csv
the result I see from console is something like this:
https://book.douban.com/subject/1058661/飞鸟集 https://book.douban.com/subject/2070844/梦里花落知多少 https://book.douban.com/subject/26425831/斯通纳 https://book.douban.com/subject/1449352/朝花夕拾 https://book.douban.com/subject/2035171/人生的枷锁 https://book.douban.com/subject/1013267/唐诗三百首 https://book.douban.com/subject/1807516/罗杰疑案 https://book.douban.com/subject/1057244/边城 https://book.douban.com/subject/1034282/时间简史 https://book.douban.com/subject/5038409/金色梦乡 https://book.douban.com/subject/1119839/王尔德童话 https://book.douban.com/subject/6880158/陆犯焉识 https://book.douban.com/subject/2154960/一个陌生女人的来信 https://book.douban.com/subject/10471333/叫魂 https://book.douban.com/subject/10522856/冬牧场 https://book.douban.com/subject/3261600/人生的智慧
while ,the final result is csv is :