1. (4 pts) Draw a picture illustrating how Python executes the following code. Standard pictures show each name above a square box that contains the tail of an arrow, whose head points to an object. An object is shown as an oval (or rounded-corner square) labelled by the type of the object, whose inside shows its value (which may contain more names, arrows/references: lists can include or omit index numbers). When you change an existing reference, lightly cross out the old arrow and then draw the new one appropriately. Draw the picture with no crossing arrows (practice on a whiteboard and move things around if necessary). script module (execution starts here) 3 z = [x, y, "abc"] z [1] = [z [0], z [2]] script module