无法在网格上的特定位置返回python中的元素

我是Python的初学者，我遇到了一些项目问题。无法在网格上的特定位置返回python中的元素

我的网格看起来像这样：

class World(object): 

def __init__(self): 
    self.grid = [] 
    xsize = 20 
    ysize = 20 
    self.maxX = xsize 
    self.maxY = ysize 


    for irow in range(self.maxY): 
     row = [] 
     for icol in range(self.maxX): 
      row.append(None) 
     self.grid.append(row) 

    positions = [] 
    for i in range(self.maxX): 
     for j in range(self.maxY): 
      positions.append((i,j)) 

    numteam1 = 0 
    numteam2 = 0 
    numrobot = 0 
    randpos = random.sample(positions, numteam1 + numteam2) 
    team1 = randpos[0:numrobot-1] 
    team2 = randpos[numrobot:] 

    for point in team1: 
     x = point[0] 
     y = point[1] 
     self.grid[y][x] = AttackRobot(1, x, y, self) 
     self.grid[y][x] = MedicRobot(1, x, y, filename) 
    for point in team2: 
     x = point[0] 
     y = point[1] 
     self.grid[y][x] = AttackRobot(2,x,y,self) 
     self.grid[y][x] = MedicRobot(2,x,y,self, filename)

，然后我有这个方法：

def test_position(self, x, y): 
    if x <0 or x >= 20: 
     return None 
    if y <0 or y >= 20: 
     return None 
    else: 
     return (self.grid[y][x] = Robot)

此fonction假定在（X，Y）在网格上以返回元件

然后我用这种方法：

def print_board(w): 
print "-" * 60 
for y in range(19,-1,-1): 
    line = "" 
    for x in range(0,20): 
     r = w.test_position(x, y) 
     if r == None: 
      line += ".... " 
     else: 
      if isinstance(r, AttackRobot): 
       rtype = "A" 
      elif isinstance(r, MedicRobot): 
       rtype = "M" 
      else: 
       rtype = "!" 
      if r.get_team() == 1: 
       line += "%s%02i%s " % (rtype, r.get_health(), r.get_direction()) 
      else: 
       line += "%s%02i%s " % (rtype.lower(), r.get_health(), r.get_direction()) 
    print line 
print "-" * 60

我得到一个错误。

Traceback (most recent call last): 
    File "T05.py", line 10, in <module> 
    print_board(world) 
    File "/Users/quentindumoulin/Desktop/test.py", line 19, in print_board 
    if r.get_team() == 1: 
AttributeError: 'bool' object has no attribute 'get_team'

来源

2013-12-09 user3081449

我相信你的意思是用'return self.grid [y] [x] == Robot'来结束'test_position'（注意两个等号）;那不就是一个解析错误吗？ – jwodder

@jwodder：根据'print_board'中的逻辑，我简单地认为'return self.grid [x] [y]'更有可能是什么意思（不知道'= Robot'从哪里偷偷来了）。 – Mac

return (self.grid[y][x] = Robot)

这是什么？
也许你想

return self.grid[y][x]

？

来源

2013-12-09 04:25:26 user2892431

无法在网格上的特定位置返回python中的元素

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