iterrows和enumerate和for循环
import pandas as pdimport numpy as np#构造B列为多值,那么B列是字符串,也就是['','',''],这样可以split。不能写成[[],[],[]],这样是list,list不能split。temp=pd.DataFrame({'A':[1,2,3],'B':['4,2,1','5,3,2','6,4,3']},index=['a','b','c'])...