C parser in Python

https://github.com/eliben/pycparser

Python Cryptography Toolkit

https://pycrypto.org

CUPS bindings for Python

https://github.com/zdohnal/pycups

Syntax highlighter written in Python

https://pygments.org/

JSON Web Token implementation in Python

https://github.com/jpadilla/pyjwt

Generate and parse RFC 3339 timestamps

https://pypi.org/project/pyRFC3339/

Python SOCKS module

https://github.com/Anorov/PySocks

Snowball Stemming Algorithms for Information Retrieval

https://pypi.org/project/PyStemmer/

Test support for pytest runner in setup.py

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

World Timezone Definitions for Python

https://pythonhosted.org/pytz/

Python parser for RAML

https://github.com/spotify/ramlfications

Python library for RDF manipulation

https://pypi.org/project/rdflib/

HTTP library written in Python for human beings

https://docs.python-requests.org/en/latest/

Pure-Python RSA implementation

https://stuvel.eu/software/rsa/

Unix-like tools to manipulate stored files from the command line

https://s3tools.org/s3cmd

Amazon S3 Transfer Manager for Python

https://github.com/boto/s3transfer

Service identity verification for pyOpenSSL

https://github.com/pyca/service_identity

Setuptools plugin for darcs

https://pypi.org/project/setuptools_darcs/

Setuptools plugin for hg

https://pypi.org/project/setuptools_hg/

Setuptools plugin to manage your versions by scm tags

https://github.com/pypa/setuptools_scm

Simple, fast, extensible JSON encoder/decoder

https://github.com/simplejson/simplejson

Backport of functools.singledispatch from Python 3.4

https://pypi.org/project/singledispatch/

Python 2 and 3 compatibility utilities

https://github.com/benjaminp/six

Snowball stemming library collection for Python

https://pypi.org/project/snowballstemmer/

SPARQL endpoint interface to Python

https://sparqlwrapper.readthedocs.io/en/stable/

Python documentation generator

https://www.sphinx-doc.org/

Mobile-friendly py-sphinx theme

https://github.com/readthedocs/sphinx_rtd_theme

Database schema migrations for SQLAlchemy

https://opendev.org/x/sqlalchemy-migrate

Python SQL toolkit and Object Relational Mapper 1.0.x

http://www.sqlalchemy.org/

Python SQL toolkit and Object Relational Mapper 1.1.x

https://www.sqlalchemy.org/

Python SQL toolkit and Object Relational Mapper 1.2.x

https://www.sqlalchemy.org/

Standard Python binding to the SQLite3 library

Sqlite-backed dictionary

https://github.com/YelpArchive/sqlite3dbm

Non-validating SQL parser for Python

https://pypi.org/project/sqlparse/

Python bindings for version control system

http://subversion.apache.org/

ANSII Color formatting for output in terminal

https://pypi.org/project/termcolor/

Requests-like API built on top of twisted.web's Agent

https://github.com/twisted/treq

Asynchronous networking framework written in Python

https://twistedmatrix.com/

Python wrapper around the Twitter API

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

Python API and command-line toolset for Twitter

https://github.com/sixohsix/twitter

Compatibility API between asyncio/Twisted/Trollius

https://github.com/crossbario/txaio

Ultra fast JSON encoder and decoder for Python

https://github.com/esnme/ultrajson

HTTP library with thread-safe connection pooling, file post, and more

https://pypi.org/project/urllib3/

Tool for creating isolated Python environments

https://virtualenv.pypa.io

Python interface for VTE (Terminal widget)

http://www.gnome.org/

Decorators, wrappers and monkey patching

https://github.com/GrahamDumpleton/wrapt

WebSocket Accelerator for ws4py and AutobahnPython

https://github.com/methane/wsaccel

Python 2 library to access freedesktop.org standards

http://freedesktop.org/Software/pyxdg

PyXML: Python XML library enhancements

http://pyxml.sourceforge.net/

XML parser that returns python dictionaries

https://pypi.org/project/xmltodict/