为什么 kivy 无法导入 kivy_clock？

Question

https:/kivy.orgdocstableapi-kivy.app.html。

import kivy

kivy.require('1.0.7')

from kivy.app import App

from kivy.uix.button import Button


class TestApp(App):

def build(self):
    # return a Button() as a root widget
    return Button(text='hello world')


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

根据以上代码，我有以下错误

[INFO   ] [Logger      ] Record log in C:\Users\USER\.kivy\logs\kivy_20-05-09_45.txt
[INFO   ] [deps        ] Successfully imported "kivy_deps.angle" 0.1.10
[INFO   ] [Kivy        ] v1.11.1
[INFO   ] [Kivy        ] Installed at "C:\Users\USER\AppData\Local\Programs\Python\Python38-32\lib\site-packages\kivy\__init__.py"
[INFO   ] [Python      ] v3.8.1 (tags/v3.8.1:1b293b6, Dec 18 2019, 22:39:24) [MSC v.1916 32 bit (Intel)]
[INFO   ] [Python      ] Interpreter at "C:\Users\USER\AppData\Local\Programs\Python\Python38-32\python.exe"
[ERROR  ] [Clock       ] Unable to import kivy._clock. Have you perhaps forgotten to compile kivy? Kivy contains Cython code which needs to be compiled. A missing kivy._clock often indicates the Cython code has not been compiled. Please follow the installation instructions and make sure to compile Kivy
 Traceback (most recent call last):
   File "C:/Users/USER/PycharmProjects/Hello world/pop.py", line 4, in <module>
     from kivy.app import App
   File "C:\Users\USER\AppData\Local\Programs\Python\Python38-32\lib\site-packages\kivy\app.py", line 319, in <module>
     from kivy.base import runTouchApp, stopTouchApp
   File "C:\Users\USER\AppData\Local\Programs\Python\Python38-32\lib\site-packages\kivy\base.py", line 26, in <module>
     from kivy.clock import Clock
   File "C:\Users\USER\AppData\Local\Programs\Python\Python38-32\lib\site-packages\kivy\clock.py", line 363, in <module>
     from kivy._clock import CyClockBase, ClockEvent, FreeClockEvent, \
 ModuleNotFoundError: No module named 'kivy._clock'

我觉得kivy_clock和Cython有问题。

Answer 1

因为无论你如何安装Kivy，你都没有编译它或者安装一个预编译的版本。

你是否遵循了kivy.org的说明？