week2.py

'''

Demonstrate function definitions (def), lists ([]), and looping over iterables like lists (for). 
Check https://docs.python.org/3/tutorial/controlflow.html for how to do this. 

Discuss the following way to discover the software: 

1. Ask the users. 
2. Write code tests. 
3. Write code. 
4. Test the code.
5. Commit the code if it works, otherwise write more code tests, code, and test the code.
6. Deliver the product, go back to step 1. 

Check http://www.informit.com/articles/article.aspx?p=1621865 for more about this. 

Show how to create a file in github.com, and at the same time, 
create a different file in your local git repository, then do git push and git pull. 

Check https://help.github.com/articles/creating-new-files/ for more on this. 

Show how to create and resolve merge conflicts or 'edit collisions'. 

For more on this, check https://help.github.com/articles/resolving-a-merge-conflict-from-the-command-line/. 

Use subprocess to test IP addresses.

Show how to use help(): https://docs.python.org/2/library/functions.html#help. 

Show how to create and use docstrings: https://www.python.org/dev/peps/pep-0257/
'''