>>> pip install pyinotify>>> import pyinotify

import pyinotifyimport timeimport osclass ProcessTransientFile(pyinotify.ProcessEvent):  def process_IN_MODIFY(self, event):    line = file.readline()    if line:      print line, # already has newlinefilename = './test.txt'file = open(filename,'r')#Find the size of the file and move to the endst_results = os.stat(filename)st_size = st_results[6]file.seek(st_size)wm = pyinotify.WatchManager()notifier = pyinotify.Notifier(wm)wm.watch_transient_file(filename, pyinotify.IN_MODIFY, ProcessTransientFile)notifier.loop()