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Dunder Methods, Closing Files, The GIL, and More

#523 – MAY 3, 2022 VIEW IN BROWSER
The PyCoder’s Weekly Logo
Dunder Methods in Python: The Ugliest Awesome Sauce
Double-underscore methods, also known as “dunder methods” or “magic methods” are an ugly way of bringing beauty to your code. Learn about constructors, __repr__, __str__, operator overloading, and getting your classes working with Python functions like len().
JOHN LOCKWOOD

Why Is It Important to Close Files in Python?
Model citizens use context managers to open and close file resources in Python, but have you ever wondered why it’s important to close files? In this tutorial, you’ll take a deep dive into the reasons why it’s important to close files and what can happen if you dont.
REAL PYTHON

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When Python Can’t Thread: A Deep-Dive Into the GIL’s Impact
Python’s Global Interpreter Lock (GIL) stops threads from running in parallel or concurrently. Learn how to determine the impact of the GIL on your code.
ITAMAR TURNER-TRAURING

micro:bit Python Editor Beta 3 Released
MICROBIT.ORG

2022 “Call for Code” Global Challenge Accepting Entries
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Jupyter Community Workshops: Call for Proposals
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Discussions


Python Shouldn’t Be the Top Programming Language
Discussion of the controversial article Python Is Now Top Programming Language β€” But Shouldn’t Be
HACKER NEWS

When Would You Use the Lambda Function?
REDDIT


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Articles & Tutorials


Python Testing With doctest
Python’s doctest module allows you to write unit tests through REPL-like sessions in your doc-strings. Learn how to write and execute doctest code. Also available in video.
MIKE DRISCOLL

Handling Retries in Python Requests
When coding with requests and urllib3 you can automatically retry failed connections through the use of requests.adapters.HTTPAdapter and urllib3.Retry. Don’t code retry loops manually, learn how to take advantage of the features of the libraries.
MARKKU LEINIΓ– β€’ Shared by Markku LeiniΓΆ

Merge Faster with WorkerB for PRs Chrome Extension
The average pull request sits idle for two days! Add context to your PR & merge faster with WorkerB magic links. Get estimated review time, number of changes, & related issues in one click! Install it today β†’
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Understanding Train Test Split
The Train-Test-Split methodology is useful for supervised machine learning with a given data set. It helps ensure that new data is more likely to be categorized correctly. Learn how to use it with Python and scikit-learn.
MICHAEL GALARNY β€’ Shared by Michael Galarnyk

Pagination for a User-Friendly Django App
In this tutorial, you’ll learn how to serve paginated content in your Django apps. Using Django pagination can significantly improve your website’s performance and give your visitors a better user experience.
REAL PYTHON

Code Quality Tools in Python
The article describes what code quality means and introduces some cool tools to improve your Python, including a variety of linters, formatters, and IDE tools.
DOLLAR DHINGRA β€’ Shared by Dollar Dhingra

Notes on Debugging
All programmers have to learn how to do it, and like all skills it takes practice. Learn some hints and approaches to the bane of us all: debugging.
IONEL CRISTIAN MΔ‚RIEȘ

CData Software β€” The Easiest Way to Connect Python With Data
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MicroPython in Docker Containers
Want to play with MicroPython without a board? Learn how to use the Unix port of MicroPython in a Docker container to test out your code.
BHAVESH KAKWANI

Incorporating Julia Into Python Programs
Learn what you need to get Julia running inside your Python programs, using PyJulia, PyCall, and how to set up your environments.
PETER BAUMGARTNER


Projects & Code


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exceptionite: Make Prettier Exceptions a Cinch
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πŸ“†πŸ Upcoming Python Events


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 April 27 to May 6, 2022

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 May 4, 2022

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 May 4, 2022

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 May 5, 2022

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 May 6 to May 8, 2022
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Type Hints in Multi-Version Code, Extras for Enum, Django Users, and More

Tuesday, April 26, 2022

Type Hints in Code Supporting Multiple Python Versions #522 – APRIL 26, 2022 VIEW IN BROWSER The PyCoder's Weekly Logo Type Hints in Code Supporting Multiple Python Versions The typing module

WASM, Python Keywords, PyInstaller, and More

Tuesday, April 19, 2022

Build an Editor in Python and WebAssembly #521 – APRIL 19, 2022 VIEW IN BROWSER The PyCoder's Weekly Logo Build an Editor in Python and WebAssembly Step-by-step instructions on how to build a code

Levenshtein Distances, urllib, Python's Performance, and More

Tuesday, April 5, 2022

Python's `urllib.request` for HTTP Requests #519 – APRIL 5, 2022 VIEW IN BROWSER The PyCoder's Weekly Logo Python's urllib.request for HTTP Requests In this tutorial, you'll be making

James Webb Telescope, Large JSON Files, Pillow, and More

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Python and the James Webb Space Telescope #518 – MARCH 29, 2022 VIEW IN BROWSER The PyCoder's Weekly Logo Python and the James Webb Space Telescope Python is used extensively in the data pipeline

Lists vs Tuples, Building Hash Tables, Frame-Based Editing, and More

Tuesday, March 22, 2022

Python `list` vs `tuple` Comparison #517 – MARCH 22, 2022 VIEW IN BROWSER The PyCoder's Weekly Logo Python list vs tuple Comparison Learn how list and tuple are similar and how they are different,

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