code: def language(fname, is_ext=False):
      
  
      global _langmapping
  
      # Normalize the fname so that it looks like an extension.
      if is_ext:
          fname = '.' + fname
      _, ext = os.path.splitext(fname)
  
      return _langmapping[ext]()
docs: Return an instance of the language class that fname is suited for.
  
      Searches through the module langs for the class that matches up
      with fname.  If is_ext is True then fname will be taken to be
      the extension for a language.