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

JSON Matching Expressions

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

JOSE protocol implementation in Python

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

Implementation of JSON Reference for Python

https://pypi.org/project/jsonref/

Fast and thorough lazy object proxy

https://github.com/ionelmc/python-lazy-object-proxy

Python support for libpeas

https://wiki.gnome.org/Projects/Libpeas

Python interface for XML parser library for GNOME

http://xmlsoft.org/

New features in linecache backported to Python 2

https://pypi.org/project/linecache2/

Python bindings for low-level FUSE API

https://github.com/python-llfuse/python-llfuse

Toolkit for logging of library method calls

https://github.com/reef-technologies/logfury

Pythonic binding for the libxml2 and libxslt libraries

https://lxml.de/ https://github.com/lxml/lxml

Python binding for the LZ4 compression library

https://github.com/python-lz4/python-lz4

Python binding for the LZMA compression library

http://www.joachim-bauch.de/projects/python/pylzma

Convert markdown formatted file with reST markup to reST format

https://github.com/miyakogi/m2r

Super-fast templating language in Python

http://www.makotemplates.org/

Python implementation of Markdown

https://python-markdown.github.io/ https://github.com/Python-Markdown/markdown

Fast and complete Python implementation of Markdown

http://code.google.com/p/python-markdown2/

Ned's script to check McCabe complexity

https://pypi.org/project/mccabe/

Basic functions for handling mime-types in Python

http://code.google.com/p/mimeparse/

Fastest markdown parser in pure Python

https://github.com/lepture/mistune

Rolling backport of unittest.mock for all Pythons

https://mock.readthedocs.org/en/latest/

Python 3 monotonic time module for Python 2

https://github.com/atdt/monotonic

More routines for operating on iterables, beyond itertools

https://github.com/more-itertools/more-itertools

Python MPD client library

https://pypi.org/project/python-mpd/

Python Library for Arbitrary-precision Floating-point Arithmetic

https://www.mpmath.org/

MessagePack (de)serializer for Python

https://msgpack.org/ https://github.com/msgpack/msgpack-python

Python-based audio metadata tag reader and writer

https://github.com/quodlibet/mutagen

Discovery-based unittest extension

https://nose.readthedocs.io/

The Numeric Extension to Python

http://numeric.scipy.org/

The New Numeric Extension to Python

https://www.numpy.org/

Python library for OAuth version 1.0

https://github.com/joestump/python-oauth2

Python interface to the OpenSSL library

https://github.com/pyca/pyopenssl

Python bindings for ORBit2

Python SSH2 protocol library

https://www.paramiko.org/

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

https://github.com/bear/parsedatetime

General parsing module for Python

https://pypi.python.org/pypi/pyparsing

Python Build Reasonableness

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

Python module for controlling interactive programs in pseudo-terminal

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

Fork of the Python Imaging Library (PIL)

https://python-pillow.org/ https://github.com/python-pillow/Pillow

Tool for installing and managing Python packages

https://pip.pypa.io/en/latest/

Interface Python with pkg-config

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

Plugin and hook calling mechanisms for Python

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

Python Lex-Yacc

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

Python 3 compatible PostgreSQL database driver and tools

http://python.projects.postgresql.org/

Library for stubbing in Python

https://github.com/alex/pretend

Process utilities module for Python

https://github.com/giampaolo/psutil

High performance Python adapter for PostgreSQL

http://initd.org/psycopg/

Run a subprocess in a pseudo terminal

https://github.com/pexpect/ptyprocess