code: def copy_count_a(input_a, *other_inputs, **kwargs):
      
  
      count = input_a.count()
  
      input_a.skip_all();
  
      for input_x in other_inputs:
          input_x.skip_all()
  
      return [IOTileReading(0, 0, count)]
docs: Copy the latest reading from input a into the output.
  
      All other inputs are skipped to that after this function
      runs there are no readings left in any of the input walkers
      even if no output is generated.
  
      Returns:
          list(IOTileReading)