This post explains how to run a Python script in terminal or CMD. This is a quick and powerful way to access your programs and improve workflow.

Okay, that's not a very good description of what I am trying to figure out, which is this: I would like to be able to run Python scripts that are part of an installed library. E.g., I would like ...

It's not hard to create and run a shell script in Linux distros like Ubuntu, but there are a few non-obvious pitfalls you need to avoid. Here's a quick example of how to execute a script in Linux.