python監控系統，python監控網頁內容變化_使用Python監控文件內容變化代碼實例

利用seek監控文件內容，并打印出變化內容：

#/usr/bin/env python

#-*- coding=utf-8 -*-

pos = 0

python監控系統、while True:

con = open("a.txt")

if pos != 0:

con.seek(pos,0)

while True:

網頁內容變動監控、line = con.readline()

if line.strip():

print line.strip()

pos = pos + len(line)

if not line.strip():

web監控軟件？break

con.close()

利用工具pyinotify監控文件內容變化，當文件逐漸變大時，可輕松完成任務：

#!/usr/bin/env python

#-*- coding=utf-8 -*-

python簡單代碼、import os

import datetime

import pyinotify

import logging

pos = 0

Python代碼。def printlog():

global pos

try:

fd = open("log/a.txt")

if pos != 0:

python爬蟲教程、fd.seek(pos,0)

while True:

line = fd.readline()

if line.strip():

print line.strip()

python怎么用？pos = pos + len(line)

if not line.strip():

break

fd.close()

except Exception,e:

python3，print str(e)

class MyEventHandler(pyinotify.ProcessEvent):

def process_IN_MODIFY(self,event):

try:

printlog()

python獲取網頁數據，except Exception,e:

print str(e)

def main():

printlog()

wm = pyinotify.WatchManager()

python如何獲取網頁信息。wm.add_watch("log/a.txt",pyinotify.ALL_EVENTS,rec=True)

eh = MyEventHandler()

notifier = pyinotify.Notifier(wm,eh)

notifier.loop()

if __name__ == "__main__":

python抓取網頁內容并保存，main()