2023年3月9日
stata应用举例
摘要： https://www.lianxh.cn/news/2916ae8363459.html https://www.xiaohongshu.com/explore/62fc6f8c00000000140361fa use cfps2018famecon_202101,clear keep fid18 阅读全文
posted @ 2023-03-09 21:02 myrj 阅读(147) 评论(0) 推荐(0)
python: 字典的keys() values() 取得字典的键与值
摘要： >>> attr={"class":"avdata card","data-hash-id":"data-hash-id"} >>> attr.keys() dict_keys(['class', 'data-hash-id']) >>> list(attr.keys()) ['class', 'd 阅读全文
posted @ 2023-03-09 16:43 myrj 阅读(63) 评论(0) 推荐(0)