Python实现从log日志中提取ip的方法【正则提取】

本文实例讲述了Python实现从log日志中提取ip的方法。分享给大家供大家参考，具体如下：

log日志内容如下(myjob.log)：

124.90.53.68 - - [05/Feb/2018 11:37:07] "GET /favicon.ico HTTP/1.1" 404 -
61.148.245.145 - - [05/Feb/2018 12:37:44] "GET / HTTP/1.1" 200 -
61.148.245.145 - - [05/Feb/2018 12:37:44] "GET /apple-touch-icon-120x120-precomposed.png HTTP/1.1" 404 -
61.148.245.145 - - [05/Feb/2018 12:37:44] "GET /apple-touch-icon-120x120.png HTTP/1.1" 404 -
61.148.245.145 - - [05/Feb/2018 12:37:45] "GET /apple-touch-icon-precomposed.png HTTP/1.1" 404 -
61.148.245.145 - - [05/Feb/2018 12:37:45] "GET /apple-touch-icon.png HTTP/1.1" 404 -
61.148.245.145 - - [05/Feb/2018 12:37:45] "GET /static/favicon.ico HTTP/1.1" 200 -
101.226.33.218 - - [05/Feb/2018 13:07:39] "GET / HTTP/1.1" 200 -
101.226.33.219 - - [05/Feb/2018 13:09:46] "GET / HTTP/1.1" 200 -
101.226.33.219 - - [05/Feb/2018 13:09:46] "GET /static/youkulogo.png HTTP/1.1" 200 -
101.226.33.219 - - [05/Feb/2018 13:09:46] "GET /static/iqiyi.png HTTP/1.1" 200 -
101.226.33.219 - - [05/Feb/2018 13:09:46] "GET /static/qqlogo.png HTTP/1.1" 200 -
124.202.223.62 - - [05/Feb/2018 14:29:45] "GET / HTTP/1.1" 200 -
124.202.223.62 - - [05/Feb/2018 14:29:47] "GET /static/youkulogo.png HTTP/1.1" 200 -
124.202.223.62 - - [05/Feb/2018 14:29:48] "GET /static/qqlogo.png HTTP/1.1" 200 -
124.202.223.62 - - [05/Feb/2018 14:29:48] "GET /static/iqiyi.png HTTP/1.1" 200 -
124.202.223.62 - - [05/Feb/2018 14:29:49] "GET /static/favicon.ico HTTP/1.1" 200 -

提取ip:

# encoding: utf-8
import sys
reload(sys)
sys.setdefaultencoding('utf-8')
import pandas as pd
import re
import time
import requests
time1=time.time()
######函数功能:能够提取ip地址，并且去重################
def read_file(input_file_name,output_file_name):
  _fLog = open(input_file_name)
  sep = '\n'
  ip_list=[]
  for each in _fLog:
    ip=re.findall(r'(? 
 

运行结果：

共解析ip个数:5
61.148.245.145
124.90.53.68
124.202.223.62
101.226.33.219
101.226.33.218
ip提取完毕~~
总共耗时：0.000999927520752s
Process finished with exit code 0

PS：这里再为大家提供2款非常方便的正则表达式工具供大家参考使用：

JavaScript正则表达式在线测试工具：
http://tools.jb51.net/regex/javascript

正则表达式在线生成工具：
http://tools.jb51.net/regex/create_reg

更多关于Python相关内容可查看本站专题：《Python正则表达式用法总结》、《Python数据结构与算法教程》、《Python函数使用技巧总结》、《Python字符串操作技巧汇总》、《Python入门与进阶经典教程》及《Python文件与目录操作技巧汇总》

希望本文所述对大家Python程序设计有所帮助。