old_contents: #!/usr/bin/env python3
  
  import RPi.GPIO as GPIO
  from settings import SOLUTION_TANK_CONFIG
  
  
  class SolutionTankInterface:
      """
      Solution tank interface uses float switch to check solution level.
      """
  
      def __init__(self, config):
          self.gpio_float_switch = config['gpio_float_switch']
          self.float_switch_state_when_full = config['float_switch_state_when_full']
  
          GPIO.setmode(GPIO.BCM)
  
          GPIO.setup(self.gpio_float_switch, GPIO.IN)
  
      def __del__(self):
          GPIO.cleanup()
  
      def is_full(self):
          float_switch_state = GPIO.input(self.gpio_float_switch)
          return float_switch_state == self.float_switch_state_when_full
  
  
  def main():
      t = SolutionTankInterface(SOLUTION_TANK_CONFIG)
      print('Is full: ' + str(t.is_full()))
  
  
  if __name__ == '__main__':
      main()
  
new_contents: #!/usr/bin/env python3
  
  import time
  import RPi.GPIO as GPIO
  from settings import SOLUTION_TANK_CONFIG
  
  
  class SolutionTankInterface:
      """
      Solution tank interface uses float switch to check solution level.
      """
  
      def __init__(self, config):
          self.gpio_float_switch = config['gpio_float_switch']
          self.float_switch_state_when_full = config['float_switch_state_when_full']
  
          GPIO.setmode(GPIO.BCM)
  
          GPIO.setup(self.gpio_float_switch, GPIO.IN)
  
      def __del__(self):
          GPIO.cleanup()
  
      def is_full(self):
          float_switch_state = GPIO.input(self.gpio_float_switch)
          return float_switch_state == self.float_switch_state_when_full
  
  
  def main():
      t = SolutionTankInterface(SOLUTION_TANK_CONFIG)
      while True:
          try:
              is_full = t.is_full()
              print('Is full: ' + str(is_full))
              time.sleep(1)
          except Exception as e:
              print(e)
  
  
  if __name__ == '__main__':
      main()
  
subject: print status in a loop