gistfile1.txt

import sys
import time
import logging
from watchdog.observers import Observer
from watchdog.events import *

#http://stackoverflow.com/questions/18599339/python-watchdog-monitoring-file-for-changes
class MyHandler(LoggingEventHandler):
    #this creates the list of paths
    def __init__(self):
        #make this a set not a list
        self.paths = set([])

    #this runs when a file is modified 
    def on_modified(self,event):

        #checks if the src path is in the queue of paths 
        if (event.src_path) in self.paths:
            #if it is, remove it and print the new path 
            self.paths.remove(event.src_path)
            print("OLD " +", ".join(self.paths))
        
        else:
            #if it isn't in the queue, and isn't '.' then add it in. 
            if (event.src_path != '.'):
                self.paths.add(event.src_path)
            #print out the new path
            print("NEW " +", ".join(self.paths))

    def on_created(self,event):
        print("FILE CREATED")

def test_function():
    print("File was modified!")
    #we can parse the new file for differences 

if __name__ == "__main__":
    print("watchdog up")
    logging.basicConfig(level=logging.INFO,format='%(asctime)s - %(message)s',datefmt='%Y-%m-%d %H:%M:%S')

    #right now I just use the most basic handler, but we couuld use regex or pattern handler. 
    my_handler = MyHandler()
    l_handler =  LoggingEventHandler()
    r_handler=RegexMatchingEventHandler(regexes=['.*'], ignore_regexes=[], ignore_directories=False, case_sensitive=False)
    p_handler=PatternMatchingEventHandler(patterns =None, ignore_patterns=[],ignore_directories=False, case_sensitive=False)
    #we need to create an actual observer. 
    observer = Observer()
    #we feed the event handler the observer, with the proper 
    observer.schedule(my_handler, '.', recursive=True)
    observer.start()
    try:
        while True:
            time.sleep(1)
    except KeyboardInterrupt:
        observer.stop()
    observer.join()