Collect or create intro to Python

[illicitonion]

We want our trainees to feel comfortable:

• Writing a small program which takes some command line arguments
• Write a small program which reads a file
• Pull in a dependency to avoid having to write some code

Some example programs we want our trainees to be able to write implementations of (that just take arguments, they don't need to be able to read from stdin):

• cat
• wc
• ls