QPython error: 'Needs more than one value to unpack'

Question

我开始使用 Qpython 和 kivy 在 Android 上编程。但是每次我运行这段代码，我都觉得我需要不止一个值来解包。我做错了什么？这是代码：

from kivy.app import App
from kivy.uix.widget import Widget
from kivy.graphics import Color, Ellipse, Line


class MyPaintWidget(Widget):

    def on_touch_down(self, touch):
        with self.canvas:
            Color(1, 1, 0)
            d = 30.
            Ellipse(pos=(touch.x - d / 2, touch.y - d / 2), size=(d, d))
            touch.ud['line'] = Line(points=(touch.x, touch.y))

    def on_touch_move(self, touch):
        touch.ud['line'].points += [touch.x, touch.y]


class MyPaintApp(App):

    def build(self):
        return MyPaintWidget()


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

Answer 1

我可以运行在最新版本的 qpython (1.0.4)

我在脚本中插入了“#qpy:kivy”，让它运行使用kivy模式。

QPython error: 'Needs more than one value to unpack'

QPython error: 'Needs more than one value to unpack'

android

unpack

qpython