Python version on the HP Prime

[kuenze]

Hi to all,
i am a programming novice interested in astronavigation. I want to write a sight reduction program including the calculation of the most imiportant ephemeris data for sun and the brighter stars. I found some great py code that I can use. but, alas, the code does not run on the HP Python. I managed to import it to the Prime via connectivity kit (thanks to the help I got here in the forum). Anyone familiar with the python version on the HP please help me with data on the documentation of this version. the link to the code on the sun ephemeris is: https://www.celnav.de/page3.htm, sunmoon almanac by hennig Umland.
thank you very much in advance, greetings kunze