Hi,
The problem is that the viz.input command does nothing during the first pass. It just returns an empty string. So you shouldn't be getting any input windows at all during the first pass. The while loop will loop forever since in python an empty string is greater than the number 5. It seems as though the input boxes are appearing during the first and main pass. Try running the following script. The input box should only appear once. If it appears twice then there is something wrong
Code:
import viz
viz.go()
viz.input('Enter something')