Write a function to create a movie where one item is moving from the top to the bottom and another item is moving from the bottom to the top.

Question

What will be an ideal response?

Answer 1

```
def movingRectangle3(directory):
for num in range (1 ,30): #29 frames
canvas = makeEmptyPicture (300 ,250)
#add a filled rect moving linearly
addRectFilled(canvas,0,num*7,50,50,red)
addRectFilled(canvas,0 ,200-num*7 ,50,50,blue)
# Now , write out the frame
# Have to deal with single digit vs. double digit
numStr=str(num)
if num < 10:
writePictureTo ( canvas , directory +"//frame0"+ numStr +".jpg")
if num >= 10:
writePictureTo ( canvas , directory +"//frame"+ numStr +".jpg")
movie = makeMovieFromInitialFile(directory+"//frame00.jpg");
return movie
```