class_docstr: The fake KVStore client.
  
  This is to mimic the distributed KVStore client. It's used for DistGraph
  in standalone mode.
class_docstr_tok: ["The","fake","KVStore","client",".","This","is","to","mimic","the","distributed","KVStore","client",".","It","'s","used","for","DistGraph","in","standalone","mode","."]
code: def __init__(self):
      self._data = {}
      self._all_possible_part_policy = {}
      self._push_handlers = {}
      self._pull_handlers = {}
      # Store all graph data name
      self._gdata_name_list = set()
  
imports: from ..None import backend
label_desc: Use image node_id 1 to create a new KVClient object from inherited base classes: object with example: obj = KVClient()