Question

我没有面向对象编程的经验。我主要用C编程，所以这往往有点令人困惑。基本上我只是想确保我正确地做到了。另外，这是一个继承的工作示例吗？

好的，所以我初始化了一个20x20网格世界并将每个元素设置为None。

class World:
    def __init__(self):
        self.arr = [[None for x in range(20)] for y in range(20)]

现在我需要在给定x，y坐标的情况下将对象放入指定的元素中。这是世界级的一种方法。

def add_attack_robot(self, team, x, y, direction):
        self.arr[x][y] = AttackRobot() <---- **Is this correct?**

这是AttackRobot类：

class AttackRobot(Robot):
    def __init__(self,team,x,y,direction):
        Robot.__init__(self,team,x,y,direction)

Answer 1

创建列表列表似乎很合理。在解释器中自己尝试一下（这是关于新Python程序员可以采取的最佳建议）：

>>> [[None for x in range(20)] for y in range(20)]
[[None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None], [None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None], [None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None], [None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None], [None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None], [None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None], [None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None], [None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None], [None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None], [None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None], [None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None], [None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None], [None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None], [None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None], [None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None], [None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None], [None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None], [None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None], [None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None], [None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None]]

当您尝试实例化AttackRobot时，您会看到：

TypeError: __init__() takes exactly 5 arguments (1 given)

传递team，x，y和direction的有效值（self是隐含的），您应该设置！

E.g：

self.arr[x][y] = AttackRobot(team, x, y, direction)

制作2d对象列表（Python 2.7）

1 个答案: