All is fixed
# findEnemies returns a list of all your enemies.
# Only attack shamans. Don't attack yaks!
enemies = hero.findEnemies()
enemyIndex = 0
# Wrap this section in a while loop to iterate all enemies.
# While the enemyIndex is less than the length of enemies
while enemyIndex < len(enemies):
enemy = enemies[enemyIndex]
if enemy.type == 'shaman':
while enemy.health > 0:
hero.attack(enemy)
# Remember to increment enemyIndex
enemyIndex += 1