General parsing module for Python

https://pyparsing-docs.readthedocs.io/en/latest/ https://github.com/pyparsing/pyparsing

Module to hyphenate text based on Hunspell dictionaries

https://pyphen.org/

Cython wrapper to provide python interfaces to PROJ.4 functions

https://pyproj4.github.io/pyproj/stable/ https://github.com/pyproj4/pyproj

API to interact with the python pyproject.toml based projects

https://pyproject-api.readthedocs.io/

Wrappers to call pyproject.toml-based build backend hooks

https://pyproject-hooks.readthedocs.io/en/latest/ https://github.com/pypa/pyproject-hooks

PEP 621 metadata parsing

https://github.com/FFY00/python-pyproject-metadata

Pure Python QR code generator with SVG, EPS, PNG and terminal output

https://github.com/mnooner256/pyqrcode

Generate and parse RFC 3339 timestamps

https://pypi.python.org/pypi/pyRFC3339

Command line wrapper for pyright

https://github.com/RobertCraigie/pyright-python

Persistent/Functional/Immutable data structures

https://github.com/tobgu/pyrsistent

Python interface to sendfile(2)

https://github.com/giampaolo/pysendfile

Serial port encapsulation library for Python

https://github.com/pyserial/pyserial

Python SOCKS module

https://github.com/Anorov/PySocks

Deal PySol FC Cards

https://pypi.org/project/pysol-cards/

SPF (Sender Policy Framework) implemented in Python

https://github.com/sdgathman/pyspf

Snowball Stemming Algorithms for Information Retrieval

https://pypi.python.org/pypi/PyStemmer/

Simple powerful testing with Python

https://docs.pytest.org/en/latest/

Py.test plugin providing fixtures and markers for asyncio

https://pypi.org/project/pytest-asyncio/

pytest fixture for benchmarking code

https://github.com/ionelmc/pytest-benchmark

pytest plugin to enable format checking with black

https://github.com/shopkeep/pytest-black

Allow --black on older Pythons

https://github.com/jaraco/pytest-black-multipy

Pytest plugin with mechanisms for caching across test runs

https://bitbucket.org/hpk42/pytest-cache/

Py.test plugin to capture log messages

https://bitbucket.org/memedough/pytest-capturelog/overview

Check the README when running tests

https://github.com/jaraco/pytest-checkdocs

Pytest plugin for testing console scripts

https://github.com/kvas-it/pytest-console-scripts

Pytest plugin for measuring coverage

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

pytest plugin for test data directories and files

https://pypi.org/project/pytest-datadir/ https://github.com/gabrielcnr/pytest-datadir

Enable installed pytest plugins

https://github.com/jaraco/pytest-enabler

Py.test plugin that allows you to add environment variables

https://github.com/MobileDynasty/pytest-env

pytest plugin to check FLAKE8 requirement

https://pypi.org/project/pytest-flake8/

Run tests in isolated forked subprocesses

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

Pytest plugin for generating html reports

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

HTTP server for pytest

https://github.com/csernazs/pytest-httpserver

py.test plugin to check import ordering using isort

https://github.com/moccu/pytest-isort

Use fixtures in pytest.mark.parametrize

https://github.com/TvoroG/pytest-lazy-fixture

Pytest plugin for test session metadata

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

Thin wrapper around the mock package for easier use with py.test

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

Mypy static type checker plugin for pytest

https://github.com/realpython/pytest-mypy

Pytest plus plugin :: extends pytest functionality

https://github.com/pycontribs/pytest-plus

Pytest plugin to randomly order tests and control random.seed

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

Relaxed test discovery/organization for pytest

https://pytest-relaxed.readthedocs.io/

Re-run tests to eliminate flaky failures

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

Test support for pytest runner in setup.py

https://bitbucket.org/jaraco/pytest-runner

Fixtures and utility functions to run service processes for pytest

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

unittest subTest() support and subtests fixture

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

Changes the look and feel of pytest

https://github.com/Teemu/pytest-sugar

Pytest plugin to abort hanging tests

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

Pytest plugin for trio

https://pypi.org/project/pytest-trio/ https://github.com/python-trio/pytest-trio

Pytest xdist plugin for distributed testing and loop-on-failing modes

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

Simple powerful testing with Python (legacy version 4)

https://docs.pytest.org/en/latest/