I am trying to make a simple app made from Kivy on Windows:
import kivy
from kivy.app import App
from kivy.uix.label import Label
class MyApp(App):
def build(self):
return Label(text='Hello world')
if __name__ == '__main__':
MyApp().run()
(EDIT) But each time I get this very long error; this is all of it:
[INFO ] [Logger ] Record log in C:\Users\danie\.kivy\logs\kivy_16-07-15_5.txt
[INFO ] [Kivy ] v1.9.1
[INFO ] [Python ] v3.4.4 (v3.4.4:737efcadf5a6, Dec 20 2015, 20:20:57) [MSC v.1600 64 bit (AMD64)]
[INFO ] [Factory ] 179 symbols loaded
[INFO ] [Image ] Providers: img_tex, img_dds, img_gif, img_sdl2, img_pil (img_ffpyplayer ignored)
[INFO ] [Text ] Provider: sdl2
[INFO ] [OSC ] using <thread> for socket
[INFO ] [Window ] Provider: sdl2
[INFO ] [GL ] GLEW initialization succeeded
[INFO ] [GL ] OpenGL version <b'4.4.0 - Build 10.18.15.4271'>
[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 10.18.15.4271'>
[INFO ] [GL ] Texture max size <16384>
[INFO ] [GL ] Texture max units <32>
[INFO ] [Shader ] fragment shader: <b"WARNING: 0:6: '' : #version directive missing">
[INFO ] [Shader ] vertex shader: <b"WARNING: 0:6: '' : #version directive missing">
[WARNING ] [Image ] Unable to load image <C:\Python34\lib\site-packages\kivy\data\glsl\default.png>
[CRITICAL ] [Window ] Unable to find any valuable Window provider at all!
sdl2 - Exception: SDL2: Unable to load image
File "C:\Python34\lib\site-packages\kivy\core\__init__.py", line 67, in core_select_lib
cls = cls()
File "C:\Python34\lib\site-packages\kivy\core\window\window_sdl2.py", line 138, in __init__
super(WindowSDL, self).__init__()
File "C:\Python34\lib\site-packages\kivy\core\window\__init__.py", line 722, in __init__
self.create_window()
File "C:\Python34\lib\site-packages\kivy\core\window\window_sdl2.py", line 255, in create_window
super(WindowSDL, self).create_window()
File "C:\Python34\lib\site-packages\kivy\core\window\__init__.py", line 897, in create_window
self.render_context = RenderContext()
File "kivy\graphics\instructions.pyx", line 756, in kivy.graphics.instructions.RenderContext.__init__ (kivy\graphics\instructions.c:10729)
File "C:\Python34\lib\site-packages\kivy\core\image\__init__.py", line 512, in __init__
self.filename = arg
File "C:\Python34\lib\site-packages\kivy\core\image\__init__.py", line 700, in _set_filename
mipmap=self._mipmap, nocache=self._nocache)
File "C:\Python34\lib\site-packages\kivy\core\image\__init__.py", line 430, in load
im = loader(filename, **kwargs)
File "C:\Python34\lib\site-packages\kivy\core\image\__init__.py", line 198, in __init__
self._data = self.load(filename)
File "C:\Python34\lib\site-packages\kivy\core\image\img_sdl2.py", line 42, in load
raise Exception('SDL2: Unable to load image')
[CRITICAL ] [App ] Unable to get a Window, abort.
Exception ignored in: 'kivy.properties.dpi2px'
Traceback (most recent call last):
File "C:\Python34\lib\site-packages\kivy\utils.py", line 513, in __get__
retval = self.func(inst)
File "C:\Python34\lib\site-packages\kivy\metrics.py", line 175, in dpi
EventLoop.ensure_window()
File "C:\Python34\lib\site-packages\kivy\base.py", line 126, in ensure_window
sys.exit(1)
SystemExit: 1
[CRITICAL ] [App ] Unable to get a Window, abort.
I can't understand why this error is appearing, can you help me out of this?
Though the installation instructions say gstreamer is optional I had to install it to get kivy to work (windows). As on the installation page:
python -m pip install kivy.deps.gstreamer --extra-index-url https://kivy.org/downloads/packages/simple/
(uninstalling reproduced the error above, installing it again fixed it again)