How to fix a : TypeError 'tuple' object does not support item assignment

Change this

badguy[0]-=7

into this

badguy = list(badguy)
badguy[0]-=7
badguy = tuple(badguy)

from : https://stackoverflow.com/questions/19338209/how-to-fix-a-typeerror-tuple-object-does-not-support-item-assignment