I notice that "python3-dateutil" is in over 4000 github repositories [1]. That sounds like a disaster.
[1]: https://github.com/search?q=python3-dateutil&type=Code - DLD -- David Lowry-Duda <da...@lowryduda.com> <davidlowryduda.com> -- https://mail.python.org/mailman/listinfo/python-list
