Question

我的项目中有2个模块：

1- Ant.py

from threading import Thread
from Ant_farm import Ant_farm

ant_farm = Ant_farm(20, 20)

class Ant(Thread):
    def __init__(self, x, y):
        global ant_farm

        Thread.__init__(self)
        self.x = x
        self.y = y
        ant_farm.matrix[self.x][self.y] = True # At this point the arguments has initialized?


    def move(self, x, y):
        ant_farm.matrix[self.x][self.y] = False
        self.x = x
        self.y = y
        ant_farm.matrix[self.x][self.y] = True  # At this point the value has changed?

    def run(self):
        while True:
            ant_farm.move_ant(self)

t = Ant(0, 0)
print(ant_farm[0][0])
t.move(1, 0)

2- Ant_farm.py

from threading import Condition

def matrix(x, y):
    return [[False for j in range(y)] for i in range(x)]

class Ant_farm():
    def __init__(self, x, y):
        self.c = Condition()    # I don't know if I have to put "self" before
        self.matrix = matrix(x, y)

    def move_ant(self, ant):
        new_pos = {0: tuple(x0, y0 - 1),
                   1: tuple(x0 + 1, y0),
                   2: tuple(x0, y0 + 1),
                   3: tuple(x0 - 1, y0)}
        x0, y0 = ant.x, ant.y
        x1, y1 = new_pos[random.randrange(0, 4)]
        with self.c:
            try:
                while self.matrix[x1][y1]:
                    self.c.wait()
                self.matrix[x0][y0] = False
                ant.move(x1, y1)
                # It's not end and I have to review

            except Exception:   # Wich exceptions can appear?
                pass

    def __str__(self):
        pass

两者都省略了评论。

当我执行Ant模块时，引发此错误：

AttributeError：Ant_farm实例没有属性'__getitem __'

第27行（print(ant_farm[0][0])）中的

。为什么会这样？

Answer 1

正如错误消息所示，您没有定义ant_farm[i]是什么（函数__getitem__）。你可能想在Ant_farm类中找到类似的东西：

def __getitem__(i):
    return self.matrix[i]

无法在其模块外部打印自制矩阵

1 个答案: