Question

What editor is he using to run his modules?

Answer 1

When you open up idle go the the file tab and click on new windos. this is what you will use.

Answer 2

For using the IDLE editor, you have to download python (It's linked in the very first asignement, or you can just goole it, be sure to use the version they use aswell 2.5 I think) Then you install it, and open it. The window should read "Python Shell". This is where the code is running and where you also can type one lined commands. To actually write your code you need to click on File>New Window. This will open the editor IDLE.
Although technically you can use the simple windows editor to WRITE you code (not to run it), it is way easier to use IDLE.

Answer 3

http://www.python.org/download/
here you can dowload de last version

Answer 4

Be sure to use Python 2.7.2 so your code is similar to the one the prof uses (allowing you to do the PSets without having to modify anything and just simply copy and paste, fewer weird problems, etc.)