Python module for parsing 'human readable' date/time expressions

https://github.com/bear/parsedatetime

Python Parser

https://github.com/davidhalter/parso

Comprehensive password hashing framework supporting over 30 schemes

https://bitbucket.org/ecollins/passlib

Library to parse and apply unified diffs

https://github.com/conan-io/python-patch-ng

Object-oriented paths

https://github.com/p1c2u/pathable

Object-oriented filesystem paths

https://pypi.org/project/pathlib2/

Utility library for pattern matching of file paths

https://pypi.org/project/pathspec/

Python Build Reasonableness

https://github.com/openstack-dev/pbr

Pure-Python PDF toolkit

https://mstamy2.github.io/PyPDF2/

Build backend used by PDM that supports latest packaging standards

https://backend.pdm-project.org/ https://github.com/pdm-project/pdm-backend

PEP 517 backend for PDM that supports PEP 621 metadata

https://github.com/pdm-project/pdm-backend/tree/legacy

Python module to read and work with PE files

https://github.com/erocarrera/pefile

Python package to ease datetimes manipulation

https://pendulum.eustace.io

Utilities to check whether version numbers match PEP 440

https://github.com/Carreau/pep440

Check PEP-8 naming conventions, plugin for flake8

https://pypi.org/project/pep8-naming/

Python module for controlling interactive programs in pseudo-terminal

https://pexpect.readthedocs.io/en/stable/ https://github.com/pexpect/pexpect

Factory+Registry pattern for Python classes

https://github.com/todofixthis/class-registry/

Pidfile management for Python

https://pypi.org/project/pid/

Fork of the Python Imaging Library (PIL)

https://python-pillow.github.io/ https://pillow.readthedocs.io/en/stable/ https://github.com/python-pillow/Pillow

Interface Python with pkg-config

https://pypi.org/project/pkgconfig/

Query metadatdata from sdists / bdists / installed packages

https://pypi.org/project/pkginfo/

Python module for determining appropriate platform-specific dirs

https://platformdirs.readthedocs.io/en/latest/ https://github.com/tox-dev/platformdirs

Library for collaborative, interactive, publication-quality graphs

https://plotly.com/python/

Plugin and hook calling mechanisms for Python

https://pluggy.readthedocs.io/en/latest/ https://github.com/pytest-dev/pluggy

Plugin and hook calling mechanisms for Python

https://github.com/pytest-dev/pluggy

Support library for building plugins sytems in Python

https://github.com/mitsuhiko/pluginbase

Python Lex-Yacc

http://www.dabeaz.com/ply/

Python PNG encoder/decoder

https://github.com/drj11/pypng

Collection of helpful Python tools

https://pypi.org/project/pockets/

Poetry PEP 517 Build Backend

https://github.com/python-poetry/poetry-core

Python library to parse and manage gettext catalogs

https://bitbucket.org/izi/polib/

Band-oriented PDF report generation from database query

http://newcenturycomputers.net/projects/pollyreports.html

Pure Python Off-The-Record encryption

https://github.com/afflux/pure-python-otr/

Lightweight YAML Parser

https://pypi.org/project/poyo/

Library for stubbing in Python

https://github.com/alex/pretend

Pure-Python implementation of the HTTP/2 priority tree

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

Pure-Python implementation of the HTTP/2 priority tree

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

Library for building powerful interactive command lines in Python

https://python-prompt-toolkit.readthedocs.io/en/master/ https://github.com/prompt-toolkit/python-prompt-toolkit

Google protobuf Python Client Library

https://github.com/protocolbuffers/protobuf

Standalone version of Adobe AFDKO's autohinter

https://github.com/adobe-type-tools/psautohint

Process utilities module for Python

https://github.com/giampaolo/psutil

PostgreSQL database adapter for Python - C optimization distribution

https://www.psycopg.org/psycopg3/ https://github.com/psycopg/psycopg/tree/master/psycopg_c

Connection Pool for Psycopg

https://www.psycopg.org/psycopg3/ https://github.com/psycopg/psycopg/tree/master/psycopg_pool

High performance Python adapter for PostgreSQL

http://initd.org/psycopg/

Run a subprocess in a pseudo terminal

https://github.com/pexpect/ptyprocess

Get public suffix of domain name from Public Suffix List (Fork)

https://github.com/nexb/python-publicsuffix2

Safely evaluate AST nodes without side effects

https://github.com/alexmojaki/pure_eval

Pure python implementation of magic file detection

https://pypi.org/project/puremagic/

Library with cross-python path, ini-parsing, io, code, log facilities

https://pylib.org/

Module for getting CPU info with pure Python

https://github.com/workhorsy/py-cpuinfo