monitor.py

limport os
import pyinotify
from pyinotify import WatchManager, ProcessEvent, Notifier, ThreadedNotifier, EventsCodes

# the directory that will be monitored
watched_dir = './cmds'

# The class that will be passed into the watcher to be called on triggered events
class PTmp(ProcessEvent):
    def process_IN_CLOSE_WRITE(self, event):
        print "Create: %s" %  event.name#os.path.join(event.path, event.name)
        if event.name == "0":
            LED_OFF()
        if event.name == "1":
            LED_RED()
        if event.name == "2":
            LED_BLUE()
        if event.name == "3":
            LED_GREEN()

# create the watch manager
wm = WatchManager()

#create the mask that determines which events to watch for
mask = pyinotify.IN_CLOSE_WRITE 

#create the notifier
notifier = Notifier(wm, PTmp())

#   the watch to be added to the watch
#   '/[monitored directory]'
#   rec=False means no monitoring of nested dirs, can be set true
#   wdd is used for removing 
wdd = wm.add_watch(watched_dir, mask, rec=False)

#LEDSETUP()

while True:  # loop forever
    # process the queue of events as explained above
    notifier.process_events()
    if notifier.check_events():
        # read notified events and enqeue them
        notifier.read_events()
    # you can do some tasks here...