相关疑难解决方法(0)

我按照以下步骤在virtualenv(Mac OSX)中安装了kivy并支持sdl2

$ brew install sdl2 sdl2_image sdl2_ttf sdl2_mixer gstreamer
$ pip install -I Cython
$ USE_OSX_FRAMEWORKS=0 pip install kivy

但是当试图运行基本文档代码时

from kivy.app import App
from kivy.uix.gridlayout import GridLayout
from kivy.uix.label import Label
from kivy.uix.textinput import TextInput


class LoginScreen(GridLayout):

    def __init__(self, **kwargs):
        super(LoginScreen, self).__init__(**kwargs)
        self.cols = 2
        self.add_widget(Label(text='User Name'))
        self.username = TextInput(multiline=False)
        self.add_widget(self.username)
        self.add_widget(Label(text='password'))
        self.password = TextInput(password=True, multiline=False)
        self.add_widget(self.password)


class MyApp(App):

    def build(self):
        return LoginScreen()


if __name__ == '__main__':
    MyApp().run()

我收到了以下错误

[INFO              ] [Logger      ] Record log in /Users/manthansharma/.kivy/logs/kivy_16-08-25_68.txt
[INFO …