def format_field(self, value, format_spec):
if format_spec:<EOL><INDENT>spec, arg = format_spec[<NUM_LIT:0>], format_spec[<NUM_LIT:1>:]<EOL>arg = arg or None<EOL><DEDENT>else:<EOL><INDENT>spec = arg = None<EOL><DEDENT>return self._format_field(spec, arg, value, self.numeric_locale)<EOL>
Format specifiers are described in :func:`format_field` which is a
        static function.