如何利用python合并文本

#! /usr/bin/env python

#coding=utf-8

fp01=open("bonus.txt","r")

a=[]

for line01 in fp01:

    a.append(line01)

fp02=open("employee.txt","r")

fc02=sorted(fp02,key=lambda x:x.split()[1])

for line02 in fc02:

    i=0

    while line02.split()[0]!=a[i].split()[0]:

        i+=1

    print "%s %s %s %s" % (line02.split()[0],line02.split()[1],line02.split()[2],a[i].split()[1])

fp01.close()

fp02.close()