One possible use case is distributing tests across multiple machines. The pytest plugin commonly used for this, pytest-xdist, currently relies on a package call

One possible use case is distributing tests across multiple machines. The pytest plugin commonly used for this, pytest-xdist, currently relies on a package called execnet for the cross-machine bootstrapping. But the author of execnet is stopping development now mitogen is a thing: https://twitter.com/ossronny/status/1013373649259257856 https://twitter.com/ossronny/status/1013373649259257856