docs: def expand_namespace(nsmap, string):
      """ If the string starts with a known prefix in nsmap, replace it by full URI
  
      :param nsmap: Dictionary of prefix -> uri of namespace
      :param string: String in which to replace the namespace
      :return: Expanded string with no namespace
      """
      for ns in nsmap:
          if isinstance(string, str) and isinstance(ns, str) and string.startswith(ns+":"):
              return string.replace(ns+":", nsmap[ns])
      return string