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'(?<![\.\d])(?:\d{1,3}\.){3}\d{1,3}(?![\.\d])',str(each),re.S)

    ip_list.append(ip[0])

  # 列表去重:通过set方法进行处理

  ids = list(set(ip_list))

  print "共解析ip个数:%s "% len(ids)

  ##写出数据到本地

  # 设置输出文件路径

  out = open(output_file_name, "a")

  # out.write("ip" + sep)

  for each in ids:

    print each

    out.write(each + sep)

  ##关闭连接

  out.close()

  _fLog.close()

  print "ip提取完毕~~"

####主函数################

if __name__ == '__main__':

  input_file_name = "C:/myjob.log"

  output_file_name = "c:/myjob.txt"

  read_file(input_file_name, output_file_name)

  time2 = time.time()

  print u'总共耗时：' + str(time2 - time1) + 's'







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.zwyuanma.com/regex/javascript

正则表达式在线生成工具：

http://tools.zwyuanma.com/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。