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Python Weekly

Welcome to issue 551 of Python Weekly. Let's get straight to the links this week.

News

Popular Python and PHP libraries hijacked to steal AWS keys
PyPI module 'ctx' that gets downloaded over 20,000 times a week has been compromised in a software supply chain attack with malicious versions stealing the developer's environment variables. The threat actor even replaced the older, safe versions of 'ctx' with code that infiltrates the developer's environment variables, to collect secrets like Amazon AWS keys and credentials.

DjangoCon US 2022 Call for Proposals
DjangoCon US 2022 call for proposals is open. Submit your talk and tutorial proposals by 2022-06-10.

Articles, Tutorials and Talks

How To Write Unit Tests For Existing Python Code // Part 1 of 2

This video shows you a practical example of adding unit tests to existing code. This first part focuses on adding tests while not changing the original code. The second part will show how refactoring the code simplifies test writing while also improving the design.

Multitenancy with FastAPI, SQLAlchemy and PostgreSQL
Find out how to split your tenant data using PostgreSQL, extend your FastAPI backend to handle multitenancy and perform migrations with Alembic.

Memory Management in Python - Part 1: What Are Pointers?
A tour of some of CPython’s dark memory magic and unintuitive behaviours!

TDD Practice: Time API with Django
Let's learn some TDD tricks by building a small API with Django. Treat this like a Kata. Follow the steps below exactly the first time through, then practice by completing the task a second time by yourself.

Supervised Clustering: How to Use SHAP Values for Better Cluster Analysis
Cluster analysis is a popular method for identifying subgroups within a population, but the results are often challenging to interpret and action. Supervised clustering leverages SHAP values to identify better-separated clusters using a more structured representation of the data.

The Python GIL: Past, Present, and Future
Learn about the history of Python's GIL and what the future holds for it.

The unreasonable effectiveness of f-strings and re.VERBOSE
A look at one or two ways to make life easier when working with Python regular expressions.

Animating Regular Expressions With Python and Graphviz
Peering into the internals of a regex engine.

Python Standard Library changes in recent years
17 modules with new and improved features.

How to Create a Command-line Application with argparse
Python comes with a built-in library called argparse that you can use to create a command-line interface. In this article, you will learn about Parsing Arguments, Creating Helpful Messages, Adding Aliases, Using Mutually Exclusive Arguments, and Creating a Simple Search Utility.

Useful Python decorators for Data Scientists

PyCon US 2022 Videos

Finding Binary & Decimal Palindromes

Bundling binary tools in Python wheels

How to Make Automatic Supercuts

A New Way to Automate Google Sheets with Python

Just enough git and GitHub to be productive

Interesting Projects, Tools and Libraries

Tetra
A full stack component framework for Django using Alpine.js

PikaScript
Cross platform ultra lightweight embedded Python engine.

NiChord
NiChord is a Python package for visualizing functional connectivity data.

Envelope
Insert a message and attachments and send e-mail / sign / encrypt contents by a single line.

gget
gget enables efficient querying of genomic databases, such as Ensembl, UniProt, NCBI, directly into a Python or terminal programming environment.

Objectiv
Objectiv is open-source product analytics infrastructure with a generic event taxonomy.

import-tracker
Python utility for tracking third party dependencies within a library.

CogDB
Micro Graph Database for Python Applications.

Dotdrop
Save your dotfiles once, deploy them everywhere.

GeminiEngine
Gemini Engine is a monospace 2D ASCII rendering engine. It includes collisions, layers, inputs and the ability to handle solid objects as well as ascii art.

Upcoming Events and Webinars

Virtual: PyData Hamburg Meetup May 2022
There will be following talks

NLP for Hate-speech detection: Why does it matter and what can we do?
Getting Started with MLOps: Tools and Best Practices for Production-Ready Machine Learning Systems

PyData Amsterdam Meetup June 2022
There will be following talks

Yield forecasting at AI powered indoor farms
Designing and building Miro’s clustering feature
Using Machine Leaning to reveal the genetic architecture of vegetable traits

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