Brief note:  /usr/bin/env

Use Python vs. Use Commands:
	Python, readlines, .split()
	Total bogomips with Python script

argparse and Homework 9

List comprehensions, and enumeration strategy
	map and map-like operations
	python vs. python3 popularity survey tool

Use of graphical programs in scripts:
	They'll start up like anything else
		sometimes
		Some web browsers might return right away or not
	Generally speaking, graphical programs are ok with system
		getoutput may be a lesser choice

The environment variables:
	It's in check_vars.py
	We looked before, but maybe it's more interesting now

Python os module in general:
	It does a lot of stuff that you could do with a command
	For example, getcwd or getlogin or kill

Example:  MRI data paths

What about programs that write to standard error?
	Let's try it

You could redirect read and write if you want to
	At some point, we'll cover how to do getoutput in C