Agreed, although I think there's more than just a comparing spelling issue here. "dateutil" via pip is installed using "pip install python-dateutil". I can easily see someone thinking "python3-dateutil" is simply a Py3 compatible version of "python-dateutil". The "python3-dateutil" module imported "jeIlyfish" so my guess is that the creator banked more on people installing the fake dateutil library than directly downloading jeIlyfish.