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帮我 !!

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尝试使用 python 和 kivymd 开发 android 应用程序..
谁能帮我解决以下代码文件中的错误
代码--
从 kivy.animation 导入动画
从 kivy.clock 导入时钟
从 kivymd.app 导入 mdapp
从 kivy.uix.image 导入图像
从 kivymd.uix.screenmanager 导入 screenmanager
从 kivy.uix.screenmanager 导入 screen

...(其他进口和类别)

类 splashscreen(屏幕):

def on_enter(self):
    self.animate_logo()
    clock.schedule_once(self.transition_to_main_screen, 3)  # adjust transition time as needed

def animate_logo(self):
    logo_image = self.logo_image
    if logo_image:
        anim = animation(size_hint_x=1.2, duration=0.5)
        anim.bind(on_complete=self.animate_logo_back)
        anim.start(logo_image)

def animate_logo_back(self, *args):
    logo_image = self.logo_image
    if logo_image:
        anim = animation(size_hint_x=1, duration=0.5)
        anim.start(logo_image)

def transition_to_main_screen(self, dt):
    self.manager.current = 'main_screen'  # replace 'main_screen' with your main screen name

...(其他进口和类别)

类主屏幕(屏幕):
# ...(其他屏幕逻辑)

def login(self):
    # implement your login logic here
    username = self.ids.username_field.text
    password = self.ids.password_field.text
    # ... (check credentials, navigate to appropriate screen)

def show_signup_screen(self):
    self.manager.current = 'signup_screen'  # replace with your signup screen name

...(mainapp 的其余部分和其他类)

类mainapp(mdapp):
# ...(其他应用逻辑)

def build(self):
    sm = ScreenManager()
    sm.add_widget(SplashScreen(name='splash_screen'))
    sm.add_widget(MainScreen(name='main_screen'))  # Add your main screen
    sm.current = 'splash_screen'
    return sm

if 名称 == 'main':
mainapp().run() # 确保应用程序仅在作为脚本执行时运行

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