class_docstr: Example subclass of the Graph class.
  
  Prints activity log to file or standard output.
class_docstr_tok: ["Example","subclass","of","the","Graph","class",".","Prints","activity","log","to","file","or","standard","output","."]
code: def add_edges_from(self, ebunch, attr_dict=None, **attr):
      for e in ebunch:
          u, v = e[0:2]
          self.add_edge(u, v, attr_dict=attr_dict, **attr)
  
file_path: networkx/examples/subclass/plot_printgraph.py
imports: import matplotlib.pyplot
  import networkx
  from networkx import Graph
label_desc: Use image node_id 7 for calling the PrintGraph obj's underlying member method code with example usage: obj.add_edges_from(ebunch, attr_dict) without return types