问题如题
class Environment():
grid_end = 9
grid_size = grid_end + 1
init_food = 5
food_del_chance = 0.05
food_add_chance = 0.20
def __init__(self):
self.food = set()
for i in range(self.init_food):
X = random.randint(0, self.grid_end)
Y = random.randint(0, self.grid_end)
if not ((X,Y) in self.food):
self.food.add((X,Y))
print("Food at", end=" ")
print(self.food)
def clock_tick(self):
# possibly delete food items -- copy elements not deleted into new set
food_set = set()
for location in self.food:
r = random.random()
if (r > self.food_del_chance):
food_set.add(location)
else:
print("Food disappears at", end=" ")
print(location)
#print(food_set)
self.food = food_set
在Class中的def clock-tick中,把food-set赋值给了self.food,但是self.food并没有更新,还是保持原来的set()。请问如何修改才能让self.food更新?
完整程序连接:https://pan.baidu.com/s/1jpYoqm4eKk5vOvIgYtJDjw
密码:llgj
也许并不是在class Environment()中没更新,可能在class agent中读取时一直读取的是原来的数据。头大。
终于发现问题了,问题存在于class agent中,集合更新使用了self.food-seen.update(percepts)。update会添加新元素进入set(),但是对于消失的元素不会进行删除。