Kivy问题-无法获取窗口，中止

Question

问题：

我尝试为我的python 3.9项目第一次运行kivy，但我得到了以下错误：

Python : 3.9

操作系统: Windows 10

安装方法：

python -m pip install --upgrade pip wheel setuptools
python -m pip install docutils pygments pypiwin32 kivy.deps.sdl2 kivy.deps.glew
python -m pip install kivy.deps.gstreamer
python -m pip install kivy.deps.angle
python -m pip install kivy

错误：

Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.

[INFO ] [Logger ] Record log in C:\Users\User.kivy\logs\kivy_21-09-18_23.txt
[INFO ] [deps ] Successfully imported "kivy_deps.gstreamer" 0.3.2
[INFO ] [deps ] Successfully imported "kivy_deps.angle" 0.3.0
[INFO ] [deps ] Successfully imported "kivy_deps.glew" 0.3.0
[INFO ] [deps ] Successfully imported "kivy_deps.sdl2" 0.3.1
[INFO ] [Kivy ] v2.0.0
[INFO ] [Kivy ] Installed at "C:\Users\User\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\kivy_init_.py"
[INFO ] [Python ] v3.9.7 (tags/v3.9.7:1016ef3, Aug 30 2021, 20:19:38) [MSC v.1929 64 bit (AMD64)]
[INFO ] [Python ] Interpreter at "C:\Users\User\AppData\Local\Microsoft\WindowsApps\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\python.exe"
[INFO ] [Factory ] 186 symbols loaded
[INFO ] [Image ] Providers: img_tex, img_dds (img_sdl2, img_pil, img_ffpyplayer ignored)
[CRITICAL] [Window ] Unable to find any valuable Window provider. Please enable debug logging (e.g. add -d if running from the command line, or change the log level in the config) and re-run your app to identify potential causes
sdl2 - ImportError: DLL load failed while importing window_sdl2: The specified module could not be found.
File "C:\Users\User\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\kivy\core_init.py", line 58, in core_select_lib
mod = import(name='{2}.{0}.{1}'.format(
File "C:\Users\User\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\kivy\core\window\window_sdl2.py", line 27, in
from kivy.core.window._window_sdl2 import _WindowSDL2Storage

[CRITICAL] [App ] Unable to get a Window, abort.

代码：

from kivy.app import App

class TheLabApp(App):
   pass

TheLabApp().run()

Answer 1

好了，我已经修复了它：

我不知道它是如何工作的，但我刚刚重新安装了python 3.9和kivy 2.0.0，然后它就工作了

卸载kivy的代码：

python -m pip unisntall kivy
python -m pip uninstall kivy.deps.angle
python -m pip uninstall kivy.deps.sdl2
python -m pip uninstall kivy.deps.glew
python -m pip uninstall kivy.deps.gstreamer

重新安装它的代码：

pip install kivy
pip install kivy.deps.angle
pip install kivy.deps.sdl2
pip install kivy.deps.glew
pip install kivy.deps.gstreamer