class Actor(object):
	def __init__(self, name):
		self.name = name
		self.func = self.stand

	def stand(self):
		print(self.name + ': ' + 'i stand still')

	def move(self):
		print(self.name + ': ' + 'i move')

actor_list = [Actor('actor_1'), Actor('actor_2')]
actor_list[1].func = actor_list[1].move

for i in actor_list:
	i.func()