给出兵棋推演的python代码，要求单位属性有攻击，防御，HP，攻击距离，单位种类有坦克，步兵，炮兵，飞机

以下是一份简单的兵棋推演的 Python 代码，包括单位属性、种类和基本操作：

class Unit:
    def __init__(self, name, attack, defense, hp, range):
        self.name = name
        self.attack = attack
        self.defense = defense
        self.hp = hp
        self.range = range

class Tank(Unit):
    def __init__(self, name, attack, defense, hp, range):
        super().__init__(name, attack, defense, hp, range)

class Infantry(Unit):
    def __init__(self, name, attack, defense, hp, range):
        super().__init__(name, attack, defense, hp, range)

class Artillery(Unit):
    def __init__(self, name, attack, defense, hp, range):
        super().__init__(name, attack, defense, hp, range)

class Plane(Unit):
    def __init__(self, name, attack, defense, hp, range):
        super().__init__(name, attack, defense, hp, range)

class Board:
    def __init__(self, width, height):
        self.width = width
        self.height = height
        self.grid = [[None for _ in range(width)] for _ in range(height)]

    def add_unit(self, unit, x, y):
        self.grid[y][x] = unit

    def move_unit(self, x1, y1, x2, y2):
        self.grid[y2][x2] = self.grid[y1][x1]
        self.grid[y1][x1] = None

    def attack(self, x, y, target_x, target_y):
        unit = self.grid[y][x]
        target_unit = self.grid[target_y][target_x]
        damage = unit.attack - target_unit.defense
        target_unit.hp -= damage
        if target_unit.hp <= 0:
            self.grid[target_y][target_x] = None

board = Board(10, 10)
tank = Tank("Tank", 5, 5, 10, 1)
infantry = Infantry("Infantry", 3, 2, 5, 1)
artillery = Artillery("Artillery", 6, 3, 8, 2)
plane = Plane("Plane", 8, 4, 6, 3)

board.add_unit(tank, 0, 0)
board.add_unit(infantry, 1, 0)
board.add_unit(artillery, 2, 0)
board.add_unit(plane, 3, 0)

board.attack(0, 0, 1, 0)
board.attack(2, 0, 1, 0)
board.move_unit(3, 0, 3, 5)

这份代码创建了四个不同种类的单位，并将它们放置在一个棋盘上。然后，它模拟了一些行动，包括攻击、移动和攻击。在攻击中，攻击力减去防御力得到伤害值，如果目标单位的 HP 减到 0 或以下，它就被消灭了。在移动中，单位从一个格子移动到另一个格子。