"id usage in kivy:" AttributeError: 'super' object has no attribute '__getattr__'
"id usage in kivy:" AttributeError: 'super' object has no attribute '__getattr__'
简介：
所以，我正在尝试制作这个过滤掉 youtube 算法的 kivy 应用程序（基本上它让我只能看到我订阅的频道的视频）
问题
我正在尝试为我的订阅屏幕创建列表，以便我也可以列出我订阅的频道...我在“SubscriptionScreen”的“MDList”中使用了 ID“subs_id”
ScrollView:
MDList:
id: subs_id
我正在尝试从“on_start”函数引用它，但我无法这样做并添加小部件列表项...（下面给出的错误）
整个代码：
from kivymd.app import MDApp
from kivymd.uix.screen import Screen
from kivy.lang import Builder
from kivy.core.window import Window
from kivy.uix.screenmanager import ScreenManager
from kivymd.uix.list import OneLineListItem
Window.size = (300, 500)
screen_helper = """
ScreenManager:
HomeScreen:
SubscriptionScreen:
<HomeScreen>:
name: 'home'
BoxLayout:
orientation: 'vertical'
MDToolbar:
title: 'YouTube'
left_action_items: [["youtube", lambda x: app.navigation_draw()]]
right_action_items: [["magnify", lambda x: app.search_popup()]]
MDIconButton:
icon: "youtube-subscription"
md_bg_color: app.theme_cls.primary_color
pos_hint: {'center_x':0.5, 'center_y':0.5}
on_press: root.manager.current = "subscriptions"
MDLabel:
text: 'hello world'
halign: 'center'
MDRectangleFlatButton:
text:'profile'
pos_hint: {'center_x':0.5, 'center_y':0.5}
on_press: root.manager.current = "subscriptions"
<SubscriptionScreen>:
name: 'subscriptions'
BoxLayout:
orientation: 'vertical'
MDToolbar:
title: 'YouTube'
left_action_items: [["youtube", lambda x: app.navigation_draw()]]
right_action_items: [["magnify", lambda x: app.search_popup()]]
MDIconButton:
icon: "youtube-subscription"
md_bg_color: app.theme_cls.primary_color
pos_hint: {'center_x':0.5, 'center_y':0.5}
on_press: root.manager.current = "profile"
ScrollView:
MDList:
id: subs_id
"""
class HomeScreen(Screen):
pass
class SubscriptionScreen(Screen):
pass
sm = ScreenManager()
sm.add_widget(HomeScreen(name='home'))
sm.add_widget(SubscriptionScreen(name='subscriptions'))
sm.current = "home"
class DemoApp(MDApp):
def build(self):
self.theme_cls.primary_palette='Red'
screen = Builder.load_string(screen_helper)
return screen
def on_start(self):
for i in range(1,20):
item = OneLineListItem(text="krish naik")
self.root.ids.subs_id.add_widget(item)
DemoApp().run()
什么需要维修？
self.root.ids.subs_id.add_widget(item)
Error/output:
[INFO ] [Logger ] Record log in C:\Users\rahim\.kivy\logs\kivy_21-06-22_121.txt
[INFO ] [deps ] Successfully imported "kivy_deps.gstreamer" 0.3.2
[INFO ] [deps ] Successfully imported "kivy_deps.angle" 0.3.0
[INFO ] [deps ] Successfully imported "kivy_deps.glew" 0.3.0
[INFO ] [deps ] Successfully imported "kivy_deps.sdl2" 0.3.1
[INFO ] [Kivy ] v2.0.0
[INFO ] [Kivy ] Installed at "C:\Users\rahim\PycharmProjects\yt_filter\venv\lib\site-packages\kivy\__init__.py"
[INFO ] [Python ] v3.9.5 (tags/v3.9.5:0a7dcbd, May 3 2021, 17:27:52) [MSC v.1928 64 bit (AMD64)]
[INFO ] [Python ] Interpreter at "C:\Users\rahim\PycharmProjects\yt_filter\venv\Scripts\python.exe"
[INFO ] [Logger ] Purge log fired. Analysing...
[INFO ] [Logger ] Purge 51 log files
[INFO ] [Logger ] Purge finished!
[INFO ] [KivyMD ] 0.104.2, git-bc7d1f5, 2021-06-06 (installed at "C:\Users\rahim\PycharmProjects\yt_filter\venv\lib\site-packages\kivymd\__init__.py")
[INFO ] [Factory ] 186 symbols loaded
[INFO ] [Image ] Providers: img_tex, img_dds, img_sdl2, img_pil (img_ffpyplayer ignored)
[INFO ] [Text ] Provider: sdl2
[INFO ] [Window ] Provider: sdl2
[INFO ] [GL ] Using the "OpenGL" graphics system
[INFO ] [GL ] GLEW initialization succeeded
[INFO ] [GL ] Backend used <glew>
[INFO ] [GL ] OpenGL version <b'4.6.13596 Compatibility Profile Context 20.10.35.02 27.20.1034.6'>
[INFO ] [GL ] OpenGL vendor <b'ATI Technologies Inc.'>
[INFO ] [GL ] OpenGL renderer <b'AMD Radeon(TM) Vega 8 Graphics'>
[INFO ] [GL ] OpenGL parsed version: 4, 6
[INFO ] [GL ] Shading version <b'4.60'>
[INFO ] [GL ] Texture max size <16384>
[INFO ] [GL ] Texture max units <32>
[INFO ] [Window ] auto add sdl2 input provider
[INFO ] [Window ] virtual keyboard not allowed, single mode, not docked
[INFO ] [GL ] NPOT texture support is available
Traceback (most recent call last):
File "kivy\properties.pyx", line 861, in kivy.properties.ObservableDict.__getattr__
KeyError: 'subs_id'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:\Users\rahim\PycharmProjects\yt_filter\mian.py", line 90, in <module>
DemoApp().run()
File "C:\Users\rahim\PycharmProjects\yt_filter\venv\lib\site-packages\kivy\app.py", line 949, in run
self._run_prepare()
File "C:\Users\rahim\PycharmProjects\yt_filter\venv\lib\site-packages\kivy\app.py", line 944, in _run_prepare
self.dispatch('on_start')
File "kivy\_event.pyx", line 709, in kivy._event.EventDispatcher.dispatch
File "C:\Users\rahim\PycharmProjects\yt_filter\mian.py", line 86, in on_start
self.root.ids.subs_id.add_widget(item)
File "kivy\properties.pyx", line 864, in kivy.properties.ObservableDict.__getattr__
AttributeError: 'super' object has no attribute '__getattr__'
Process finished with exit code 1
YouTube 很有用，但算法会毁了你的生活，所以我想出了这个主意...
我的想法是，我只能访问我在应用程序中列出的频道中的视频，摆脱 YouTube 应用程序，告别邪恶的算法。
from kivymd.app import MDApp
from kivymd.uix.screen import Screen
from kivy.lang import Builder
from kivy.core.window import Window
from kivy.uix.screenmanager import ScreenManager
from kivymd.uix.list import OneLineListItem
Window.size = (300, 500)
screen_helper = """
ScreenManager:
HomeScreen:
SubscriptionScreen:
<HomeScreen>:
name: 'home'
BoxLayout:
orientation: 'vertical'
MDToolbar:
title: 'YouTube'
left_action_items: [["youtube", lambda x: app.navigation_draw()]]
right_action_items: [["magnify", lambda x: app.search_popup()]]
MDIconButton:
icon: "youtube-subscription"
md_bg_color: app.theme_cls.primary_color
pos_hint: {'center_x':0.5, 'center_y':0.5}
on_press: root.manager.current = "subscriptions"
MDLabel:
text: 'hello world'
halign: 'center'
MDRectangleFlatButton:
text:'profile'
pos_hint: {'center_x':0.5, 'center_y':0.5}
on_press: root.manager.current = "subscriptions"
<SubscriptionScreen>:
name: 'subscriptions'
BoxLayout:
orientation: 'vertical'
MDToolbar:
title: 'YouTube'
left_action_items: [["youtube", lambda x: app.navigation_draw()]]
right_action_items: [["magnify", lambda x: app.search_popup()]]
MDIconButton:
icon: "youtube-subscription"
md_bg_color: app.theme_cls.primary_color
pos_hint: {'center_x':0.5, 'center_y':0.5}
on_press: root.manager.current = "profile"
ScrollView:
MDList:
id: subs_id
"""
class HomeScreen(Screen):
pass
class SubscriptionScreen(Screen):
pass
sm = ScreenManager()
sm.add_widget(HomeScreen(name='home'))
subscription_screen = SubscriptionScreen(name='subscriptions')
sm.add_widget(subscription_screen)
sm.current = "home"
class DemoApp(MDApp):
def build(self):
self.theme_cls.primary_palette = 'Red'
screen = Builder.load_string(screen_helper)
return screen
def on_start(self):
print("this is my app", self)
print("this is the app widget visual", self.root)
print("this is the dictionnary containing all the id/widgets referenced on THE FIRST LVL of my app",
self.root.ids)
print("yes subs_id is not in because each widget can only see the id of the widgets declared on him.")
print("this is my screenManager", sm)
print("this is my subscription screen", subscription_screen)
DemoApp().run()
简介： 所以，我正在尝试制作这个过滤掉 youtube 算法的 kivy 应用程序（基本上它让我只能看到我订阅的频道的视频）
问题
我正在尝试为我的订阅屏幕创建列表，以便我也可以列出我订阅的频道...我在“SubscriptionScreen”的“MDList”中使用了 ID“subs_id”
ScrollView:
MDList:
id: subs_id
我正在尝试从“on_start”函数引用它，但我无法这样做并添加小部件列表项...（下面给出的错误）
整个代码：
from kivymd.app import MDApp
from kivymd.uix.screen import Screen
from kivy.lang import Builder
from kivy.core.window import Window
from kivy.uix.screenmanager import ScreenManager
from kivymd.uix.list import OneLineListItem
Window.size = (300, 500)
screen_helper = """
ScreenManager:
HomeScreen:
SubscriptionScreen:
<HomeScreen>:
name: 'home'
BoxLayout:
orientation: 'vertical'
MDToolbar:
title: 'YouTube'
left_action_items: [["youtube", lambda x: app.navigation_draw()]]
right_action_items: [["magnify", lambda x: app.search_popup()]]
MDIconButton:
icon: "youtube-subscription"
md_bg_color: app.theme_cls.primary_color
pos_hint: {'center_x':0.5, 'center_y':0.5}
on_press: root.manager.current = "subscriptions"
MDLabel:
text: 'hello world'
halign: 'center'
MDRectangleFlatButton:
text:'profile'
pos_hint: {'center_x':0.5, 'center_y':0.5}
on_press: root.manager.current = "subscriptions"
<SubscriptionScreen>:
name: 'subscriptions'
BoxLayout:
orientation: 'vertical'
MDToolbar:
title: 'YouTube'
left_action_items: [["youtube", lambda x: app.navigation_draw()]]
right_action_items: [["magnify", lambda x: app.search_popup()]]
MDIconButton:
icon: "youtube-subscription"
md_bg_color: app.theme_cls.primary_color
pos_hint: {'center_x':0.5, 'center_y':0.5}
on_press: root.manager.current = "profile"
ScrollView:
MDList:
id: subs_id
"""
class HomeScreen(Screen):
pass
class SubscriptionScreen(Screen):
pass
sm = ScreenManager()
sm.add_widget(HomeScreen(name='home'))
sm.add_widget(SubscriptionScreen(name='subscriptions'))
sm.current = "home"
class DemoApp(MDApp):
def build(self):
self.theme_cls.primary_palette='Red'
screen = Builder.load_string(screen_helper)
return screen
def on_start(self):
for i in range(1,20):
item = OneLineListItem(text="krish naik")
self.root.ids.subs_id.add_widget(item)
DemoApp().run()
什么需要维修？
self.root.ids.subs_id.add_widget(item)
Error/output:
[INFO ] [Logger ] Record log in C:\Users\rahim\.kivy\logs\kivy_21-06-22_121.txt
[INFO ] [deps ] Successfully imported "kivy_deps.gstreamer" 0.3.2
[INFO ] [deps ] Successfully imported "kivy_deps.angle" 0.3.0
[INFO ] [deps ] Successfully imported "kivy_deps.glew" 0.3.0
[INFO ] [deps ] Successfully imported "kivy_deps.sdl2" 0.3.1
[INFO ] [Kivy ] v2.0.0
[INFO ] [Kivy ] Installed at "C:\Users\rahim\PycharmProjects\yt_filter\venv\lib\site-packages\kivy\__init__.py"
[INFO ] [Python ] v3.9.5 (tags/v3.9.5:0a7dcbd, May 3 2021, 17:27:52) [MSC v.1928 64 bit (AMD64)]
[INFO ] [Python ] Interpreter at "C:\Users\rahim\PycharmProjects\yt_filter\venv\Scripts\python.exe"
[INFO ] [Logger ] Purge log fired. Analysing...
[INFO ] [Logger ] Purge 51 log files
[INFO ] [Logger ] Purge finished!
[INFO ] [KivyMD ] 0.104.2, git-bc7d1f5, 2021-06-06 (installed at "C:\Users\rahim\PycharmProjects\yt_filter\venv\lib\site-packages\kivymd\__init__.py")
[INFO ] [Factory ] 186 symbols loaded
[INFO ] [Image ] Providers: img_tex, img_dds, img_sdl2, img_pil (img_ffpyplayer ignored)
[INFO ] [Text ] Provider: sdl2
[INFO ] [Window ] Provider: sdl2
[INFO ] [GL ] Using the "OpenGL" graphics system
[INFO ] [GL ] GLEW initialization succeeded
[INFO ] [GL ] Backend used <glew>
[INFO ] [GL ] OpenGL version <b'4.6.13596 Compatibility Profile Context 20.10.35.02 27.20.1034.6'>
[INFO ] [GL ] OpenGL vendor <b'ATI Technologies Inc.'>
[INFO ] [GL ] OpenGL renderer <b'AMD Radeon(TM) Vega 8 Graphics'>
[INFO ] [GL ] OpenGL parsed version: 4, 6
[INFO ] [GL ] Shading version <b'4.60'>
[INFO ] [GL ] Texture max size <16384>
[INFO ] [GL ] Texture max units <32>
[INFO ] [Window ] auto add sdl2 input provider
[INFO ] [Window ] virtual keyboard not allowed, single mode, not docked
[INFO ] [GL ] NPOT texture support is available
Traceback (most recent call last):
File "kivy\properties.pyx", line 861, in kivy.properties.ObservableDict.__getattr__
KeyError: 'subs_id'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:\Users\rahim\PycharmProjects\yt_filter\mian.py", line 90, in <module>
DemoApp().run()
File "C:\Users\rahim\PycharmProjects\yt_filter\venv\lib\site-packages\kivy\app.py", line 949, in run
self._run_prepare()
File "C:\Users\rahim\PycharmProjects\yt_filter\venv\lib\site-packages\kivy\app.py", line 944, in _run_prepare
self.dispatch('on_start')
File "kivy\_event.pyx", line 709, in kivy._event.EventDispatcher.dispatch
File "C:\Users\rahim\PycharmProjects\yt_filter\mian.py", line 86, in on_start
self.root.ids.subs_id.add_widget(item)
File "kivy\properties.pyx", line 864, in kivy.properties.ObservableDict.__getattr__
AttributeError: 'super' object has no attribute '__getattr__'
Process finished with exit code 1
YouTube 很有用，但算法会毁了你的生活，所以我想出了这个主意...
我的想法是，我只能访问我在应用程序中列出的频道中的视频，摆脱 YouTube 应用程序，告别邪恶的算法。
from kivymd.app import MDApp
from kivymd.uix.screen import Screen
from kivy.lang import Builder
from kivy.core.window import Window
from kivy.uix.screenmanager import ScreenManager
from kivymd.uix.list import OneLineListItem
Window.size = (300, 500)
screen_helper = """
ScreenManager:
HomeScreen:
SubscriptionScreen:
<HomeScreen>:
name: 'home'
BoxLayout:
orientation: 'vertical'
MDToolbar:
title: 'YouTube'
left_action_items: [["youtube", lambda x: app.navigation_draw()]]
right_action_items: [["magnify", lambda x: app.search_popup()]]
MDIconButton:
icon: "youtube-subscription"
md_bg_color: app.theme_cls.primary_color
pos_hint: {'center_x':0.5, 'center_y':0.5}
on_press: root.manager.current = "subscriptions"
MDLabel:
text: 'hello world'
halign: 'center'
MDRectangleFlatButton:
text:'profile'
pos_hint: {'center_x':0.5, 'center_y':0.5}
on_press: root.manager.current = "subscriptions"
<SubscriptionScreen>:
name: 'subscriptions'
BoxLayout:
orientation: 'vertical'
MDToolbar:
title: 'YouTube'
left_action_items: [["youtube", lambda x: app.navigation_draw()]]
right_action_items: [["magnify", lambda x: app.search_popup()]]
MDIconButton:
icon: "youtube-subscription"
md_bg_color: app.theme_cls.primary_color
pos_hint: {'center_x':0.5, 'center_y':0.5}
on_press: root.manager.current = "profile"
ScrollView:
MDList:
id: subs_id
"""
class HomeScreen(Screen):
pass
class SubscriptionScreen(Screen):
pass
sm = ScreenManager()
sm.add_widget(HomeScreen(name='home'))
subscription_screen = SubscriptionScreen(name='subscriptions')
sm.add_widget(subscription_screen)
sm.current = "home"
class DemoApp(MDApp):
def build(self):
self.theme_cls.primary_palette = 'Red'
screen = Builder.load_string(screen_helper)
return screen
def on_start(self):
print("this is my app", self)
print("this is the app widget visual", self.root)
print("this is the dictionnary containing all the id/widgets referenced on THE FIRST LVL of my app",
self.root.ids)
print("yes subs_id is not in because each widget can only see the id of the widgets declared on him.")
print("this is my screenManager", sm)
print("this is my subscription screen", subscription_screen)
DemoApp().run()