Python notes

This Pybites exploration delves into Python generators, explaining how the yield statement enables memory-efficient, on-demand value production crucial for large datasets. It details the mechanics of generator functions, the conciseness of generator expressions, and the advantages of their lazy evaluation and state preservation capabilities.
https://pybit.es/articles/generator-mechanics-expressions-and-efficiency/

Python wrapper for Wikipedia

https://github.com/martin-majlis/Wikipedia-API

This demonstration walks through creating a functional Python compiler using Python, explaining the core steps from source code to execution. It breaks down tokenization, Abstract Syntax Tree (AST) generation, bytecode compilation, and interpretation with a simple virtual machine.
https://dev.to/resource_bunk_1077cab07da/how-i-built-a-python-compiler-yes-really-1dgp

Use Typer (type hints) to define the interface for your Django management commands.

https://github.com/django-commons/django-typer

This recounting by Max Bernstein details a real-world performance optimization saga from developing a custom Python runtime, where a seemingly innocuous string function bottlenecked Django performance. The analysis reveals how a naive Python implementation of str.rpartition led to excessive, costly UTF-8 indexing operations, emphasizing the need to look beyond surface-level profiler results to find the true cause of slowdowns.
https://bernsteinbear.com/blog/silly-perf/

This feature dives into actionable techniques for improving Python code quality, addressing common issues like nested loops, long functions, and unclear conditionals. It provides practical refactoring examples using list comprehensions, modular functions, ternary operators, type hints, and the Loguru library for better logging.
https://dev.to/resource_bunk_1077cab07da/your-python-code-is-ugly-heres-how-to-fix-it-40dm

System-wide Python package discovery, validation, and allow-listing

https://github.com/fetter-io/fetter-rs

This Talk Python episode features Brett Kennedy, author of Outlier Detection with Python, exploring how to identify significant anomalies in data using various Python tools and techniques. The discussion covers real-world applications from finance to astronomy, key libraries like PyOD and scikit-learn, handling large datasets, and the importance of interpretability when dealing with outliers.
https://talkpython.fm/episodes/show/497/outlier-detection-with-python

This comparison evaluates Python and JavaScript for web development, examining their respective strengths and weaknesses through framework matchups like Flask vs. Node.js and Django vs. Express. It provides code samples, performance insights, and guidance to help developers select the appropriate technology stack based on project requirements.
https://dev.to/resource_bunk_1077cab07da/python-vs-javascript-which-wins-for-web-dev-1gbk

coredumpy saves your crash site for post-mortem debugging

https://github.com/gaogaotiantian/coredumpy

isd (interactive systemd) – a better way to work with systemd units

https://github.com/isd-project/isd

"The Python Debugging Playbook" outlines a systematic approach to fixing Python code, framing effective debugging as a learned skill rather than innate talent. This playbook presents a five-step process covering interpreting errors, using breakpoint(), isolating bugs, searching effectively, and structuring requests for help.
https://dev.to/0x3d_site/the-python-debugging-playbook-fix-your-code-4nbb

The fast, Pythonic way to build Model Context Protocol servers 🚀

https://github.com/jlowin/fastmcp

This essay dissects troubleshooting as a fundamental, domain-agnostic skill, defining it as the systematic process of determining and fixing the cause of unwanted system behavior. It outlines a detailed framework for effective troubleshooting, covering aspects like adopting the right mindset, understanding system flows, isolating problems, gathering information, assessing risks, and the importance of patience and detailed observation.
https://www.autodidacts.io/troubleshooting/

This walkthrough, titled "Web Scraping with Python: Learn It Fast!", demonstrates how to automate data collection from websites using Python, focusing on the BeautifulSoup and requests libraries. It covers the essential steps from fetching webpage HTML and extracting specific elements like headlines or prices to saving the data and checking robots.txt for legality.
https://dev.to/0x3d_site/web-scraping-with-python-learn-it-fast-4c6b

Practice debugging, by intentionally introducing bugs into an existing codebase.

https://github.com/ehmatthes/py-bugger

This blog entry by Nick Craux offers practical advice for improving the coding experience with the Cursor AI assistant, drawing from personal use and skepticism. It highlights the importance of configuring .cursorrules files, providing specific code context to the AI, and understanding the tool's limitations and strengths for different coding tasks.
https://www.nickcraux.com/blog/cursor-tips

This piece examines why certain Python libraries, often used for web scraping and automation, can lead to scripts being blocked or blacklisted by cloud providers and websites due to aggressive activity detection or security policies. It discusses specific libraries like Scrapy and Selenium, explains the reasons for potential bans, and offers strategies such as request throttling, using proxies/VPNs, and randomizing behavior to avoid detection.
https://dev.to/snappytuts/pythons-most-banned-scripts-getting-you-blacklisted-55n4

A collaborative note taking, wiki and documentation platform that scales. Built with Django and React. Opensource alternative to Notion or Outline.

https://github.com/suitenumerique/docs

This tutorial explores the security vulnerabilities associated with Python's pickle module, demonstrating how it can be exploited for remote code execution by crafting malicious serialized objects. It emphasizes the critical warning never to unpickle data from untrusted sources, illustrating the risk with a practical example involving a Flask web application and a reverse shell payload.
https://davidhamann.de/2020/04/05/exploiting-python-pickle/