1  import adafruit_pypixelbuf
 2  
 3  
 4  class TestBuf(adafruit_pypixelbuf.PixelBuf):
 5      called = False
 6  
 7      def show(self):
 8          self.called = True
 9  
10  
11  buffer = TestBuf(20, bytearray(20 * 3), "RGB", 1.0, auto_write=True)
12  buffer[0] = (1, 2, 3)
13  
14  print(buffer[0])
15  print(buffer[0:2])
16  print(buffer[0:2:2])
17  print(buffer.called)