kivy sdl2 - ImportError: DLL load failed: 找不到指定的模块

from kivy.app import App
from kivy.uix.button import Button

class TestApp(App):
    def build(self):
        return Button(text="Hello,kivy")
TestApp().run()

输出结果：

[INFO   ] [Logger      ] Record log in C:\Users\usth1\.kivy\logs\kivy_17-06-09_17.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: 找不到指定的模块。
  File "C:\Users\usth1\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\core\__init__.py", line 59, in core_select_lib
    fromlist=[modulename], level=0)
  File "C:\Users\usth1\AppData\Local\Programs\Python\Python36-32\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\usth1\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\utils.py", line 496, in __get__
     retval = self.func(inst)
   File "C:\Users\usth1\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\metrics.py", line 174, in dpi
     EventLoop.ensure_window()
   File "C:\Users\usth1\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\base.py", line 127, in ensure_window
     sys.exit(1)
 SystemExit: 1
[CRITICAL] [App         ] Unable to get a Window, abort.

------------------
(program exited with code: 1)

请按任意键继续. . .

接着我在GitHub上查询了相关文档：

https://github.com/kivy/kivy/issues/3889
下载了kivy.deps.sdl2：
C:\Users\usth1>pip install kivy.deps.sdl2

输出结果：

[INFO   ] [Logger      ] Record log in C:\Users\usth1\.kivy\logs\kivy_17-06-09_16.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_sdl2, img_pil, img_gif (img_ffpyplayer ignored)
[INFO   ] [Text        ] Provider: sdl2
[INFO   ] [OSC         ] using <thread> for socket
[INFO   ] [Window      ] Provider: sdl2
[CRITICAL] [Window      ] Unable to find any valuable Window provider.
sdl2 - ImportError: DLL load failed: 找不到指定的模块。
  File "C:\Users\usth1\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\core\__init__.py", line 67, in core_select_lib
    cls = cls()
  File "C:\Users\usth1\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\core\window\window_sdl2.py", line 140, in __init__
    super(WindowSDL, self).__init__()
  File "C:\Users\usth1\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\core\window\__init__.py", line 899, in __init__
    self.create_window()
  File "C:\Users\usth1\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\core\window\window_sdl2.py", line 269, in create_window
    self.fullscreen, resizable, state)
  File "kivy\core\window\_window_sdl2.pyx", line 110, in kivy.core.window._window_sdl2._WindowSDL2Storage.setup_window (kivy\core/window\_window_sdl2.c:2466)
  File "kivy\graphics\cgl.pyx", line 52, in kivy.graphics.cgl.cgl_get_backend_name (kivy\graphics\cgl.c:3044)
  File "kivy\graphics\cgl.pyx", line 60, in kivy.graphics.cgl.cgl_get_backend_name (kivy\graphics\cgl.c:2879)
  File "C:\Users\usth1\AppData\Local\Programs\Python\Python36-32\lib\importlib\__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 978, in _gcd_import
  File "<frozen importlib._bootstrap>", line 961, in _find_and_load
  File "<frozen importlib._bootstrap>", line 950, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 648, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 560, in module_from_spec
  File "<frozen importlib._bootstrap_external>", line 922, in create_module
  File "<frozen importlib._bootstrap>", line 205, in _call_with_frames_removed

[CRITICAL] [App         ] Unable to get a Window, abort.
 Exception ignored in: 'kivy.properties.dpi2px'
 Traceback (most recent call last):
   File "C:\Users\usth1\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\utils.py", line 496, in __get__
     retval = self.func(inst)
   File "C:\Users\usth1\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\metrics.py", line 174, in dpi
     EventLoop.ensure_window()
   File "C:\Users\usth1\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\base.py", line 127, in ensure_window
     sys.exit(1)
 SystemExit: 1
[CRITICAL] [App         ] Unable to get a Window, abort.

------------------
(program exited with code: 1)

请按任意键继续. . .

还是有错误，接下来在stackoverflow上查询文档:
https://stackoverflow.com/questions/40769386/kivy-windows-unable-to-find-any-valuable-window-provider-at-all
下载python -m pip install docutils pygments pypiwin32 kivy.deps.sdl2 kivy.deps.glew
运行结果：

Purge log fired. Analysing...
Purge finished!
[INFO   ] [Logger      ] Record log in C:\Users\usth1\.kivy\logs\kivy_17-06-09_19.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_sdl2, img_pil, img_gif (img_ffpyplayer ignored)
[INFO   ] [Text        ] Provider: sdl2
[INFO   ] [OSC         ] using <thread> for socket
[INFO   ] [Window      ] Provider: sdl2
[INFO   ] [GL          ] Using the "OpenGL" graphics system
[INFO   ] [GL          ] GLEW initialization succeeded
[INFO   ] [GL          ] Backend used <glew>
[INFO   ] [GL          ] OpenGL version <b'4.4.0 - Build 21.20.16.4627'>
[INFO   ] [GL          ] OpenGL vendor <b'Intel'>
[INFO   ] [GL          ] OpenGL renderer <b'Intel(R) HD Graphics 530'>
[INFO   ] [GL          ] OpenGL parsed version: 4, 4
[INFO   ] [GL          ] Shading version <b'4.40 - Build 21.20.16.4627'>
[INFO   ] [GL          ] Texture max size <16384>
[INFO   ] [GL          ] Texture max units <32>
[INFO   ] [Shader      ] fragment shader: <b"WARNING: 0:7: '' :  #version directive missing">
[INFO   ] [Shader      ] vertex shader: <b"WARNING: 0:7: '' :  #version directive missing">
[INFO   ] [Window      ] auto add sdl2 input provider
[INFO   ] [Window      ] virtual keyboard not allowed, single mode, not docked
[INFO   ] [Base        ] Start application main loop
[INFO   ] [GL          ] NPOT texture support is available

成功！
---------------------
作者：魏连新
来源：CSDN
原文：https://blog.csdn.net/qq_36751365/article/details/72955956
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