old_contents: import math
  import time
  
  from gadget import GadgetBase, IndicatorStatus, BackgroundStatus
  from dothat import lcd
  from dothat import backlight
  
  
  class DotHatGadget(GadgetBase):
      NUM_COLS = 16
      NUM_ROWS = 3
  
      MIN_LED_BRIGHTNESS = 0
      MAX_LED_BRIGHTNESS = 255
  
      NUM_LEDS = 6
      ANIM_INTERVAL_SECONDS = 0.01
  
      def __init__(self):
          super(DotHatGadget, self).__init__()
  
      def display_boot_animation(self, anim_time=10.0):
          elapsed_time = 0.0
          x = 0
          while True:
              if elapsed_time >= anim_time:
                  break
              x += 1
              backlight.sweep((x % 360) / 360.0)
              time.sleep(DotHatGadget.ANIM_INTERVAL_SECONDS)
              elapsed_time += DotHatGadget.ANIM_INTERVAL_SECONDS
          self.clear_indicators()
          self.set_background_status(BackgroundStatus.Info)
  
  
      def set_status_lines(self, lines):
          lcd.clear()
          for i in range(min(len(lines), DotHatGadget.NUM_ROWS)):
              lcd.set_cursor_position(0, i)
              lcd.write(lines[i][:DotHatGadget.NUM_COLS])
  
      def set_indicator(self, i, status):
          if status == IndicatorStatus.On:
              backlight.graph_set_led_state(i, 1)
          else:
              backlight.graph_set_led_state(i, 0)
  
      def clear_indicators(self):
          backlight.graph_off()
  
      def set_background_status(self, status):
          if status == BackgroundStatus.Ok:
              backlight.rgb(0, 255, 0)
          elif status == BackgroundStatus.Error:
              backlight.rgb(255, 0, 0)
          elif status == BackgroundStatus.Warn:
              backlight.rgb(255, 255, 0)
          else:
              backlight.rgb(0, 0, 255)
  
new_contents: import math
  import time
  
  from gadget import GadgetBase, IndicatorStatus, BackgroundStatus
  from dothat import lcd
  from dothat import backlight
  
  
  class DotHatGadget(GadgetBase):
      NUM_COLS = 16
      NUM_ROWS = 3
  
      MIN_LED_BRIGHTNESS = 0
      MAX_LED_BRIGHTNESS = 255
  
      NUM_LEDS = 6
      ANIM_INTERVAL_SECONDS = 0.01
  
      def __init__(self):
          super(DotHatGadget, self).__init__()
  
      def display_boot_animation(self, anim_time=10.0):
          self.clear_indicators()
          elapsed_time = 0.0
          x = 0
          while True:
              if elapsed_time >= anim_time:
                  break
              x += 1
              backlight.sweep((x % 360) / 360.0)
              time.sleep(DotHatGadget.ANIM_INTERVAL_SECONDS)
              elapsed_time += DotHatGadget.ANIM_INTERVAL_SECONDS
          self.set_background_status(BackgroundStatus.Info)
  
      def set_status_lines(self, lines):
          lcd.clear()
          for i in range(min(len(lines), DotHatGadget.NUM_ROWS)):
              lcd.set_cursor_position(0, i)
              lcd.write(lines[i][:DotHatGadget.NUM_COLS])
  
      def set_indicator(self, i, status):
          if status == IndicatorStatus.On:
              backlight.graph_set_led_state(i, 1)
          else:
              backlight.graph_set_led_state(i, 0)
  
      def clear_indicators(self):
          backlight.graph_off()
  
      def set_background_status(self, status):
          if status == BackgroundStatus.Ok:
              backlight.rgb(0, 255, 0)
          elif status == BackgroundStatus.Error:
              backlight.rgb(255, 0, 0)
          elif status == BackgroundStatus.Warn:
              backlight.rgb(255, 255, 0)
          else:
              backlight.rgb(0, 0, 255)
  
subject: Clear LED indicators on boot