def GetFormatStringAttributeNames(self):
    """Retrieves the attribute names in the format string.

    Returns:
      set(str): attribute names.
    """
    if self._format_string_attribute_names is None:
      self._format_string_attribute_names = (
          self._FORMAT_STRING_ATTRIBUTE_NAME_RE.findall(
              self.FORMAT_STRING))

    return set(self._format_string_attribute_names)
def GetFormatStringAttributeNames ( self ) : if self . _format_string_attribute_names is None : self . _format_string_attribute_names = ( self . _FORMAT_STRING_ATTRIBUTE_NAME_RE . findall ( self . FORMAT_STRING ) ) return set ( self . _format_string_attribute_names )
Retrieves the attribute names in the format string.

    Returns:
      set(str): attribute names.