这段代码可以监控当前目录及子目录文件的创建，修改，删除等变化，需要用到pyinotify模块，pyinotify模块可以到：http://pyinotify.sourceforge.net/ 下载

#!/usr/bin/env python 
#coding=utf-8 
  
import os 
from pyinotify import WatchManager, Notifier, ProcessEvent, IN_DELETE, IN_CREATE,IN_MODIFY 
wm = WatchManager() 
mask = IN_DELETE | IN_CREATE |IN_MODIFY   # watched events 
  
class PFilePath(ProcessEvent): 
    def process_IN_CREATE(self, event): 
        print   "Create file: %s " %   os.path.join(event.path, event.name) 
  
    def process_IN_DELETE(self, event): 
        print   "Delete file: %s " %   os.path.join(event.path, event.name) 
      
    def process_IN_MODIFY(self, event): 
            print   "Modify file: %s " %   os.path.join(event.path, event.name) 
      
  
if __name__ == "__main__": 
      
    notifier = Notifier(wm, PFilePath()) 
    wdd = wm.add_watch('.', mask, rec=True) 
  
    while True: 
        try : 
            notifier.process_events() 
            if notifier.check_events(): 
                notifier.read_events() 
        except KeyboardInterrupt: 
            notifier.stop() 
            break