我正在與 Kivy 一起開發日歷程序。我的問題出在 print_appointment_to_label 函數中。我在函數末尾寫了appointment_label.text =appointment_name_file_content，但標簽僅在我重新啟動程序時才更新。如果您想知道 label_id_file_content 代表“1jal”，即標簽 id。謝謝你的幫助朱利葉斯Python：# diable multitouchfrom kivy.config import ConfigConfig.set('input', 'mouse', 'mouse,multitouch_on_demand')from kivy.app import Appfrom kivy.uix.screenmanager import Screen,ScreenManagerfrom kivy.lang.builder import Builderfrom kivy.uix.popup import Popupfrom kivy.uix.floatlayout import FloatLayoutfrom kivy.clock import Clockclass screenmanager(ScreenManager):    passclass PopupContent(FloatLayout):    def store_appointment_name(self):        appointment_name = self.ids.appointment_name.text        with open("appointment_name_file","w") as appointment_name_file:            appointment_name_file.write(appointment_name)        with open("label_id_file","r") as label_id_file:            label_id_file_content = label_id_file.read()        #check month        if "ja" in label_id_file_content:            Ja = JanuaryWindow()            Ja.__init__()class MonthWindow(Screen):    passclass JanuaryWindow(Screen):    def __init__(self, **kwargs):        super(JanuaryWindow, self).__init__(**kwargs)        Clock.schedule_once(self.print_appointment_to_label)    def print_appointment_to_label(self,dt):        with open("appointment_name_file", "r") as appointment_name_file:            appointment_name_file_content = appointment_name_file.read()        with open("label_id_file", "r") as label_id_file:            label_id_file_content = label_id_file.read()        appointment_label = self.ids[label_id_file_content]        appointment_label.text = appointment_name_file_content