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Welcome to issue 508 of Python Weekly. Let's get straight to the links this week.

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News

Łukasz Langa is the inaugural CPython Developer-in-Residence!
Łukasz will work full-time for one year to assist CPython maintainers and the Steering Council. Areas of responsibility will include analytical research to understand the project's volunteer hours and funding, investigation of project priorities and their tasks going forward, and begin working on those priorities.

Articles, Tutorials and Talks

Solving The Rocket Equation: Optimal Way To Expel Fuel

In this video I seek to solve the ODE specifying the motion of rocket ships in python. In particular, I seek the best way to expel fuel to make the rocket travel as quickly and efficiently as possible.

Python behind the scenes #11: how the Python import system works
The Python import system doesn't just seem complicated – it is complicated. So even though the documentation is really good, it doesn't give you the full picture of what's going on. The only way to get such a picture is to study what happens behind the scenes when Python executes an import statement. And that's what we're going to do in this post.

Let's write a Toy Emulator in Python
In this tutorial we will be creating an emulator in python that can run programs such as printing Fibonacci series or Triangular numbers.

HomeKit Connected Fence Door Monitoring System
Learn how to create a solar powered, HomeKit connected outdoor fence door monitoring device. Once set up, the door’s state (i.e. open/close) can be monitored and used in automations within the HomeKit ecosystem.

Bite-sized refactoring
This post shows you why refactoring is important and show you how to do it in little steps, so that it doesn't become too overwhelming.

Apple Music Stream Data Analysis
Learn how to analyze your personal music streaming data from Apple Music.

What You Should Know About The Django User Model
The goal of this article is to discuss the caveats of the default Django user model implementation and also to give you some advice on how to address them.

What’s New In Python 3.11
This article explains the new features in Python 3.11, compared to 3.10.

Learn you a Kedro
After a brief description of what Kedro is and why it is likely to become a standard part of every data scientist’s toolchain, the author describes some technical Kedro concepts and illustrates how to use them with a tutorial.

Filters in Django – filter(A, B) vs filter(A).filter(B)
Understand how Django ORM works a little bit better, especially how it handles joins.

Guide to Reinforcement Learning with Python and TensorFlow
In this article, we present complete guide to reinforcemen learning and one type of it Q-Learning (which with the help of deep learning become Deep Q-Learning). We learn about the inspiration behind this type of learning and implement it with Python, TensorFlow and TensorFlow Agents.

PySpark Tutorial

Learn PySpark, an interface for Apache Spark in Python. PySpark is often used for large-scale data processing and machine learning.

Why not just use async Python for this API?

Friendlier tracebacks in REPLs (including Jupyter)

How to Name Django Migrations (and Why It's Important)

Closures in Python | Explained with animations

Interesting Projects, Tools and Libraries

AutoHarness
A tool that automatically creates fuzzing harnesses based on a library.

icyAI
A project for which the author recreated the game Icy Tower in Python with Pygame and built an AI that learns how to play it.

Pickora
A small compiler that can convert Python scripts to pickle bytecode.

abbr-cli
A command-line tool to look up abbreviations for terms (and the reverse).

QMsolve
A module for solving and visualizing the Schrödinger equation.

hookshot
Integrated web scraper and email account data breach comparison tool.

pyleniumio
Bring the best of Selenium and Cypress into a single Python package.

New Releases

Python 3.10.0b4 is available

Upcoming Events and Webinars

Virtual: PyLadies Dublin Meetup July 2021
There will be a talk, FastAPI, Lambdas, PyTest and other cool things.

Virtual: PyBerlin 30
There will be following talks

Asynchronous Code With Python
Three paradigms for method inheritance in Python

Virtual: San Diego Python Meetup July 2021
There will be following talks

Serverless Application Framework
Bring Out the Best in Us with GPT-J

DerbyPy Meetup July 2021 - Louisville, KY

Virtual: SF Python Presentation Night

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