_regex_core.py 文件源码

def parse_named_char(source, info, in_set):
    "Parses a named character."
    saved_pos = source.pos
    if source.match("{"):
        name = source.get_while(NAMED_CHAR_PART)
        if source.match("}"):
            try:
                value = unicodedata.lookup(name)
                return make_character(info, ord(value), in_set)
            except KeyError:
                raise error("undefined character name", source.string,
                  source.pos)

    source.pos = saved_pos
    return make_character(info, ord("N"), in_set)