youtube-dl is a small command-line program to download videos from YouTube.com and a few more sites. It requires the Python interpreter, version 2.x (x being at least 5), and it is not platform specific. It should work in your Unix box, in Windows or in Mac OS X. It is released to the public domain, which means you can modify it, redistribute it or use it however you like.

scikits.learn is a Python module integrating classic machine learning algorithms in the tightly-knit world of scientific Python packages (numpy, scipy, matplotlib). It aims to provide simple and efficient solutions to learning problems that are accessible to everybody and reusable in various contexts: machine-learning as a versatile tool for science and engineering.

Given our development processes we found the average productivity of a single Django developer to be equivalent to the output generated by two C# ASP.NET developers. Given equal-sized teams, Django allowed our developers to be twice as productive as our ASP.NET team.

I suspect these results may actually reflect a lower bound of the productivity differences. It should be noted that about half of the Team Python developers, while fluent in Python, had not used Django before. They quickly learned Django, but it is possible this fluency disparity may have caused an unintended bias in results–handicapping overall Django velocity.

Django applications can be tuned to consume more or less memory. Consider the following strategies to reduce your Django application’s memory consumption, but note that some configuration changes—such as allocating fewer processes or maximum requests—may have a negative impact on overall performance. You may want to experiment with different combinations of configuration values to suit your memory and performance needs.

Pattern is a web mining module for the Python programming language.

It bundles tools for data retrieval (Google + Twitter + Wikipedia API, web spider, HTML DOM parser), text analysis (rule-based shallow parser, WordNet interface, syntactical + semantical n-gram search algorithm, tf-idf + cosine similarity + LSA metrics) and data visualization (graph networks).

The module is bundled with 30+ example scripts.

Disqus, one of the largest Django applications in the world, will explain how they deal with scaling complexities in a small startup.

There are many benefits to keeping a lightweight stack. At Disqus, keeping the stack thin helps us scale Django to reach over 125 million unique visitors a month with just a small team of engineers. Avoiding complicated software packages until needed reduces unnecessary overhead, and has let us stay nimble, and use new capabilities in Django (i.e., database routing) and other software as they arise. The talk will cover key parts of the architecture and development process at Disqus, including databases (relational and non), queues, automated testing, and continuous deployment.

Django Pre-flight is meant to help with creation of simple pages on which one can quickly gauge health of the system and its external dependencies. It's a great help for testers before actually delving into the system to be sure that all is configured correctly and any found problems are due to bugs in the code itself and not because of misconfiguration.

This article shows you how to write a relatively simple script to extract text paragraphs from large chunks of HTML code, without knowing its structure or the tags used. It works on news articles and blogs pages with worthwhile text content, among others…

Pyramid is a small, fast, down-to-earth Python web application development framework. It is developed as part of the Pylons Project. It is licensed under a BSD-like license.

polib is a library to manipulate, create, modify gettext files (pot, po and mo files). You can load existing files, iterate through it's entries, add, modify entries, comments or metadata, etc... or create new po files from scratch.

polib is pretty stable now and is used by many opensource projects.

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