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本文實例講述了Python實現從log日志中提取ip的方法。分享給大家供大家參考，具體如下：
log日志內容如下(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()
######函數功能:能夠提取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:通過set方法進行處理
ids = list(set(ip_list))
print "共解析ip個數:%s "% len(ids)
##寫出數據到本地
# 設置輸出文件路徑
out = open(output_file_name, "a")
# out.write("ip" + sep)
for each in ids:
print each
out.write(each + sep)
##關閉連接
out.close()
_fLog.close()
print "ip提取完畢~~"
####主函數################
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'總共耗時：' + str(time2 - time1) + 's'
運行結果：
共解析ip個數:5
61.148.245.145
124.90.53.68
124.202.223.62
101.226.33.219
101.226.33.218
ip提取完畢~~
總共耗時：0.000999927520752s
Process finished with exit code 0
PS：這里再為大家提供2款非常方便的正則表達式工具供大家參考使用：
JavaScript正則表達式在線測試工具：
http://tools.jb51.net/regex/javascript
正則表達式在線生成工具：
http://tools.jb51.net/regex/create_reg
更多關于Python相關內容可查看本站專題：《Python正則表達式用法總結》、《Python數據結構與算法教程》、《Python函數使用技巧總結》、《Python字符串操作技巧匯總》、《Python入門與進階經典教程》及《Python文件與目錄操作技巧匯總》
希望本文所述對大家Python程序設計有所幫助。
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