Python-digest # 20. News, interesting projects, articles and interviews [March 23, 2014 - March 30, 2014]

The next news release about python and nearby technologies, even if with a daily late arrival, has arrived. Today is about REST, performance testing, machine learning, entrance __del__, and much more interesting

Traditionally, I thank owlman75 for the illustration, those who send news to create digests, and also periodically send me error reports via Orfus


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news

• Project on kickstarter to translate the book 'Writing Idiomatic Python' into a series of screencasts
  The author of the book 'Writing Idiomatic Python' wants to make some videos where, step by step, bad code will become good. Project goal: $ 5,000. If you manage to earn $ 10,000, then all videos will be distributed under Creative Commons

Articles and Interviews

• Task queues
  The problems of design of modern mechanisms for building queues of tasks (Celery) are considered. You should also carefully read the comments - they are also extremely useful.
• Tools for statistical analysis of natural language
  A bit of theory and practice in the statistical analysis of texts
• Display data on geographic maps
  An example of using mpl_toolkits in IPython notebook
• How to import without problems
  The author voices the solution to the problem of importing common code into different projects without placing them in system-wide libraries. The solution is not ideal and, if possible, you should still deal with the import system, for example, on an article on Habré
• We count to infinity and other tricks with __del__
  The author explores the interesting features of the behavior of the garbage collector and the magic function __del__
• Fixtures for sessions in pytest
  A practical guide on how to prepare the data available during the entire test session, and not in a separate test
• Real-time notifications on Django using node.js, socket.io and Redis
  Interesting article that shows how to stack diverse applications onto a stack to achieve better client-side performance and responsiveness.
• Competitive programming
  Another example of using the Threading module with an illustration.
• We test the performance of your REST API in 15 minutes
  
• Machine learning on an industrial scale with Feature Forge
  Introduction to the FeatureForge Library (binding over scikit-learn)
• Package installation
  A quick guide to setuptools, easy_install and pip
• Download directly to S3 cloud
  Rather verbose, with all the subtleties, an article on how to set up and implement an Amazon S3 cloud storage file upload form.
• Python Surprises
  Some things in modules and python that seemed unusual or unexpected to the author.
• Search for similar items using machine learning
  A series of articles on the subject with the theory and practical examples. The first part was introductory, but also quite noteworthy.
• Performance Analysis Guide
  The article, though not new but very suitable
• Excel-style interactive data grid for IPython notebook
  
• Basics of Unit Testing
  A big and rich article about using unittest module
• Django, Flask and Redis - let's organize common user sessions for frameworks
  A detailed article describing the mechanisms for storing sessions in both frameworks and the decision to exchange data between them.
• Algorithm AI for game 2048
  
• Django REST framework overview
  Considered the main features and expressed due criticism
• Creating XML with lxml.objectify
  

Video

• Python Meetup: February meeting
  Four great reports from the February meeting of python developers

Books and documentation

• Over 80 of the best tutorials, books, and PDF for learning online programming
  A selection of English-language (free) books, blogs, websites, textbooks on Python

Interesting projects, tools, libraries

• pprintpp
  Even more beautiful pprint
• Punchcard - github style charts
  Build github style diagrams using pycairo module