code: def test_picklability(self):
      from sqlalchemy.ext.orderinglist import OrderingList
  
      olist = OrderingList("order", reorder_on_append=True)
      olist.append(DummyItem())
  
      for loads, dumps in picklers():
          pck = dumps(olist)
          copy = loads(pck)
  
          self.assert_(copy == olist)
          self.assert_(copy.__dict__ == olist.__dict__)
  
imports: from sqlalchemy import ForeignKey
  from sqlalchemy import Integer
  from sqlalchemy import MetaData
  from sqlalchemy import String
  from sqlalchemy import testing
  from sqlalchemy.ext.orderinglist import ordering_list
  from sqlalchemy.orm import clear_mappers
  from sqlalchemy.orm import relationship
  from sqlalchemy.testing import eq_
  from sqlalchemy.testing import fixtures
  from sqlalchemy.testing.fixtures import fixture_session
  from sqlalchemy.testing.schema import Column
  from sqlalchemy.testing.schema import Table
  from sqlalchemy.testing.util import picklers
label_desc: Use image node_id 11 for calling the OrderingListTest obj's underlying member method code with example usage: obj.test_picklability() without return types