Modern, extensible Python build backend

https://github.com/pypa/hatch/tree/master/backend

Print binary in hex format

https://pypi.org/project/hexdump/

Classes and setuptools plugin for Mercurial repositories

https://github.com/jaraco/hgtools

Python extension that wraps hiredis

https://github.com/pietern/hiredis-py

HTTP/2 header encoding (HPACK) logic implementation

https://hyper.rtfd.org/

Chromium HSTS Preload list

https://github.com/sethmlarson/hstspreload

Fast implementation of the HTML 5 parsing spec for Python

https://html5-parser.readthedocs.io/

Python based HTML parser based on the HTML5 spec

https://github.com/html5lib

HTML Minifier

https://htmlmin.readthedocs.io/en/latest/ https://github.com/wilhelmer/htmlmin

Minimal low-level HTTP client

https://www.encode.io/httpcore/ https://github.com/encode/httpcore

Comprehensive HTTP client library

https://github.com/httplib2/httplib2

Next generation HTTP client

https://www.python-httpx.org/ https://github.com/encode/httpx

Python module that decodes binary streams into HTTP/2 frames

https://hyper.rtfd.org/

Featureful, correct URL for Python

https://github.com/python-hyper/hyperlink

Library for property based testing

https://hypothesis.works/ https://hypothesis.readthedocs.io/en/latest/ https://github.com/HypothesisWorks/hypothesis/tree/master/hypothesis-python

File identification library for Python

https://github.com/pre-commit/identify

Internationalized Domain Names in Applications (IDNA)

https://github.com/kjd/idna

Patch ssl.match_hostname for Unicode(idna) domains support

https://github.com/aio-libs/idna-ssl

Python Library to enumerate all network interfaces

https://github.com/pydron/ifaddr

Python image size library

https://github.com/shibukawa/imagesize_py

Collection of Python classes providing access to network packets

https://www.coresecurity.com/corelabs-research/open-source-tools/impacket

Read metadata from Python packages

https://github.com/python/importlib_metadata

Read resources from Python packages

https://github.com/python/importlib_resources

Library that versions your Python projects

https://pypi.org/project/incremental/

Generate plurals, singular nouns, ordinals, indefinite articles

https://github.com/jaraco/inflect

Simple parsing of ini files in Python

https://pypi.org/project/iniconfig/

Library for installing Python wheels

https://installer.pypa.io/en/stable/ https://github.com/pypa/installer

Regex intersection checker

https://github.com/MegaIng/interegular

Editable interval tree data structure for Python 2 and 3

https://github.com/chaimleib/intervaltree

Python task execution tool & library

https://github.com/pyinvoke/invoke

Google open source IPv4/IPv6 manipulation library in Python

https://github.com/google/ipaddr-py

Simple module to parse ISO 8601 dates

https://bitbucket.org/micktwomey/pyiso8601

ISO 8601 date/time/duration parser and formater

https://pypi.org/project/isodate/

Python utility/library to sort Python imports

https://github.com/PyCQA/isort

Various helpers to pass data in untrusted environments

https://github.com/mitsuhiko/itsdangerous/

Shared namespace shim for py-jaraco.* ports

Python models and classes to supplement the stdlib ‘collections’

https://github.com/jaraco/jaraco.collections

Context managers by jaraco

https://github.com/jaraco/jaraco.context

Additional functools for Python

https://github.com/jaraco/jaraco.functools

Tools to supplement packaging Python releases

https://github.com/jaraco/jaraco.packaging

Module for text manipulation

https://github.com/jaraco/jaraco.text

Autocompletion tool for Python

https://github.com/davidhalter/jedi

Low-level, pure Python DBus protocol wrapper

https://gitlab.com/takluyver/jeepney

JSON Matching Expressions

https://github.com/jmespath/jmespath.py

Lightweight pipelining using Python functions as jobs

https://joblib.readthedocs.io/

JOSE protocol implementation in Python

https://josepy.readthedocs.io/en/latest/

Ultimate Python library for JOSE RFCs

https://jose.authlib.org/en/dev/ https://github.com/authlib/joserfc

JavaScript unobfuscator and beautifier

https://jsbeautifier.org/

JavaScript minifier written in Python

https://github.com/tikitu/jsmin

Diff JSON and JSON-like structures in Python

https://github.com/xlwings/jsondiff