250 Most Popular pypi Packages

Sniff out which async library your code is running under

Cross-platform lib for process and system monitoring in Python. NOTE: the syntax of this script MUST be kept compatible with Python 2.7.

An implementation of JSON Schema validation for Python

Reusable constraint types to use with typing.Annotated

High level compatibility layer for multiple asynchronous event loop implementations

A pure-Python, bring-your-own-I/O implementation of HTTP/1.1

Yet another URL library

pytest: simple powerful testing with Python

A lil' TOML parser

Python library for Apache Arrow

multidict implementation

Render rich text, tables, progress bars, syntax highlighting, markdown and more to the terminal

HTTP/2-based RPC framework

The next generation HTTP client.

OAuthlib authentication support for Requests.

brain-dead simple config-ini parsing

A minimal low-level HTTP client.

Fast, Extensible Progress Meter

Style preserving TOML library

pyparsing module - Classes and methods to define and execute parsing grammars

Screen-scraping library

A list-like structure which implements collections.abc.MutableSequence

Docutils -- Python Documentation Utilities

A modern CSS selector implementation for Beautiful Soup.

Google Cloud Storage API client library

aiosignal: a list of registered asynchronous callbacks

A utility belt for advanced users of python-requests

Fundamental algorithms for scientific computing in Python

A generic, spec-compliant, thorough implementation of the OAuth request-signing logic

Utility library for gitignore style pattern matching of file paths.

Python Imaging Library (Fork)

Lightweight in-process concurrent programming

Distribution utilities

More routines for operating on iterables, beyond itertools

Accelerated property cache

Python bindings to Rust's persistent data structures (rpds)

Backport of PEP 654 (exception groups)

A Python library to read/write Excel 2010 xlsx/xlsm files

Read key-value pairs from a .env file and set them as environment variables

JSON Referencing + Python

An implementation of lxml.xmlfile for the standard library

Powerful and Pythonic XML processing library combining libxml2/libxslt with the ElementTree API.

The JSON Schema meta-schemas and vocabularies, exposed as a Registry

An ISO 8601 date/time/duration parser and formatter

Pickler class to extend the standard pickle.Pickler functionality

Beautiful, Pythonic protocol buffers

Happy Eyeballs for asyncio

Timeout context manager for asyncio programs

Decorators for Humans

Canonical source for classifiers on PyPI (pypi.org).