CS 0007: Fall 2009 Lab 5

YOUR NAME:                        


YOUR PARTNER'S NAME:

****PART 1:  Practice reading code with while loops; using a list to
             make code clearer

Download get_command.py from the course schedule.

First, read, understand, and run get_valid_command1.  

The while loop in get_valid_command1 has condition True!  So, it
should run forever!!  But, there is a case when the loop terminates.

QUESTION:  In what situation does the while loop terminate (without
   you killing the program).  Explain how it terminates.  

ANSWER:



Now, read, understand, and run get_valid_command2.  There is no
question to answer - just be sure you understand how it works.

Now, let's see the power of lists!!

TODO: uncomment and write function get_valid_command3 according to its
docstring.

Call it with different lists of valid commands, such as
["abs","max","min"], or
["media.get_red","media.get_green","media.show","media.set_color"].

See, you could use get_valid_command3 for ANY set of commands you care
about.  You could reuse this function in any program where you are
prompting the user for a command!

****PART 2:  Nested loops

For this question, we will work with a list of lists and nested loops.

Please download lab5.py and following the directions in the comments.