[GiudiceLab]

I'm not sure if I understand exactly what you want to do, but if you first make the global list and then want to take all the balls out of it, you could:

for row in range(len(ballList)):
		ballList[row].remove()

which will cycle through your list and remove each item.

Or, you could just erase your list by re-initializing it (I think):

ballList = []