用法
需要添加知乎cookie
python3 ./answer_spider_.py -u 《url》#盐选会员回答保存为md格式，存在_post文件下
python3 ./market.py -u 《url》#盐选专栏单个保存为md格式，存在post文件下
python3 ./link_convert.py -u 《url》
例子
python3 ./answer_spider_.py -u https://www.zhihu.com/question/394297429/answer/2538669480
python3 ./market.py -u https://www.zhihu.com/question/394297429/answer/2538669480
python3 ./link_convert.py -u https://www.zhihu.com/answer/2538669480
输出：https://www.zhihu.com/question/394297429/answer/2538669480