Question

我正在尝试按照PongBall

上的kivy教程

，但VScode在行中给出了错误

from kivy.properties import NumericProperty, ReferenceListProperty

带有消息：

[pylint] E0611：模块'kivy.properties'中没有名称'NumericProperty'

[pylint] E0611：模块'kivy.properties'中没有名称'ReferenceListProperty'

这个模块我相信cython模块，当我打开文件properties.pxd时我可以找到以下代码：

...
cdef class NumericProperty(Property):
    cdef float parse_str(self, EventDispatcher obj, value)
    cdef float parse_list(self, EventDispatcher obj, value, ext)
...
cdef class ReferenceListProperty(Property):
    cdef list properties
    cpdef trigger_change(self, EventDispatcher obj, value)
    cpdef setitem(self, EventDispatcher obj, key, value)
...

附录：这是我到目前为止的整个代码：

import kivy
kivy.require('1.10.0')

from kivy.app import App
from kivy.uix.widget import Widget
from kivy.uix.button import Button
from kivy.uix.boxlayout import BoxLayout
from kivy.properties import NumericProperty, ReferenceListProperty
from kivy.vector import Vector

class PongGame(Widget):
    pass

class PongBall(Widget):
    # velocity of the ball on x and y axis
    velocity_x = NumericProperty(0)
    velocity_y = NumericProperty(0)

    velocity = ReferenceListProperty(velocity_x, velocity_y)

    def move(self):
        self.pos = Vector(*self.velocity) + self.pos
class PongApp(App):
    def build(self):
        return PongGame()


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

问题：为什么它不想导入，我该怎么做才能修复它？

无法从cython模块导入类

0 个答案: