old_contents: 
  from pygr import worldbase
  from metabase import ResourceServer, dumps, OneToManyRelation, OneToOneRelation,\
       ManyToManyRelation, WorldbaseNotPortableError, WorldbaseNotFoundError, \
       WorldbaseMismatchError, WorldbaseEmptyError, WorldbaseReadOnlyError, \
       WorldbaseSchemaError, WorldbaseNoModuleError, ResourceZone
  
  schema = worldbase.schema # ROOT OF OUR SCHEMA NAMESPACE
  
  # PROVIDE TOP-LEVEL NAMES IN OUR RESOURCE HIERARCHY
  Bio = worldbase.Bio
  
  getResource = worldbase._mdb # our metabase interface
  addResource = worldbase._mdb.add_resource
  def addResourceDict(d, layer=None):
      'queue a dict of name:object pairs for saving to specified db layer'
      if layer is not None: # use the named metabase specified by layer
          mdb = worldbase._mdb.zoneDict[layer] # KeyError if layer not found!
      else: # use default MetabaseList
          mdb = worldbase._mdb
      for k,v in d.items(): # queue each resource in the dictionary
          mdb.add_resource(k, v)
  
  addSchema = worldbase._mdb.add_schema
  deleteResource = worldbase._mdb.delete_resource
  dir = worldbase._mdb.dir
  def newServer(*args, **kwargs):
      return ResourceServer(worldbase._mdb, *args, **kwargs)
  save = worldbase._mdb.commit
  rollback = worldbase._mdb.rollback
  list_pending = worldbase._mdb.list_pending
  loads = worldbase._mdb.loads
  update = worldbase._mdb.update
  clear_cache = worldbase._mdb.clear_cache
  
  # TOP-LEVEL NAMES FOR STANDARDIZED LAYERS
  here = ResourceZone(getResource, 'here')
  my = ResourceZone(getResource, 'my')
  system = ResourceZone(getResource, 'system')
  subdir = ResourceZone(getResource, 'subdir')
  remote = ResourceZone(getResource, 'remote')
  MySQL = ResourceZone(getResource, 'MySQL')
  
  __all__ = ('Bio', 'schema', 'getResource', 'addResource', 'addSchema',
             'deleteResource', 'dir', 'newServer', 'save', 'rollback',
             'list_pending', 'loads', 'dumps', 'update', 'clear_cache',
             'OneToManyRelation', 'ManyToManyRelation',
             'OneToOneRelation', 'WorldbaseNotPortableError',
             'WorldbaseNotFoundError', 'WorldbaseMismatchError',
             'WorldbaseEmptyError', 'WorldbaseReadOnlyError',
             'WorldbaseSchemaError', 'WorldbaseNoModuleError',
             'here', 'my', 'system', 'subdir', 'remote', 'MySQL')
  
  
new_contents: 
  import warnings
  warnings.warn('pygr.Data is deprecated.  Use "from pygr import worldbase" instead!',
                DeprecationWarning, stacklevel=2)
  
  from pygr import worldbase
  from metabase import ResourceServer, dumps, OneToManyRelation, OneToOneRelation,\
       ManyToManyRelation, WorldbaseNotPortableError, WorldbaseNotFoundError, \
       WorldbaseMismatchError, WorldbaseEmptyError, WorldbaseReadOnlyError, \
       WorldbaseSchemaError, WorldbaseNoModuleError, ResourceZone
  
  schema = worldbase.schema # ROOT OF OUR SCHEMA NAMESPACE
  
  # PROVIDE TOP-LEVEL NAMES IN OUR RESOURCE HIERARCHY
  Bio = worldbase.Bio
  
  getResource = worldbase._mdb # our metabase interface
  addResource = worldbase._mdb.add_resource
  def addResourceDict(d, layer=None):
      'queue a dict of name:object pairs for saving to specified db layer'
      if layer is not None: # use the named metabase specified by layer
          mdb = worldbase._mdb.zoneDict[layer] # KeyError if layer not found!
      else: # use default MetabaseList
          mdb = worldbase._mdb
      for k,v in d.items(): # queue each resource in the dictionary
          mdb.add_resource(k, v)
  
  addSchema = worldbase._mdb.add_schema
  deleteResource = worldbase._mdb.delete_resource
  dir = worldbase._mdb.dir
  def newServer(*args, **kwargs):
      return ResourceServer(worldbase._mdb, *args, **kwargs)
  save = worldbase._mdb.commit
  rollback = worldbase._mdb.rollback
  list_pending = worldbase._mdb.list_pending
  loads = worldbase._mdb.loads
  update = worldbase._mdb.update
  clear_cache = worldbase._mdb.clear_cache
  
  # TOP-LEVEL NAMES FOR STANDARDIZED LAYERS
  here = ResourceZone(getResource, 'here')
  my = ResourceZone(getResource, 'my')
  system = ResourceZone(getResource, 'system')
  subdir = ResourceZone(getResource, 'subdir')
  remote = ResourceZone(getResource, 'remote')
  MySQL = ResourceZone(getResource, 'MySQL')
  
  __all__ = ('Bio', 'schema', 'getResource', 'addResource', 'addSchema',
             'deleteResource', 'dir', 'newServer', 'save', 'rollback',
             'list_pending', 'loads', 'dumps', 'update', 'clear_cache',
             'OneToManyRelation', 'ManyToManyRelation',
             'OneToOneRelation', 'WorldbaseNotPortableError',
             'WorldbaseNotFoundError', 'WorldbaseMismatchError',
             'WorldbaseEmptyError', 'WorldbaseReadOnlyError',
             'WorldbaseSchemaError', 'WorldbaseNoModuleError',
             'here', 'my', 'system', 'subdir', 'remote', 'MySQL')
  
  
subject: add warning: pygr.Data is deprecated