Simple file monitoring in python

filemonitor.py

import os, time

last_modified = None
def ease_sleep():
    now = time.time()
    if (now - last_modified) < 1:
        print 'sleeping less'
        time.sleep(0.001)
    else:
        time.sleep(1)


while 1:
    stats = os.stat('PATH TO FILE')

    if last_modified == None:
        last_modified = stats.st_mtime
    else:
        if last_modified != stats.st_mtime:
            print stats.st_mtime
            last_modified = stats.st_mtime
    ease_sleep()