#579 – MAY 30, 2023
Python’s .__call__() Method: Creating Callable Instances
In this tutorial, you’ll learn what a callable is in Python and how to create callable instances using the .__call__() special method in your custom classes. You’ll also code several examples of practical use cases for callable instances in Python.
REAL PYTHON
Sorting a Django Queryset Using Custom Attributes
“Typically, Django allows sorting a queryset by any attribute on the model or related to it in either ascending or descending order. However, what if you need to sort the queryset following a custom sequence of attribute values?”
REDOWAN DELOWAR
Analyze Your Python Code for Security Issues for Free
Semgrep is trusted by hundreds of thousands of developers at top companies, such as GitLab, Snowflake, Slack, and many more, to ensure the security of their code (SAST) and dependencies (SCA). Add your project in 1 minute and see for yourself →
SEMGREP sponsor
Python Decorators and How to Use Them Effectively
This article covers the importance and use of decorators in your code. It introduces you to both function and class decorators and helps you write your own.
TONIE VICTOR
PyPI Was Subpoenaed
In March and April 2023, PyPI received three subpoenas for user data from the US Department of Justice. This blog post covers what was requested and how the PyPI is working to clarify what they retain and can make available in the future. See the associated Hacker News discussion.
PYPI.ORG
Python 3.12.0 Beta 1 Released
CPYTHON DEV BLOG
Removing PGP From PyPI
PYPI.ORG
Discussions
How to Move From Dev to Management/Team Lead Role?
HACKER NEWS
Articles & Tutorials
Writing Python Like It’s Rust
This blog post from Jakub talks about how writing code in Rust has informed a more rigorous approach to his Python. He now uses types more frequently, absorbing the strictness of Rust in his Python coding style. Associated Hacker News conversation
JAKUB BERANEK
Publishing Python Packages to PyPI
In this video course, you’ll learn how to create a Python package for your project and how to publish it to PyPI, the Python Package Repository. Quickly get up to speed on everything from naming your package to configuring it using setup.cfg.
REAL PYTHON course
A New Approach to Find High Paying Remote Jobs
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Using k-Nearest Neighbors (kNN) in Python
In this video course, you’ll learn all about the k-nearest neighbors (kNN) algorithm in Python, including how to implement kNN from scratch. Once you understand how kNN works, you’ll use scikit-learn to facilitate your coding process.
REAL PYTHON course
Programming Types and Mindsets
David expounds on why we should appreciate the features of other languages and how they enable the creativity of their developers, even if we don’t like those features ourselves.
DAVID HANSSON
Using a Golang Package in Python Using Gopy
Including a Golang package in Python using Gopy: A simple way to leverage the power of Golang packages in Python applications.
ARJUN MAHISHI • Shared by Prathamesh
Choosing a Good File Format for Pandas
CSV, JSON, Parquet — which data format should you use for your Pandas data? Itamar compares them and makes recommendations.
ITAMAR TURNER-TRAURING
The Power of Bit Manipulation
In this article, you learn about bit manipulation and how to solve problems efficiently using it in Python.
ANURAG VERMA
Projects & Code
unimport: Remove Unused Import Statements in Your Code
GITHUB.COM/HAKANCELIKDEV • Shared by Hakan Çelik
ChatSQL: Convert Plain Text to SQL Through ChatGPT
GITHUB.COM/ADEMAKDOGAN • Shared by Adem AKDOGAN
pyserde: Dataclass Based Serialization Library
GITHUB.COM/YUKINARIT
pyscan: Rust Based Python Dependency Vulnerability Scanner
GITHUB.COM/ASWINNNN
guidance: Language for Controlling Large Language Models
GITHUB.COM/MICROSOFT
Events
DjangoCon Europe 2023
May 29 to June 3, 2023
DJANGOCON.EU
Weekly Real Python Office Hours Q&A (Virtual)
May 31, 2023
REALPYTHON.COM
Canberra Python Meetup
June 1, 2023
MEETUP.COM
PyData London 2023
June 2 to June 5, 2023
PYDATA.ORG
PyDay La Paz 2023
June 3 to June 4, 2023
PYLAPAZ.ORG
Happy Pythoning!
This was PyCoder’s Weekly Issue #579.
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