Automate Python testing across multiple Python versions.
Use tox.ini to configure environments and test command.
More information: https://github.com/tox-dev/tox.
Run tests on all test environments:
tox
Create a tox.ini configuration:
tox-quickstart
List the available environments:
tox --listenvs-all
Run tests on a specific environment (e.g. python 3.6):