Kivy不工作（错误：找不到任何有价值的窗口提供程序。）

Question

我一直收到这个错误：找不到任何有价值的窗口提供程序。 kivy的“完全”错误如下：

[INFO   ] [Logger      ] Record log in C:\Users\Victor\.kivy\logs\kivy_17-
05-27_10.txt
[INFO   ] [Kivy        ] v1.10.0
[INFO   ] [Python      ] v3.6.1 (v3.6.1:69c0db5, Mar 21 2017, 17:54:52) [MSC 
v.1900 32 bit (Intel)]
[INFO   ] [Factory     ] 194 symbols loaded
[INFO   ] [Image       ] Providers: img_tex, img_dds, img_pil, img_gif 
(img_sdl2, img_ffpyplayer ignored)
[INFO   ] [Text        ] Provider: pil(['text_sdl2'] ignored)
[CRITICAL] [Window      ] Unable to find any valuable Window provider.
sdl2 - ImportError: DLL load failed: The specified module could not be 
found.
File "C:\Users\Victor\Desktop\lib\site-packages\kivy\core\__init__.py", line 
59, in core_select_lib
fromlist=[modulename], level=0)
File "C:\Users\Victor\Desktop\lib\site-
packages\kivy\core\window\window_sdl2.py", line 26, in <module>
from kivy.core.window._window_sdl2 import _WindowSDL2Storage

[CRITICAL] [App         ] Unable to get a Window, abort.
Exception ignored in: 'kivy.properties.dpi2px'
Traceback (most recent call last):
File "C:\Users\Victor\Desktop\lib\site-packages\kivy\utils.py", line 496, in __get__
 retval = self.func(inst)
 File "C:\Users\Victor\Desktop\lib\site-packages\kivy\metrics.py", line 174, in dpi
 EventLoop.ensure_window()
 File "C:\Users\Victor\Desktop\lib\site-packages\kivy\base.py", line 127, in ensure_window
 sys.exit(1)
 SystemExit: 1
[CRITICAL] [App         ] Unable to get a Window, abort.

这就是错误，这里是代码：

import kivy #added this just in case
from kivy.app import App
from kivy.uix.label import Label


class SimpleKivy(App):
    def build(self):
       return Label(text="Hello World!!!")

if __name__ == "__main__":
   SimpleKivy().run()

有人能解释一下这个错误吗

Answer 1

你可能缺少一些依赖关系。从docs：

Install the dependencies (skip gstreamer (~120MB) if not needed, see Kivy’s dependencies):

python -m pip install docutils pygments pypiwin32 kivy.deps.sdl2kivy.deps.glew; python -m pip install kivy.deps.gstreamer

Answer 2

上面的解决方案对我不起作用。下面是我在安装了Anaconda Python 3.6的Windows 10 pc上解决问题所必须做的：

• 以管理员身份打开Anaconda提示窗口
• pip卸载kivy
• pip安装kivy
• pip安装docutils pygments pypiwin32 kivy.deps.sdl2
• pip安装kivy.deps.glew

Answer 3

就连我也面临同样的问题。

现在它正在使用conda安装

conda config --add channels conda-forge
conda install kivy