NFS-safe file locking with timeouts for POSIX systems

https://flufllock.readthedocs.io

Random assortment of WSGI servers

https://bitbucket.org/denisenkom/flup

Font version reporting and modification tool

https://github.com/source-foundry/font-v

Set of objects for performing math operations on font data

https://github.com/typesupply/fontMath

Font analysis tool for determining character/glyph support

https://github.com/googlefonts/pyfontaine

Well designed Font QA tool

https://github.com/googlefonts/fontbakery

Compile fonts from sources to binary

https://github.com/googlei18n/fontmake

Open source library for manipulating fonts, written in Python

https://github.com/fonttools/fonttools

Open source library for manipulating fonts, written in Python

https://github.com/fonttools/fonttools

HTML form validation, generation, and conversion package

https://www.formencode.org/

Simple PDF generation for Python

https://code.google.com/p/pyfpdf/

Freetype python bindings

https://github.com/rougier/freetype-py

Let your Python tests travel through time

https://github.com/spulec/freezegun

List-like structure which implements collections.abc.MutableSequence

https://github.com/aio-libs/frozenlist

Python filesystem abstraction

http://pyfilesystem.org/

Python Filesystem abstraction layer, version 2.x

https://www.pyfilesystem.org/

Mail scanning daemon for Postfix written in Python

https://fuglu.org/

Python function signatures from PEP362

http://funcsigs.readthedocs.org/

Clean customizable Sphinx documentation theme

https://github.com/pradyunsg/furo

Clean single-source support for Python 3 and 2

https://python-future.org/

Module designed to write games in Python

https://www.pygame.org/news

AST that abstracts the underlying Python version

https://github.com/serge-sans-paille/gast

Python bindings to the GNU dbm library (Python 3.10)

Toolkit for generation of output for the web

https://genshi.edgewall.org/

Allows you to run a test with multiple data sets

https://github.com/box/genty

Python co-routine networking library based on greenlet

https://www.gevent.org/ https://python-gevent.readthedocs.io/ https://github.com/gevent/gevent

Python API for evaluating language support in the Google Fonts collection

https://github.com/googlefonts/lang

Codepoint definitions for the Google Fonts subsetter

https://github.com/googlefonts/nam-files

Documentation generator for GObject-based libraries

https://gitlab.gnome.org/GNOME/gi-docgen

Git Object Database

https://gitdb.readthedocs.io/en/latest/ https://github.com/gitpython-developers/gitdb

Git Object Database

https://pypi.org/project/gitdb2/

Python Git Library

https://github.com/gitpython-developers/GitPython

Bridge from Glyphs source files (.glyphs) to UFOs

https://github.com/googlei18n/glyphsLib

Python Extension that Wraps the GMP Library

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

GMP/MPIR, MPFR, and MPC interface to Python

https://pypi.org/project/gmpy2/

Common files for the Python bindings for GObject

Google API Client Library for Python

https://developers.google.com/api-client-library/python/

Google Authentication Library

https://github.com/googleapis/google-auth-library-python

Google Authentication Library: httplib2 transport

https://github.com/googleapis/google-auth-library-python-httplib2

Build and validate addresses in localized formats

https://pypi.org/project/google-i18n-address/

Common protobufs used in Google APIs

https://github.com/googleapis/python-api-common-protos

Free Google Translate API that translates totally free of charge

https://github.com/ssut/py-googletrans

GraphQL implementation for Python

https://github.com/graphql-python/graphql-core-next

Simple Python interface for Graphviz

https://github.com/xflr6/graphviz

Light-weight microthreads for Python

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

HTTP/2-based RPC framework

https://pypi.org/project/grpcio/

gRPC extensions for Google Cloud Platform

https://github.com/GoogleCloudPlatform/grpc-gcp-python

Status proto mapping for gRPC

https://grpc.io/ https://github.com/grpc/grpc/tree/master/src/python/grpcio_status

Protobuf code generator for gRPC

https://pypi.org/project/grpcio-tools/

GStreamer python bindings

https://gstreamer.freedesktop.org/