CS 115 Lab 9, Spring 2015

Deadlines

• Pre-lab: Tu 3/24/2015 at 7 AM
• Writeup and code (lab09b.py): Tu 4/7/2015 at 4 PM
• Demo (part B): Any lab section, workshop, or open tutoring session before Tu 4/7 at 4 PM. Your last chance is the Tuesday tutoring from 3-4 PM.

Goals

Upon successful completion of this lab, you should be able to understand and write functions using two-dimensional (nested) lists.

Pre-Lab Assignment

Click here for the pre-lab instructions.

Even if you didn't get to the pre-lab by the deadline, you should work through it before proceeding with the rest of the lab. A PDF of the pre-lab is available on Moodle.

Setup

1. Before you start writing code, you will set up a directory for this assignment on the cwolf server. To connect to cwolf, do one of the following:
   • In Windows... Open PuTTY. Fill in cwolf.cs.sonoma.edu as the hostname, and log in using your CS department username and password.
   • In Mac OS X... Open Terminal. Substitute your CS department username for yourusername in the command below:

     ssh yourusername@cwolf.cs.sonoma.edu

     and type your password when prompted.
2. Enter your CS 115 subdirectory by typing

   cd cs115

3. Type pwd (print working directory) and verify that the output is:
   /home/student/yourusername/cs115
4. Create a directory for Lab 9 by typing

   mkdir lab09

5. Enter your Lab 9 directory by typing

   cd lab09

6. Type pwd again, and verify that the output is:
   /home/student/yourusername/cs115/lab09
7. Copy four files into your new directory by typing:

   cp ~srivoire/cs115/pickup/ms*.txt ~/cs115/lab09/

   If you get any errors, call a member of the course staff to help you.
8. Decide whether you want to work directly on cwolf ([remote]) or work on IDLE at your local computer ([local]), and follow the relevant instructions for the rest of the lab.
9. If you're working locally, right-click or control-click to download these 4 files into your default Python directory (C:\Python34 on Windows or Documents on a Mac):
   • ms1.txt
   • ms2.txt
   • ms3.txt
   • ms4.txt

Lab Instructions

Follow the links below to complete each part of this lab.

1. Create a magic square
2. Verify magic squares
3. Submit your code