Das deutsche Python-Forum

Code: Alles auswählen

class SecondScreen(Screen):
    def __init__(self, **kwargs):
        super(SecondScreen, self).__init__(**kwargs)


    def write(self):
        user_input = str(self.ids.input1.text)
        communication.write(user_input)
        self.label1.text = user_input   # Hier funktioniert das


    def receive(self, server_input):
        print(server_input)
        self.label1.text = "Hello world"  # Hier funktioniert das nicht

Code: Alles auswählen

 Traceback (most recent call last):
   File "C:\Program Files\Python310\lib\threading.py", line 1016, in _bootstrap_inner
     self.run()
   File "C:\Program Files\Python310\lib\threading.py", line 953, in run
     self._target(*self._args, **self._kwargs)
   File "C:\Users\dmd__\Documents\Programmierung\PyCharm\GPS-App\gps_client.py", line 39, in receive
     self.second.receive(message)
   File "C:\Users\dmd__\Documents\Programmierung\PyCharm\GPS-App\gps_client.py", line 87, in receive
     self.label1.text = "Hello world"  # Hier funktioniert das nicht
 AttributeError: 'NoneType' object has no attribute 'text'