我想要一個用于 python 的正則表達(dá)式來檢測 URL 鏈接是否有效。它應(yīng)該檢測“/”和“？”之間的數(shù)字 前 5 位數(shù)字為“17110”，后 2 位數(shù)字為“01”，并且必須有 7 位數(shù)字。例如，mainsoup = BeautifulSoup(await r.text(),features="html.parser")for link in mainsoup.find_all('a'),    print(link.get('href'))    #/announcement/171103301?user_id=0&lang=2&phone_type=0    #/announcement/171103501?user_id=0&lang=2&phone_type=0    #/announcement/171101401?user_id=0&lang=2&phone_type=0    #/announcement/60110100005108?user_id=0&lang=2&phone_type=0    #/announcement/60110100005300?user_id=0&lang=2&phone_type=0    #/announcement/1910064?user_id=0&lang=2&phone_type=0    #/announcement/171201811?user_id=0&lang=2&phone_type=0    #placing links into a list    #regex to get first 3 links as valid