python pandas 中 apply，applymap 和map的区别

Question

如题所述

Answer 1

apply Dataframe Series 可改axis=1换成行计算
applymap Dataframe 元素级别
map Series 元素级别

可以去Stack Overflow相关问题：[Difference between map, applymap and apply methods in Pandas|http://stackoverflow.com/questions/19798153/difference-between-map-applymap-and-apply-methods-in-pandas]
说的很详细