Kivyを使い始める

Question

'pyforms'で失敗した後、私は 'kivy'で自分の手を試してみることにしました。

ちょうどthis example codeを実行しようとpip install kivy

経由でインストールされているが、私はこのエラーを取得します。私はそれが何を言おうとしているのか本当に理解していないので、どこから始めるべきか分かりません。 私はWindows 10上で、32ビットのpython3.4.4を実行しています。他の誰かがエラーを理解できますか？

[INFO ] [Logger  ] Record log in U:\.kivy\logs\kivy_17-12-15_1.txt 
[INFO ] [Kivy  ] v1.10.0 
[INFO ] [Python  ] v3.4.4 (v3.4.4:737efcadf5a6, Dec 20 2015, 19:28:18) [MSC v.1600 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:\Python34\lib\site-packages\kivy\core\__init__.py", line 59, in core_select_lib 
    fromlist=[modulename], level=0) 
    File "C:\Python34\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:\Python34\lib\site-packages\kivy\utils.py", line 496, in __get__ 
    retval = self.func(inst) 
    File "C:\Python34\lib\site-packages\kivy\metrics.py", line 174, in dpi 
    EventLoop.ensure_window() 
    File "C:\Python34\lib\site-packages\kivy\base.py", line 127, in ensure_window 
    sys.exit(1) 
SystemExit: 1 
[CRITICAL] [App   ] Unable to get a Window, abort. 

例コード：

from kivy.app import App 
from kivy.uix.label import Label 
from kivy.clock import Clock 
from kivy.graphics import Color, Rectangle 


class TestApp(App): 

    @staticmethod 
    def get_x(label, ref_x): 
     """ Return the x value of the ref/anchor relative to the canvas """ 
     return label.center_x - label.texture_size[0] * 0.5 + ref_x 

    @staticmethod 
    def get_y(label, ref_y): 
     """ Return the y value of the ref/anchor relative to the canvas """ 
     # Note the inversion of direction, as y values start at the top of 
     # the texture and increase downwards 
     return label.center_y + label.texture_size[1] * 0.5 - ref_y 

    def show_marks(self, label): 

     # Indicate the position of the anchors with a red top marker 
     for name, anc in label.anchors.items(): 
      with label.canvas: 
       Color(1, 0, 0) 
       Rectangle(pos=(self.get_x(label, anc[0]), 
           self.get_y(label, anc[1])), 
          size=(3, 3)) 

     # Draw a green surround around the refs. Note the sizes y inversion 
     for name, boxes in label.refs.items(): 
      for box in boxes: 
       with label.canvas: 
        Color(0, 1, 0, 0.25) 
        Rectangle(pos=(self.get_x(label, box[0]), 
            self.get_y(label, box[1])), 
           size=(box[2] - box[0], 
            box[1] - box[3])) 

    def build(self): 
     label = Label(
      text='[anchor=a]a\nChars [anchor=b]b\n[ref=myref]ref[/ref]', 
      markup=True) 
     Clock.schedule_once(lambda dt: self.show_marks(label), 1) 
     return label 

TestApp().run() 

Answer 1

Kivyサイト上installation guideに従ってください。また、依存関係をインストールする必要があります。

python -m pip install docutils pygments pypiwin32 kivy.deps.sdl2 kivy.deps.glew 
python -m pip install kivy.deps.gstreamer