1、DataFrame增加一行或一列
https://blog.csdn.net/luoganttcc/article/details/77570024
2、合并两个DataFrame
https://blog.csdn.net/haha_point/article/details/86512316
3、将字符串转换为datetime.date
https://blog.csdn.net/ccdok123/article/details/88538268
4、to_csv,read_csv
5、python去除Excel的重复行数据
原文：https://www.cnblogs.com/zsgyx/p/11966388.html