🕷️ An adaptive Web Scraping framework that handles everything from a single request to a full-scale crawl! - D4Vinci/Scrapling

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Lark is a parsing toolkit for Python, built with a focus on ergonomics, performance and modularity.

Lark can parse all context-free languages. To put it simply, it means that it is capable of parsing almost any programming language out there, and to some degree most natural languages too.

Scalene: a high-performance, high-precision CPU, GPU, and memory profiler for Python with AI-powered optimization proposals - plasma-umass/scalene

Perforator is a cluster-wide continuous profiling tool designed for large data centers - yandex/perforator

Apache Arrow is a universal columnar format and multi-language toolbox for fast data interchange and in-memory analytics. It contains a set of technologies that enable data systems to efficiently store, process, and move data.

:blue_book: dict subclass with keylist/keypath support, built-in I/O operations (base64, csv, html, ini, json, pickle, plist, query-string, toml, xls, xml, yaml), s3 support and many utilities. - fabiocaccamo/python-benedict

⚡A CLI tool for code structural search, lint and rewriting. Written in Rust - ast-grep/ast-grep

Modern, extensible Python project management

An Experimental Package Management Solution for Python

An extremely fast Python package installer and resolver, written in Rust. - astral-sh/uv

A high-performance Python linter written in Rust. Ruff can replace dozens of static analysis tools, all while executing 10-100x faster.

Textual is a Rapid Application Development framework for Python

Click is a Python package for creating beautiful command line interfaces in a composable way with as little code as necessary.

tox aims to automate and standardize testing in Python. It is part of a larger vision of easing the packaging, testing and release process of Python software.

Python tests inside docstring

Diagrams lets you draw the cloud system architecture in Python code.