tox

Installing tox

pip install tox

After installing tox, create an empty tox.ini file and run the tox command. This will generate a .tox folder in the project directory.

.tox

The .tox folder contains subdirectories named .pkg, .tmp, and py. The .pkg and py folders contain Python virtual environments. Among these environments, you should use the virtual environment in the py folder for project debugging and testing. The virtual environment in the .pkg folder is only used during the build process.

Folder	Purpose	Should you use its interpreter?
.pkg	Builds the package before testing	❌
.tmp	Used by tox for storing cache and temporary files	❌
py	Contains the virtual environment that users should make use of	✅