code: def _days_to_seconds(cls, val, **kwargs):
          '''
          converts a number of days to seconds
          '''
          zero_value = kwargs.get('zero_value', 0)
          if val is not None:
              if val == 0:
                  return zero_value
              return val * 86400
          else:
              return 'Not Definedf _days_to_seconds(cls, val, **kwargs):
          '''
          converts a number of days to seconds
          '''
          zero_value = kwargs.get('zero_value', 0)
          if val is not None:
              if val == 0:
                  return zero_value
              return val * 86400
          else:
              return 'Not Defined'
docs: converts a number of days to seconds