code: def write_attribute_adj_list(self, path):
          
          att_mappings = self.get_attribute_mappings()
  
          with open(path, mode="w") as file:
              for k, v in att_mappings.items():
                  print("{} {}".format(k, " ".join(str(e) for e in v)), file=file)
docs: Write the bipartite attribute graph to a file.
  
          :param str path: Path to the output file.