从kv到py导入d的kivy文本输入

Question

我试图从kv文件中的一个简单textinput获取数据，并使用python文件中的信息。 但我总是犯同样的错误。 当我按下一个按钮，尝试运行的函数看起来像是试图从文本位置小部件获取信息时，就会发生此错误 提前谢谢你。在

class ScatterTextWidget(BoxLayout):


    def initialize_request(self):
         ''' Initial analysis and control flow of the class '''

         location = self.ids.input_location
         date = S.ids.input_date
         time_raw = ScatterTextWidget.ids.input_time
         print(f'{location} - {date} - {time_raw}')

class HistoricalApp(App):
     def build(self):
         return ScatterTextWidget()

if __name__ == "__main__":

    HistoricalApp().run()

kivy文件名为“历史千伏" 我减少是因为它有点长

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我收到的错误是

File "kivy\properties.pyx", line 838, in 
 kivy.properties.ObservableDict.__getattr__
 KeyError: 'text_location'

 During handling of the above exception, another exception occurred:

 Traceback (most recent call last):
   File "C:/Users/IBKCo/Desktop/Git Programs/TimeStationHistoricalRecords/MainGui.py", line 77, in <module>
     HistoricalApp().run()
   File "C:\Users\IBKCo\Desktop\Git Programs\TimeStationHistoricalRecords\pdEnv\lib\site-packages\kivy\app.py", line 826, in run
     runTouchApp()
   File "C:\Users\IBKCo\Desktop\Git Programs\TimeStationHistoricalRecords\pdEnv\lib\site-packages\kivy\base.py", line 502, in runTouchApp
     EventLoop.window.mainloop()
   File "C:\Users\IBKCo\Desktop\Git Programs\TimeStationHistoricalRecords\pdEnv\lib\site-packages\kivy\core\window\window_sdl2.py", line 727, in mainloop
     self._mainloop()
   File "C:\Users\IBKCo\Desktop\Git Programs\TimeStationHistoricalRecords\pdEnv\lib\site-packages\kivy\core\window\window_sdl2.py", line 460, in _mainloop
     EventLoop.idle()
   File "C:\Users\IBKCo\Desktop\Git Programs\TimeStationHistoricalRecords\pdEnv\lib\site-packages\kivy\base.py", line 340, in idle
     self.dispatch_input()
   File "C:\Users\IBKCo\Desktop\Git Programs\TimeStationHistoricalRecords\pdEnv\lib\site-packages\kivy\base.py", line 325, in dispatch_input
     post_dispatch_input(*pop(0))
   File "C:\Users\IBKCo\Desktop\Git Programs\TimeStationHistoricalRecords\pdEnv\lib\site-packages\kivy\base.py", line 291, in post_dispatch_input
     wid.dispatch('on_touch_up', me)
   File "kivy\_event.pyx", line 707, in kivy._event.EventDispatcher.dispatch
   File "C:\Users\IBKCo\Desktop\Git Programs\TimeStationHistoricalRecords\pdEnv\lib\site-packages\kivy\uix\behaviors\button.py", line 179, in on_touch_up
     self.dispatch('on_release')
   File "kivy\_event.pyx", line 703, in kivy._event.EventDispatcher.dispatch
   File "kivy\_event.pyx", line 1214, in kivy._event.EventObservers.dispatch
   File "kivy\_event.pyx", line 1098, in kivy._event.EventObservers._dispatch
   File "C:\Users\IBKCo\Desktop\Git Programs\TimeStationHistoricalRecords\pdEnv\lib\site-packages\kivy\lang\builder.py", line 64, in custom_callback
     exec(__kvlang__.co_value, idmap)
   File "C:\Users\IBKCo\Desktop\Git Programs\TimeStationHistoricalRecords\historical.kv", line 127, in <module>
     on_release: root.initialize_request()
   File "C:/Users/IBKCo/Desktop/Git Programs/TimeStationHistoricalRecords/MainGui.py", line 31, in initialize_request
     location = self.ids.text_location
   File "kivy\properties.pyx", line 841, in kivy.properties.ObservableDict.__getattr__
 AttributeError: 'super' object has no attribute '__getattr__'

提前谢谢你 最好的

Answer 1

首先，您需要删除id:input1行和id:input2行。然后将initialize_request方法更改为：

def initialize_request(self):
     ''' Initial analysis and control flow of the class '''

     location = self.ids.text_location.text
     date = self.ids.input_date.text
     time_raw = self.ids.input_time.text
     print(f'{location} - {date} - {time_raw}')

注意，self.ids.text_location是对TextInput小部件的引用，因此您必须添加.text以获取其文本。其他TextInput小部件也是如此。在