まずは関数を入れるやつから

def drill(val):
print("drill:" + str(val))

def saw(val):
print("chain saw:" + str(val))

def vulcan(val):
print("vulcan:" + str(val))


class Robot():
def __init__(self):
self.right_hand = drill
self.left_hand = vulcan


if __name__ == '__main__':
r1 = Robot()
r1.right_hand(123)