1 #-*- coding:utf-8 -*- 2 #根据第一列，统计和 3  4 ''' 5 cat info.txt  6  7 lisa,99 8 bart,80 9 lisa,10010 bart,8911 tom,8712 13 '''14 15 d={}16 with open('info.txt') as f:17     for line in f:18         line=line.strip().split(',')19         if line[0] in d:20             d[line[0]]+=int(line[1])21         else:22             d[line[0]]=int(line[1])23             24 for k,v in d.items():25     print k,v26