docstr: Appends attribute data to edges or nodes, and stores type information
  to be added later. See add_graph_element.
docstr_tok: ["Appends","attribute","data","to","edges","or","nodes",",","and","stores","type","information","to","be","added","later",".","See","add_graph_element","."]
code: def add_attributes(self, scope, xml_obj, data, default):
      """Appends attribute data to edges or nodes, and stores type information
      to be added later. See add_graph_element.
      """
      for k, v in data.items():
          self.attribute_types[(str(k), scope)].add(type(v))
          self.attributes[xml_obj].append([k, v, scope, default.get(k)])
  
imports: import warnings
  from collections import defaultdict
  import networkx
  from networkx.utils import open_file
label_desc: Use image node_id 6 for calling the GraphMLWriter obj's underlying member method code with example usage: obj.add_attributes(scope, xml_obj, data, default) without return types