Need assistance - zsh on Mac to run pyILPer

[smp]

Thanks a million, Sylvain!

I'm no power user, by any stretch of the imagination. I'll slowly go through all that you've given me, and try to get this done. If (probably when) I have any questions, I'll post them back here.

Thanks again!

smp

UPDATE:
YES!!! All I needed to do was: cp .bash_profile .zprofile
As you suggested, I logged out of all open Terminal windows, and quit the Terminal.
Then when I did a fresh login to the Terminal, all I have to do is type: pyilper, and up it comes, just like before.

Thank you very much for the details about what's in there and what I needed to do!