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Not Functions, But Classes; Exploring Scope; All About Asterisks; and More

#527 – MAY 31, 2022 VIEW IN BROWSER
The PyCoder’s Weekly Logo
Python’s “Functions” Are Sometimes Classes
Ever use list() or enumerate()? Think of them as functions? They’re not, they’re classes. Sometimes we call classes functions in Python. Why? And what’s a “callable”?
TREY HUNNER

Exploring Scopes and Closures in Python
In this Code Conversation video course, you’ll take a deep dive into how scopes and closures work in Python. To do this, you’ll use a debugger to walk through some sample code, and then you’ll take a peek under the hood to see how Python holds variables internally.
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Ultimate Guide to Python Pickle: How To’s, Exploits & Safety
Python’s pickle library is useful in maintaining persistence within complex data structures and objects. Learn how to safely use a pickle in application development using this comprehensive guide →
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All You Need to Know About Asterisks in Python
The * is for more than multiplication, it is also the basis for the two deconstruction operators: * and **. Learn the ins-and-outs of using *args, **kwargs, deconstruction, and forcing keyword-arguments-only in functions.
BAS STEINS

ctx Library Hijacked to Steal AWS Keys
AX SHARMA


Discussions


Useful Python Decorators for Data Scientists
Marton Trencseni posted Useful Python decorators for Data Scientists, a follow-up to the article included in Issue #525. It got posted on Hacker News and strong opinions ensued. Read the article, then weigh in.
HACKER NEWS

Python Standard Library Changes in Recent Years
Discussion based on the previously linked article Python Standard Library Changes in Recent Years.
HACKER NEWS


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Articles & Tutorials


How to Create a Command-Line Application With argparse
Scripts often need either configuration or data to proceed and for many situations this can be passed in on the command line. The standard library argparse helps you parse arguments, add help info, and even alias your commands.
MIKE DRISCOLL

A Quick Way to Animate Your Python Plots
There are lots of choices when developing animated plots, many of which have a steep learning curve. Learn how to create animated GIFs through matplotlib and ImageIO to bash something out quickly.
CHRISTOPHER TAO

Build Web Apps Entirely in Python
With Anvil, you can build seriously powerful web apps with Python - no web dev experience needed! Design your UI with drag-and-drop components. Build your application with Python (not JS or HTML). Deploy in the cloud with one click, or on site with a pip-install. Check it out →
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Lesser Known Django Management Commands
You probably know about runserver, migrate and shell, but there are lots more Django management commands. Learn about diffsettings, sendtestemail, inspectdb, and showmigrations.
GONÇALO VALÉRIO

Animating Regular Expressions With Python and Graphviz
Visualizing regular expressions can help you understand how they work and what a particular expression accomplishes. Read on to learn how to use Graphviz to better understand your regex.
AYDIN SCHWARTZ

Build a CRUD Application Using Django, React & Docker
Step-by-step instructions on creating a web application with a React front-end and the Django Rest Framework as a back-end and all tied together with Docker for distribution.
MANGABO KOLAWOLE

What’s in Which Python
A quick listing of what features were added in which version of Python, going back to Python 2.1 and including links to corresponding PEPs.
NED BATCHELDER

Unlock Secret Knowledge From Python Experts for Just $10
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Native Type/Dunder-Methods in Python
Learn how to make your classes act like native data types through the implementation of double-underscore magic methods.
THEODOROS KARASAVVAS

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.
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Projects & Code


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Mindfulness-at-the-Computer the App
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PyDaddy: Discover SDE Equations From Time-Series Data
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📆🐍 Upcoming Python Events


STL Python
 June 1, 2022

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 June 1, 2022

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 June 2 to June 6, 2022

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 June 2, 2022

Reunión Python Valencia
 June 2, 2022

Virtual PythonCamp Cologne 2022
 June 4 to June 6, 2022
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Building a URL Shortener, Debug Life, Pigeon Deterents, and More

Tuesday, May 24, 2022

Build a URL Shortener With FastAPI and Python #526 – MAY 24, 2022 VIEW IN BROWSER The PyCoder's Weekly Logo Build a URL Shortener With FastAPI and Python In this step-by-step project, you'll

Python's min() and max(), django-rich, Evaluating Dependencies, and More

Tuesday, May 17, 2022

Python's min() and max(): Find Smallest and Largest Values #525 – MAY 17, 2022 VIEW IN BROWSER The PyCoder's Weekly Logo Python's min() and max(): Find Smallest and Largest Values In this

PyCon US 2022 Wrap-Up, Game Engines, PyScript, and More

Tuesday, May 10, 2022

PyCon US 2022 Highlights #524 – MAY 10, 2022 VIEW IN BROWSER The PyCoder's Weekly Logo PyCon US 2022 Highlights “It was wonderful to be back at PyCon US in person again. PyCon is way too big for

Dunder Methods, Closing Files, The GIL, and More

Tuesday, May 3, 2022

Dunder Methods in Python: The Ugliest Awesome Sauce #523 – MAY 3, 2022 VIEW IN BROWSER The PyCoder's Weekly Logo Dunder Methods in Python: The Ugliest Awesome Sauce Double-underscore methods, also

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

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