python读取excel指定列名，dataframe连接，两列相减作为第三列的值

# encoding: utf-8
import arcpy
import xlrd
import pandas as pd
path=r"D:\pyWork\resultAna\dl"
day=29
while(day>28):
    pp=path+"\\ppday"+str(day)+".xls"
    cs = path + "\\csday" + str(day) + ".xls"
    #读取excel指定列名
    datapp=pd.read_excel(pp,names=['id','score'])
    datacs=pd.read_excel(cs,names=['id','score'])
    #基于某列来连接两个dataframe
    jg=pd.merge(datapp,datacs,how = 'left',on='id')
    #添加一列
    jg['per']=(jg['score_y'])/jg['score_x']
    jg.to_excel("./all/day" + str(day) + ".xls")
    #jg['per']=jg.apply(lambda k: function((k.score_y-k.score_x)/k.score_x), axis = 1)
    day=day-1

标签：第三列,python,excel,id,score,pd,jg,day
来源： https://blog.csdn.net/A873054267/article/details/88094713