我有这个带有距离属性的 RoomPlaceholder 类；当您设置距离属性时，它应该根据随机角度和距离自动计算类的 x 和 y 应该是什么。
class RoomPlaceholder:
def __init__(self, width, height):
self.width = width
self.height = height
self.id = ''.join(random.choice(string.ascii_uppercase + string.digits) for x in range(8))
self.angle = Util.getRandomAngle() # = random.random() * math.pi * 2
self.distance = 0
@property
def distance(self):
print "gamma"
return self._distance
@distance.setter
def distance(self, value):
print "delta"
self._distance = value
coords = Util.getXYByDist(value, self.angle) # translates angle and distance into integer (x, y)
print coords
self._x = coords[0]
self._y = coords[1]
@property
def x(self):
return self._x
@property
def y(self):
return self._y
def __repr__(self):
return "%s: [%sx%s] @ (%s, %s) Distance: %s. Angle: %s." % (self.id, self.width, self.height, self.x, self.y, self.distance, self.angle)
if __name__ == "__main__":
room = RoomPlaceholder(5,5)
print "%s\n" % room.distance
room.distance = 10
print "%s\n" % room.distance
print room
pass
但是，它不起作用。根据控制台的输出，它看起来像是将距离视为属性而不是属性；请注意，我在 getter ("gamma") 和 setter ("delta") 方法中都有打印语句，但是当我获取或设置距离时，我们从未在输出中看到：
Traceback (most recent call last):0
File "D:\Dropbox\Programming\Python\DungeonGenerator\NewDungeonGenerator.py", line 142, in <module>
10
print room
File "D:\Dropbox\Programming\Python\DungeonGenerator\NewDungeonGenerator.py", line 132, in __repr__
return "%s: [%sx%s] @ (%s, %s) Distance: %s. Angle: %s." % (self.id, self.width, self.height, self.x, self.y, self.distance, self.angle)
File "D:\Dropbox\Programming\Python\DungeonGenerator\NewDungeonGenerator.py", line 97, in x
return self._x
AttributeError: RoomPlaceholder instance has no attribute '_x'
[Finished in 0.0s]
我正在使用 Python 2.7，这是通过 Windows 7 中的 Sublime Text 3 运行的。