object.__init__() 不带参数

Question

所以我目前正在制作一个具有登录功能的应用程序以及其中具有菜单功能的主窗口。当我收到错误时，我遇到了代码问题：

File "C:\Users\Muna Abdullahi\AppData\Local\Programs\Python\Python37-32\lib\site-packages\kivy\uix\widget.py", line 350, in __init__ super(Widget, self).__init__(**kwargs) File "kivy\_event.pyx", line 243, in kivy._event.EventDispatcher.__init__ TypeError: object.__init__() takes no arguments

这是我的代码：

from kivy.app import App
from kivy.lang import Builder
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.properties import ObjectProperty
from kivy.uix.popup import Popup
from kivy.uix.label import Label
from kivy.core.window import Window
from database import DataBase
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.floatlayout import FloatLayout
from kivy.uix.widget import Widget
from kivy.config import Config

Window.clearcolor = (0.5294, 0, 0.3176, 0)

Config.set('kivy', 'keyboard_mode', 'systemandmulti')

class ForgotWindow(Screen):
    namee = ObjectProperty(None)
    email = ObjectProperty(None)

   def VerificationBtn(self):
       pass

   def loginBtn(self):
       sm.current = "login"

class CreateAccountWindow(Screen):
    namee = ObjectProperty(None)
    email = ObjectProperty(None)
    password = ObjectProperty(None)

    def submit(self):
        if self.namee.text != "" and self.email.text != "" and self.email.text.count("@") == 1 and self.email.text.count(".") > 0:
            if self.password != "":
                db.add_user(self.email.text, self.password.text, self.namee.text)

                self.reset()

                sm.current = "login"
           else:
               invalidForm()
       else:
           invalidForm()

   def login(self):
       self.reset()
       sm.current = "login"

   def reset(self):
       self.email.text = ""
       self.password.text = ""
       self.namee.text = ""

   def createBtn(self):
       self.reset()
       sm.current = "create"


class LoginWindow(Screen):
    email = ObjectProperty(None)
    password = ObjectProperty(None)

    def loginBtn(self):
        if db.validate(self.email.text, self.password.text):
            MainWindow.current = self.email.text
            self.reset()
            sm.current = "main"
        else:
            invalidLogin()

    def createBtn(self):
        self.reset()
        sm.current = "create"

    def forgot(self):
        self.reset()
        sm.current = "forgot"

    def reset(self):
        self.email.text = ""
        self.password.text = ""


class MainWindow(BoxLayout):
    pass

class Screen_One(Screen):
    pass

class Screen_Two(Screen):
    pass



class WindowManager(ScreenManager):
    pass


def invalidLogin():
    popup = Popup(title='Invalid Login',
                  content=Label(text='Invalid username or password.'),
                  size_hint=(None, None), size=(400, 400))
    popup.open()


def invalidForm():
    popup = Popup(title='Invalid Form',
                  content=Label(text='Please fill in all inputs with valid information.'),
                  size_hint=(None, None), size=(400, 400))

    popup.open()


kv = Builder.load_file("my.kv")

sm = WindowManager()
db = DataBase("users.txt")

screens = [LoginWindow(name="login"), 
CreateAccountWindow(name="create"),ForgotWindow(name="forgot"), 
MainWindow(name="main"), Screen_One(name="Screen_One"), 
Screen_Two(name="Screen_Two")]
for screen in screens:
    sm.add_widget(screen)

sm.current = "login"


class MyMainApp(App):
    def build(self):
        return sm

if __name__ == "__main__":
    MyMainApp().run() `

如果您也需要我的 kivy 文件，我可以将其发送过来。

有人可以帮我解决这个问题吗？我需要尽快修复代码，因为它是我学校项目的一部分。另外，如果有人能在 Kivy 方面帮助我，那将非常感谢。

Answer 1

您的MainWindow 类扩展了BoxLayout，但BoxLayout 不支持name 属性。您只需从 MainWindow 创建中删除 name 参数：

MainWindow(name="main")

应该是：

MainWindow()