本文基于Stackoverflows上以下几个Question: Fastest way to remove chars from string (http://stackoverflow.com/questions/2182459/fastest-way-to-remove-chars-from-string) More efficient way to remove special characters from string (http://stackoverflow.com/questi…
介绍了Python统计日志中每个IP出现次数的方法,实例分析了Python基于正则表达式解析日志文件的相关技巧,需要的朋友可以参考下 本脚本可用于多种日志类型 #-*- coding:utf-8 -*- import re,time def mail_log(file_path): global count log=open(file_path,'r') C=r'\.'.join([r'\d{1,3}']*4) find=re.compile(C) count={} for i in log:…
#统计字符串中每个字符出现的次数 以The quick brown fox jumps over the lazy dog为例 message='The quick brown fox jumps over the lazy dog' count={} for character in message: count.setdefault(character,0) count[character]=count[character]+1 print(count) 参考:<Python编程快速上手--…