At pypistats.org download numbers of the last half year can be found. * python3-dateutil has 271 downloads from non-mirrors in last month[1]

* jeilifish has only 106 downloads from non-mirrors in last month[2]

[1]:https://pypistats.org/packages/python3-dateutil

[2]: https://pypistats.org/packages/jeilyfish

https://news.ycombinator.com/item?id=21702973