因此，我必须获取实例(按钮(中现有图像的id，以便将img的所有id存储在一个数组中。有64个按钮，只有16个包含图像，因此总共有16个图像，其中所有图像都不同。下面是我的.kv代码和.py代码的一半。
<Game>:
name: "ChessBoard"
GridLayout:
id: chess_board
cols: 8
rows: 8
padding: ("60dp", "60dp", "60dp", "60dp")
orientation: 'tb-lr'
Button:
id: button_1
background_normal: ''
background_color: (1,1,1,1)
on_press: root.moves(self, root)
AsyncImage:
id: white_1
source: 'imgs/WhiteCastle.png'
center_x: self.parent.center_x
center_y: self.parent.center_y
Button:
id: button_2
background_color: (0, 0, 0, 1)
on_press: root.moves(self, root)
AsyncImage:
id: white_2
source: 'imgs/WhiteKnight.png'
center_x: self.parent.center_x
center_y: self.parent.center_y
Button:
id: button_3
background_normal: ''
background_color: (1,1,1,1)
on_press: root.moves(self, root)
AsyncImage:
id: white_3
source: 'imgs/WhiteBishop.png'
center_x: self.parent.center_x
center_y: self.parent.center_y
Button:
id: button_4
background_color: (0, 0, 0, 1)
on_press: root.moves(self, root)
AsyncImage:
id: white_4
source: 'imgs/WhiteQueen.png'
center_x: self.parent.center_x
center_y: self.parent.center_y
Button:
id: button_5
background_normal: ''
background_color: (1,1,1,1)
on_press: root.moves(self, root)
AsyncImage:
id: white_5
source: 'imgs/WhiteKing.png'
center_x: self.parent.center_x
center_y: self.parent.center_y
Button:
id: button_6
background_color: (0, 0, 0, 1)
on_press: root.moves(self, root)
AsyncImage:
id: white_6
source: 'imgs/WhiteBishop.png'
center_x: self.parent.center_x
center_y: self.parent.center_y
Button:
id: button_7
background_normal: ''
background_color: (1,1,1,1)
on_press: root.moves(self, root)
AsyncImage:
id: white_7
source: 'imgs/WhiteKnight.png'
center_x: self.parent.center_x
center_y: self.parent.center_y
Button:
id: button_8
background_color: (0, 0, 0, 1)
on_press: root.moves(self, root)
AsyncImage:
id: white_8
source: 'imgs/WhiteCastle.png'
center_x: self.parent.center_x
center_y: self.parent.center_y #8
Button:
id: button_9
background_color: (0, 0, 0, 1)
on_press: root.moves(self, root)
AsyncImage:
id: white_9
source: 'imgs/WhitePawn.png'
center_x: self.parent.center_x
center_y: self.parent.center_y
Button:
id: button_10
background_normal: ''
background_color: (1,1,1,1)
on_press: root.moves(self, root)
AsyncImage:
id: white_10
source: 'imgs/WhitePawn.png'
center_x: self.parent.center_x
center_y: self.parent.center_y
Button:
id: button_11
background_color: (0, 0, 0, 1)
on_press: root.moves(self, root)
AsyncImage:
id: white_11
source: 'imgs/WhitePawn.png'
center_x: self.parent.center_x
center_y: self.parent.center_y
Button:
id: button_12
background_normal: ''
background_color: (1,1,1,1)
on_press:root.moves(self, root)
AsyncImage:
id: white_12
source: 'imgs/WhitePawn.png'
center_x: self.parent.center_x
center_y: self.parent.center_y
Button:
id: button_13
background_color: (0, 0, 0, 1)
on_press: root.moves(self, root)
AsyncImage:
id: white_13
source: 'imgs/WhitePawn.png'
center_x: self.parent.center_x
center_y: self.parent.center_y
Button:
id: button_14
background_normal: ''
background_color: (1,1,1,1)
on_press: root.moves(self, root)
AsyncImage:
id: white_14
source: 'imgs/WhitePawn.png'
center_x: self.parent.center_x
center_y: self.parent.center_y
Button:
id: button_15
background_color: (0, 0, 0, 1)
on_press: root.moves(self, root)
AsyncImage:
id: white_15
source: 'imgs/WhitePawn.png'
center_x: self.parent.center_x
center_y: self.parent.center_y
Button:
id: button_16
background_normal: ''
background_color: (1,1,1,1)
on_press: root.moves(self, root)
AsyncImage:
id: white_16
source: 'imgs/WhitePawn.png'
center_x: self.parent.center_x
center_y: self.parent.center_y #16
Button:
id: button_17
background_normal: ''
background_color: (1,1,1,1)
on_press: root.moves(self, root)
Button:
id: button_18
background_color: (0, 0, 0, 1)
on_press: root.moves(self, root)
Button:
id: button_19
background_normal: ''
background_color: (1,1,1,1)
on_press:root.moves(self, root)
Button:
id: button_20
background_color: (0, 0, 0, 1)
on_press: root.moves(self, root)
Button:
id: button_21
background_normal: ''
background_color: (1,1,1,1)
on_press: root.moves(self, root)
Button:
id: button_22
background_color: (0, 0, 0, 1)
on_press: root.moves(self, root)
Button:
id: button_23
background_normal: ''
background_color: (1,1,1,1)
on_press: root.moves(self, root)
Button:
id: button_24
background_color: (0, 0, 0, 1)
on_press: root.moves(self, root)
Button:
id: button_25
background_color: (0, 0, 0, 1)
on_press: root.moves(self, root)
Button:
id: button_26
background_normal: ''
background_color: (1,1,1,1)
on_press: root.moves(self, root)
Button:
id: button_27
background_color: (0, 0, 0, 1)
on_press: root.moves(self, root)
Button:
id: button_28
background_normal: ''
background_color: (1,1,1,1)
on_press: root.moves(self, root)
Button:
id: button_29
background_color: (0, 0, 0, 1)
on_press: root.moves(self, root)
Button:
id: button_30
background_normal: ''
background_color: (1,1,1,1)
on_press: root.moves(self, root)
Button:
id: button_31
background_color: (0, 0, 0, 1)
on_press: root.moves(self, root)
Button:
id: button_32
background_normal: ''
background_color: (1,1,1,1)
on_press: root.moves(self, root)
现在.py:
class Game(Screen):
def __init__(self, **kwargs):
super().__init__(**kwargs)
def img_list(self):
img_ids_list = []
for x in range(1, 17):
img_ids_list.append(f"white_{x}")
for y in range(1, 17):
img_ids_list.append(f"black_{y}")
return img_ids_list
def moves(self, instance, root):
all_ids = root.ids
id_of_button = self.get_id(instance)
img_id = self.check_if_img_exists(instance, root)
def check_if_img_exists(self, instance, root):
img_ids = self.img_list()
if img_ids[0] in root.ids:
print("Ready for launch!")
for x in range(1, 32):
asyncImage = root.ids.img_ids[x]
if asyncImage in instance.children:
print("Button contains an AsyncImage")
return asyncImage
print("Button does not contain an AsyncImage")
def get_id(self, instance):
for id, widget in instance.parent.parent.ids.items():
if widget.__self__ == instance:
return id
我得到的错误是
Traceback (most recent call last):
File "kivyproperties.pyx", line 961, in kivy.properties.ObservableDict.__getattr__
KeyError: 'img_ids'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:UsersZaviyar Zahidkivy-thelabvenvmain.py", line 98, in <module>
ChessApp().run()
File "C:UsersZaviyar ZahidAppDataRoamingPythonPython310site-
packageskivyapp.py",
line 955, in run
runTouchApp()
File "C:UsersZaviyar ZahidAppDataRoamingPythonPython310site-
packageskivybase.py", line 574, in runTouchApp
EventLoop.mainloop()
File "C:UsersZaviyar ZahidAppDataRoamingPythonPython310site-
packageskivybase.py", line 339, in mainloop
self.idle()
File "C:UsersZaviyar ZahidAppDataRoamingPythonPython310site-
packageskivybase.py", line 383, in idle
self.dispatch_input()
File "C:UsersZaviyar ZahidAppDataRoamingPythonPython310site-
packageskivybase.py", line 334, in dispatch_input
post_dispatch_input(*pop(0))
File "C:UsersZaviyar ZahidAppDataRoamingPythonPython310site-
packageskivybase.py", line 263, in post_dispatch_input
listener.dispatch('on_motion', etype, me)
File "kivy_event.pyx", line 731, in kivy._event.EventDispatcher.dispatch
File "C:UsersZaviyar ZahidAppDataRoamingPythonPython310site-
packageskivycorewindow__init__.py", line 1660, in on_motion
self.dispatch('on_touch_down', me)
File "kivy_event.pyx", line 731, in kivy._event.EventDispatcher.dispatch
File "C:UsersZaviyar ZahidAppDataRoamingPythonPython310site-
packageskivycorewindow__init__.py", line 1677, in on_touch_down
if w.dispatch('on_touch_down', touch):
File "kivy_event.pyx", line 731, in kivy._event.EventDispatcher.dispatch
File "C:UsersZaviyar ZahidAppDataRoamingPythonPython310site-
packageskivyuixscreenmanager.py", line 1210, in on_touch_down
return super(ScreenManager, self).on_touch_down(touch)
File "C:UsersZaviyar ZahidAppDataRoamingPythonPython310site-
packageskivyuixwidget.py", line 589, in on_touch_down
if child.dispatch('on_touch_down', touch):
File "kivy_event.pyx", line 731, in kivy._event.EventDispatcher.dispatch
File "C:UsersZaviyar ZahidAppDataRoamingPythonPython310site-
packageskivyuixrelativelayout.py", line 306, in on_touch_down
ret = super(RelativeLayout, self).on_touch_down(touch)
File "C:UsersZaviyar ZahidAppDataRoamingPythonPython310site-
packageskivyuixwidget.py", line 589, in on_touch_down
if child.dispatch('on_touch_down', touch):
File "kivy_event.pyx", line 731, in kivy._event.EventDispatcher.dispatch
File "C:UsersZaviyar ZahidAppDataRoamingPythonPython310site-
packageskivyuixwidget.py", line 589, in on_touch_down
if child.dispatch('on_touch_down', touch):
File "kivy_event.pyx", line 731, in kivy._event.EventDispatcher.dispatch
File "C:UsersZaviyar ZahidAppDataRoamingPythonPython310site-
packageskivyuixbehaviorsbutton.py", line 151, in on_touch_down
self.dispatch('on_press')
File "kivy_event.pyx", line 727, in kivy._event.EventDispatcher.dispatch
File "kivy_event.pyx", line 1307, in kivy._event.EventObservers.dispatch
File "kivy_event.pyx", line 1191, in kivy._event.EventObservers._dispatch
File "C:UsersZaviyar ZahidAppDataRoamingPythonPython310site-
packageskivylangbuilder.py", line 55, in custom_callback
exec(__kvlang__.co_value, idmap)
File "C:UsersZaviyar Zahidkivy-thelabvenvchess.kv", line 122, in <module>
on_press: root.moves(self, root)
File "C:UsersZaviyar Zahidkivy-thelabvenvmain.py", line 49, in moves
img_id = self.check_if_img_exists(instance, root)
File "C:UsersZaviyar Zahidkivy-thelabvenvmain.py", line 57, in check_if_img_exists
asyncImage = root.ids.img_ids[x]
File "kivyproperties.pyx", line 964, in kivy.properties.ObservableDict.__getattr__
AttributeError: 'super' object has no attribute '__getattr__'
如果您查看错误消息，它会抱怨以下行：
asyncImage=root.ids.img_ids[x]
由于root是您的Game实例，因此该代码正在尝试访问Game实例中名为img_ids的id。但您尚未在kv中定义img_ids。我怀疑您实际上打算使用在check_if_img_exists()方法中创建的img_ids变量。尝试将上面的行更改为：
asyncImage = self.ids[img_ids[x]]