pip install testtube==1.1.0

testtube is a Python based continuous test runner. testtube's stir command can, based on a tube.py configuration file, monitor a directory for file changes and execute a pre-configured set of tests when changes occur.

Source
Among fairly niche packages on PyPI.
Over 397 downloads in the last 90 days.

Commonly used with testtube

Based on how often these packages appear together in public requirements.txt files on GitHub.

nose-knows

None

yum

time and path tool

webtest-plus

An extension of WebTest with useful extras, including requests-style authentication.

disabledoc

UNKNOWN

flake8-rst-docstrings

Python docstring reStructuredText (RST) validator

diamond

Smart data producer for graphite graphing package

hmmer

Python interface for HMMER software

infernal

Core library for the Infernal eSports Analytics Infernal library.

trf

A parser and dumper for the fide approved tournament report format: trf

k5test

A library for testing Python applications in self-contained Kerberos 5 environments

jabstract

Test tool for overridable json fixtures

fake-switches

A pluggable switch/router command-line simulator

MockSSH

MockSSH: Mock an SSH server and all commands it supports.

mock-services

Mock services.

dingus

A record-then-assert mocking library

pypi-mobans-pkg

Scaffolding mobans for your Python project.

moban-handlebars

Provide handlebars templating capability to moban.

jinja2-python-version

A Jinja2 extension that adds python version to templates.

bugzscout

Python interface for the FogBugz BugzScout API.

Version usage of testtube

Proportion of downloaded versions in the last 3 months (only versions over 1%).

1.1.0

49.12%

0.2.0

18.39%

1.0.0

18.14%

0.0.1

14.36%