSGI based web applications, and caching decorators for ease of use with any Python based application.

Seth explains how to get all the necessary spatial hoo-hah working on Mac OS X without using MacPorts. GDAL, Mapnik, NumPy, Boost, Cascadenik and other necessary bits and pieces all included.

The missing manual for Python’s powerful pdb debugger.

How to make a county-specific choropleth map using only free tools.

diesel is a framework for writing network applications using asynchronous I/O in Python.

Tornado is a scalable, non-blocking web server and tools. Because it is non-blocking and uses epoll, it can handle thousands of simultaneous standing connections, which means it is ideal for real-time web services.

This package determines important terms within a given piece of content. It uses linguistic tools such as Parts-Of-Speech (POS) and some simple statistical analysis to determine the terms and their strength.

After you’ve gotten all of this set up the first time it will start saving you time every time you deploy. It also prevents stupid mistakes like FTP’ing your files to the wrong directory on the server. It frees you from those headaches and lets you concentrate on the real work to be done instead of the busywork.

This is a little snippet that'll let you sprinkle DEBUG level logging throughout your code and only have it appear in your log file when it's needed (for example when there's an exception.)

The module standardizes a core set of fast, memory efficient tools that are useful by themselves or in combination. Together, they form an “iterator algebra” making it possible to construct specialized tools succinctly and efficiently in pure Python.

This particular fabric file makes setting up and deploying a django application much easier, but it does make a few assumptions. Namely that you’re using Git, Apache and mod_wsgi and your using Debian or Ubuntu.

Fabric is a Python library and command-line tool designed to streamline deploying applications or performing system administration tasks via the SSH protocol. It provides tools for running arbitrary shell commands (either as a normal login user, or via sudo), uploading and downloading files, and so forth.

Python library for building XML trees.

For the modern Python programmer, some of the most important tools to aid in reduced complexity and repetition are virtualenv, Fabric, and pip.

Geniusql is a public domain, low-level Object-Relational Mapper for Python applications. It primarily uses a generic Table Data Gateway architecture (as opposed to the more tightly-coupled Active Record architecture recently popularized by Ruby On Rails and Django).

Supervisor is a client/server system that allows its users to monitor and control a number of processes on UNIX-like operating systems.

Ultra simple API for geocoding a single string against various web services.

Execute arbitrary JavaScript code from Python. Allows you to reference arbitrary Python objects and functions in the JavaScript VM.

ZenQueue is an incredibly simple message queueing system.

nose extends unittest to make testing easier.

sqlparse is a non-validating SQL parser for Python. It provides support for parsing, splitting and formatting SQL statements.

Haystack provides modular search for Django. It features a unified, familiar API that allows you to plug in different search backends (such as Solr, Whoosh, etc.) without having to modify your code.

It’s an exceedingly civilized way to develop an app.

When animation hinders visualization.