$keyword=preg_replace("/(%7E|%60|%21|%40|%23|%24|%25|%5E|%26|%27|%2A|%28|%29|%2B|%7C|%5C|%3D|\-|_|%5B|%5D|%7D|%7B|%3B|%22|%3A|%3F|%3E|%3C|%2C|\.|%2F|%A3%BF|%A1%B7|%A1%B6|%A1%A2|%A1%A3|%A3%AC|%7D|%A1%B0|%A3%BA|%A3%BB|%A1%AE|%A1%AF|%A1%B1|%A3%FC|%A3%BD|%A1%AA|%A3%A9|%A3%A8|%A1%AD|%A3%A4|%A1%A4|%A3%A1)+/",'',$keyword);这段是php的正则替换，如何转换成python的正则？
