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.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。