Thanks so much for your replies! They help more than you know. Now, final question (I think), how would I get a specific (older) version of astropy rather than the newest? Can that be done through some pip command?
So I can’t get astropy to work on pythonista... Whenever I run a script requiring astropy it spits out the error ‘Astropy requires NumPy version 1.13.0 or later’ yet the version of NumPy I have is 1.16.0, which I assume was later? How could I fix this?