In case your python/ipython shell doesn’t have a working history, e.g. pressing ↑ only prints some nonsensical ^[[A, then you are missing either the readline or ncurses library.
Ipython is more descriptive that something is wrong, but if you’re in the habit of mostly using python as a quick calculator, you might never notice:
If you’re using Miniconda then just do:
conda install ncurses readline
And ↑ should work:
