XML bomb protection for Python stdlib modules

https://bitbucket.org/tiran/defusedxml

Remove TrueType instruction sets (hints) in fonts

https://github.com/source-foundry/dehinter

Library to handle automated deprecations

https://pypi.org/project/deprecation/

Run coverage and linting reports on diffs

https://github.com/Bachmann1234/diff_cover

In-depth comparison of files, archives, and directories

https://diffoscope.org/

Serialize all of python

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

Do dirty (but extremely useful) things with equals

https://dirty-equals.helpmanual.io/latest/ https://github.com/samuelcolvin/dirty-equals

Low-level components of distutils2 and higher-level APIs

https://github.com/pypa/distlib

Linux OS platform information API

https://github.com/nir0s/distro

User registration with social account authentication

https://allauth.org/ https://docs.allauth.org/en/latest/ https://github.com/pennersr/django-allauth

Configurable set of panels to display debug information

https://django-debug-toolbar.readthedocs.io/en/latest/ https://github.com/jazzband/django-debug-toolbar

Lightweight app for interacting with gravatars

https://github.com/twaddington/django-gravatar

Django library to help interaction with Mailman

https://gitlab.com/mailman/django-mailman3

Django Debug Toolbar panel for Requests

https://github.com/marceltschoppch/django-requests-debug-toolbar

High-level Python Web Framework

https://www.djangoproject.com/

High-level Python Web Framework

https://www.djangoproject.com/

Python library for DKIM email signing and verification

https://launchpad.net/dkimpy

Manipulate DNS records on various DNS providers in a standardized way

https://github.com/AnalogJ/lexicon

DNS toolkit for Python

http://www.dnspython.org/

DNS toolkit for Python - 1.x release

https://www.dnspython.org/

Python library for the Docker Engine API

https://github.com/docker/docker-py

Python bindings for the docker credentials store API

https://github.com/shin-/dockerpy-creds/

Pythonic argument parser, that will make you smile

http://docopt.org/

Parse Python docstrings in ReST, Google and Numpydoc format

https://github.com/rr-/docstring_parser

Add flag to ignore unicode literal prefixes in doctests

https://pypi.python.org/pypi/doctest-ignore-unicode

Python Documentation Utilities

http://docutils.sourceforge.net/

Helpful functions for Python

https://domdf-python-tools.readthedocs.io/en/latest/ https://github.com/domdfcoding/domdf_python_tools

Simple implementation of contracts for Python

https://github.com/deadpixi/contracts

Official Dropbox API Client

https://dropbox-sdk-python.readthedocs.io/en/latest/ https://github.com/dropbox/dropbox-sdk-python

Helpful CLI utilities for querying and connecting to EC2 instances

https://github.com/FlipPath/ec2-cli-tools

ECDSA cryptographic signature library (pure python)

https://github.com/warner/python-ecdsa

Editable installations

https://github.com/pfmoore/editables

EditorConfig File Locator and Interpreter for Python

https://editorconfig.org/

XPath 1.0/2.0/3.0 parsers and selectors for ElementTree and lxml

https://github.com/sissaschool/elementpath

Robust email address syntax and deliverability validation library

https://github.com/JoshData/python-email-validator

Extensions to py-rich

https://pypi.org/project/enrich/

Discover and load entry points from installed packages

https://github.com/takluyver/entrypoints

Python 3.4 Enum backported to 3.3, 3.2, 3.1, 2.7

https://pypi.org/project/enum34/

Bindings to the Linux input handling subsystem

https://pypi.org/project/evdev/

Highly concurrent networking library

https://eventlet.readthedocs.io/en/latest/ https://github.com/eventlet/eventlet

Backport of PEP 654 (exception groups)

https://github.com/agronholm/exceptiongroup

Distributed Python deployment and communication

http://codespeak.net/execnet/

Get the currently executing AST node of a frame, and other information

https://github.com/alexmojaki/executing

Expand system variables Unix style

https://github.com/sayanarijit/expandvars

Useful extra bits for Python

https://pypi.org/project/extras/

Create comlex objects for testing purposes

https://github.com/FactoryBoy/factory_boy

Scans log files and bans IP that makes too many password failures

http://www.fail2ban.org/wiki/index.php/Main_Page

High-performance Python framework for building cloud APIs

https://falconframework.org/

Python package that provides useful locks

https://github.com/harlowja/fasteners

Fastimport parser and generator in Python

https://github.com/jelmer/python-fastimport