code: def load_cml(cml_filename):
      
      parser = make_parser()
      parser.setFeature(feature_namespaces, 0)
      dh = CMLMoleculeLoader()
      parser.setContentHandler(dh)
      parser.parse(cml_filename)
      return dh.molecules
docs: Load the molecules from a CML file
  
         Argument:
          | ``cml_filename``  --  The filename of a CML file.
  
         Returns a list of molecule objects with optional molecular graph
         attribute and extra attributes.