Python Trending Weekly #36 (2024-01-20)
Welcome to the Python Trending Weekly, a weekly newsletter about Python, AI and general programming techniques, with the majority links in English and a small portion in Chinese.
The original version of the weekly was written in Chinese. What you are reading here is mostly translated by LLMs.
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🦄Articles & Tutorials
A year ago, the author complained about the miserable state of Python packaging. A year later, has anything improved? Or has it gotten worse? The article discusses the mainstream packaging tools in the community, the PEP standards and their implementation. Although there are many new things, it still seems bleak.
This article organizes 243 videos from last year's PyCon US and Python AU, sorted by the number of views on YouTube. None of them have many views, and the gap between the first and second place is huge.
In Java, the synchronized keyword can be used to ensure that a variable is thread-safe. Is there anything in Python that can achieve the same effect? This article introduces the implementation方案 of the threading module's Lock + context manager + decorator.
PyPy is a Python interpreter with a compatibility layer for its C API that has some performance problems. The author is working on ways to make PyPy's C API faster, and this post describes the work that they have done.
The author has been exposed to coroutines while developing with Python and Kotlin, so she wrote several articles to compare their usage, analyze their details and working principles, covering file reading and writing, HTTP requests, sequences and generators, which can deepen your understanding of coroutines.
Pydantic tries to guess whether Unix timestamps are in seconds or milliseconds, but this causes problems with timestamps from before 1970! As we know, timestamps in the computer world start from 1970-1-1 (the Unix epoch), which means that early timestamps have fewer digits, and if we interpret them as seconds, we'll be off by decades!
How to execute code snippets in real time on a browser? The author open-sourced a tool based on WASI that allows you to execute Python, PHP, Ruby, Lua, Javascript, and SQLite code snippets on a browser.
In a multi-threaded environment, using SQLite may cause the "database is locked" error. The article analyzes two main reasons (SQLite waiting for the lock to time out, writing after reading in a transaction), introduces the corresponding solutions, and specifically mentions the solution provided by Django itself.
Polars is a high-performance Python data processing library built on Rust + Arrow. This tutorial provides a comprehensive introduction to Polars. (See also: Polars Tutorial)
How to implement React-like components in Python? The author attempts to generate HTML with pure Python functions and render it using the lxml library. The article presents some basic experiments to demonstrate the feasibility.
Can we implement a large language model in SQL? ChatGPT says it's beyond SQL's capability. However, the author disagrees! The article details the necessary knowledge to build GPT and eventually implements it in 500 lines of SQL! (See also: the author's annual tradition of doing something incredible with SQL since 2010, such as solving a Rubik's Cube with SQL, implementing a quantum computer simulator in SQL, ...)
🎁 Python Trending Weekly 🎁 organizes its content into seasons, with every 30 issues forming a season. The highlights from the first season have been compiled for your convenience. You can access them online here (Chinese).
🐿️Projects & Resources
Niquests: A drop-in replacement for Requests, with HTTP/3, HTTP/2, Multiplexed Connections, System CAs, Certificate Revocation, DNS over HTTPS / TLS / QUIC or UDP, Async, DNSSEC, and (much) pain removed!
slotscheck: Ensure your
__slots__are working properly
Python's __slot__ variables can reduce instance memory and prevent adding dynamic attributes. But to work properly, all base classes must implement it. This library can check if it's broken, overlapping, redundant, and provides a pre-commit hook.
Supports drag-and-drop widgets, plots, tables, and other explorable Python objects to compose custom analysis tools and dashboards, with support for a wide range of visualization tools, including ipywidgets. (star 3.7K)
A local knowledge base question and answer system that supports any format of files or databases and can be installed and used offline. One-click installation and deployment, supports cross-lingual Q&A, and supports selecting multiple knowledge bases for Q&A. (star 1.9K)
TTS synchronously generates facial expression data, voice to expression, and generates body animation.
By hooking the Canvas function in the Web page, it obtains information such as text and styles, converts it to Markdown format, and finally converts it to Epub, PDF, and Mobi formats.
This project collects 400+ LeetCode problems and solutions in different languages.
A PC-based speech input and subtitle transcription tool that is completely offline, has unlimited duration, low latency, high accuracy, supports mixed Chinese and English input, automatic Arabic numerals, and automatic adjustment of Chinese and English spacing. It supports hotkey functions, diary functions, transcription functions, etc.
A multilingual document OCR toolkit that supports accurate line-level text detection. The downside is that it doesn't work for images and handwritten text. (3.6k stars)
A powerful short-context voice conversion and text-to-speech WebUI, featuring zero-shot TTS, few-shot TTS, cross-lingual support, and a WebUI tool. (2.7k stars)
A RAG demo project on Windows, based on the LLaMa 2 13B model, TensorRT-LLM, and the FAISS vector search library.
Write high-quality ChatGPT prompts in a structured, templated way, overcoming the lack of systematicity and flexibility in regular prompt creation. (2.8k stars)
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