check5.txt

Edit this file and then submit it to autolab.

Be sure to watch the videos very carefully, and not just
skip ahead to the parts required to answer these questions!

Be *very brief* in your answers!  Seriously.  Brief.

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1. Your full name and andrew id:

2. The full names and andrew id's of your groupmates (if you worked collaboratively).


3. 2d Lists

3.1: Describe why "[ [0] * cols ] * rows" is not a good way to allocate a 2d list.

3.2: if a = [ [ 1, 2, 3 ] , [ 4, 5, 6] ] what is len(a)? len(a[1])?

3.3: Why do we use two loops (nested) in order to iterate through a 2d list? (As opposed to one loop.)

3.4: In the context of a 2d list, describe the difference between a shallow copy and a deep copy.  What is a situation where deep copy still isn't good enough?

3.5: Why did we write a custom version of print2dList(a) instead of just calling print(a)?

3.6: Why does accessing a whole column require a loop, but accessing a whole row does not?

3.7: if a = [ [ 1, 2 ] , [ 4, 5, 6], [7, 8, 9, 10] ] what is len(a)? len(a[2])?

3.8: Describe a problem scenario that a 3d list would help you solve.


4. Animation Part 1: Event-Based Animation

4.1: Which animation functions are associated with the Model, the View, and the Controller?

4.2: Write a single line of code that could add the variable circleRadius to the model, and set it to the value 50.

4.3: Rewrite the following draw function from graphics to instead be a redrawAll function from animations (which doesn't take width and height as parameters).

def draw(canvas, width, height):
    canvas.create_rectangle(0, 0, width, height, fill="green")

4.4: Try out the mousePressed sample code. What happens when you click on the edge of the window? What happens when you click outside the window?

4.5: Identify three keys that have different event.char values than event.keysym values, and list their values here.