code: def __init__(self):
      self.G = None
      self.look_up_dict = {}
      self.look_back_list = []
      self.node_size = 0
  
file_path: OpenNE/src/openne/graph.py
imports: import networkx
  import pickle
  import numpy
  import scipy.sparse
label_desc: Use image node_id 1 to create a new Graph object from inherited base classes: object with example: obj = Graph()