tox-py 1.2.0

Adds the --py flag to tox to run environments matching a given Python interpreter.

Adds the --py flag to tox to run environments matching a given Python interpreter.

Installation

Use pip:

python -m pip install tox-py

Python 3.7 to 3.10 supported.

Only tox 3 is supported. On tox 4, ensure only your target Python version is installed, and run tox --skip-missing-interpreters. (See discussion.)

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Usage

After installation, the plugin will be automatically picked up by tox. It adds one argument: --py, which takes the version to filter environments against. The version can be specified either as a tox.ini-style dotless version number, or the special string current for the version of Python that tox is running under.

For example, to run all Python 3.9 environments:

tox --py 39

Or to run all environments matching the version of Python that tox is running under:

tox --py current

This makes configuring CI really easy: configure your CI to trigger each Python version in parallel, running tox --py current.