code: def convert_unicode_field(string):
      
      values = []
      for codepoint in [s for s in string.split(DATA_FILE_CODEPOINT_SEPARATOR) if (s != DATA_FILE_VALUE_NOT_AVAILABLE) and (len(s) > 0)]:
          values.append(u"".join([hex_to_unichr(c) for c in codepoint.split(DATA_FILE_CODEPOINT_JOINER)]))
      return values
docs: Convert a Unicode field into the corresponding list of Unicode strings.
  
      The (input) Unicode field is a Unicode string containing
      one or more Unicode codepoints (``xxxx`` or ``U+xxxx`` or ``xxxx_yyyy``),
      separated by a space.
  
      :param str string: the (input) Unicode field
      :rtype: list of Unicode strings