Issue #377 (July 16, 2019) (31)

Build a Recommendation Engine With Collaborative Filtering In this tutorial, you’ll learn about collaborative filtering, which is one of the most common approaches for building recommender systems. You’ll cover the various types of algorithms that fall under this category and see how to implement them in Python. REAL PYTHON

Has the Python GIL Been Slain? Thoughts on upcoming features in Python 3.8 and 3.9, like sub-interpreters, that will make writing high-performance concurrent programs that are CPU-bound more convenient. ANTHONY SHAW

The Python Celery Cookbook: Small Tool, Big Possibilities “Everyone in the Python community has heard about Celery at least once, and maybe even already worked with it. Basically, it’s a handy tool that helps run postponed or dedicated code in a separate process or even on a separate computer or server. This saves time and effort on many levels.” VADYM ZAKOVINKO

Which Is Faster in Converting a List to a Set in Python 3: set() or {*} Perhaps surprisingly, there is a performance difference between the two. Read Michael’s article to find out why using a {*} set literal is faster. MICHAEL BASSILI

Video Classification With Keras and Deep Learning In this tutorial, you will learn how to perform video classification using Keras, Python, and Deep Learning. ADRIAN ROSEBROCK

How to Write Pythonic Loops In this course, you’ll see how you can make your loops more Pythonic if you’re coming to Python from a C-style language. You’ll learn how you can get the most out of using range(), xrange(), and enumerate(). You’ll also see how you can avoid having to keep track of loop indexes manually. REAL PYTHON video

Intro to Black, the Uncompromising Python Code Formatter Black is a Python code formatter. It will reformat your entire file in place according to the Black code style, which is pretty close to PEP8. This article shows you the basics of working with Black. MIKE DRISCOLL

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Python Consumes a Lot of Memory or How to Reduce the Size of Objects? An overview of some methods for reducing the size of objects, which can significantly reduce the amount of RAM needed for pure Python programs. HABR.COM

Avoiding Webscraping Throttling Using Python and Tor as a Proxy This post describes how to use Python based web scraping tools and Tor to hide yourself when scraping websites for data. JAMES RUSSO

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Interfaces Are Forever “When publishing interfaces, one must be careful: to a first approximation, they are forever.” MOSHE ZADKA

Automated Code Reviews for Python Take the hassle out of code reviews—Codacy flags errors so you can fix them quickly. Address security concerns, code duplication, code complexity and drops in coverage, directly from your workflow. Click here to get started → CODACY sponsor