code: def status(self):
      if not self.open_amount:
          return ORDER_STATUS.FILLED
      elif self._status == ORDER_STATUS.HELD and self.filled:
          return ORDER_STATUS.OPEN
      else:
          return self._status
  
imports: import math
  import uuid
  from six import text_type
  import zipline.protocol
  from zipline.assets import Asset
  from zipline.utils.enum import enum
  from zipline.utils.input_validation import expect_types
label_desc: Use image node_id 9 for calling the Order obj's underlying member method code with example usage: obj.status() and returns: ORDER_STATUS, ORDER_STATUS, self