使用 KIVY 集体卡在加载窗口答案

【问题标题】：Stuck in loading window collectively using KIVY使用 KIVY 集体卡在加载窗口
【发布时间】：2021-01-13 20:54:26
【问题描述】：

我正在学习使用 Python 和 Kivy 的 POS 教程，但我遇到了这个似乎消失并不断重现的错误。我有一个 main.py 文件，我尝试在其中加载一个引发属性错误的窗口 admin.py

  File "C:/Users/John/PycharmProjects/FirstKivyApplication/main.py", line 3, in <module>
     from Admin.admin import AdminWindow
   File "C:\Users\John\PycharmProjects\FirstKivyApplication\Admin\admin.py", line 22, in <module>
     Builder.load_file('Admin/admin.kv')
   File "C:\Users\John\PycharmProjects\FirstKivyApplication\lib\site-packages\kivy\lang\builder.py", line 301, in load_file
     return self.load_string(data, **kwargs)
   File "C:\Users\John\PycharmProjects\FirstKivyApplication\lib\site-packages\kivy\lang\builder.py", line 399, in load_string
     widget = Factory.get(parser.root.name)(__no_builder=True)
   File "C:\Users\John\PycharmProjects\FirstKivyApplication\lib\site-packages\kivy\factory.py", line 130, in __getattr__
     raise AttributeError
 AttributeError

MAIN.PY

from kivy.app import App
from kivy.uix.boxlayout import BoxLayout
from Admin.admin import AdminWindow
from Signin.signin import SignInWindow
from Operator.theoperator import OperatorWindow

class MainWindow(BoxLayout):

   admin_widget = AdminWindow() #An instance of our Admin wdindow
   signin_widget = SignInWindow() # An instance of our sign in window
   operator_widget = OperatorWindow() # An instance of our Operator window

def __init__(self, **kwargs):
    super().__init__(**kwargs)

    self.ids.scrn_si.add_widget(self.signin_widget)
    self.ids.scrn_admin.add_widget(self.admin_widget)
    self.ids.scrn_op.add_widget(self.operator_widget)


class MainApp(App):
    def build(self):
        return MainWindow()


if __name__ == "__main__":
    sa = MainApp()
    sa.run()

管理员.PY

from kivy.uix.modalview import ModalView
from kivy.lang import Builder

Builder.load_file('Admin/admin.kv')

class Notify(ModalView):
    def __init__(self, **kwargs):
        super().__init__(**kwargs)

        self.size_hint = (.3, .3)


class AdminWindow(BoxLayout):
    def __init__(self, **kwargs):
        super().__init__(**kwargs)


    def logout(self):
        self.parent.parent.current = 'scrn_si'

class AdminApp(App):
    def build(self):
        return AdminWindow()


if __name__ == '__main__':
    AdminApp().run()

这是我的项目结构：

【问题讨论】：

标签： python pycharm kivy attributeerror builder

【解决方案1】：

我在相关的 kv 文件中忘记了下面的这句话。

#: import Window kivy.core.window.Window

【讨论】：