watches a directory for file events and responds with handler

watcher_handler.py

'''
watcher and handler

to install watchdog for python3: pip3 install watchdog
sourced from https://www.michaelcho.me/article/using-pythons-watchdog-to-monitor-changes-to-a-directory
'''


import time
from watchdog.observers import Observer
from watchdog.events import FileSystemEventHandler


class Watcher:
    DIRECTORY_TO_WATCH = "/path/to/test/"

    def __init__(self):
        self.observer = Observer()

    def run(self):
        event_handler = Handler()
        self.observer.schedule(event_handler, self.DIRECTORY_TO_WATCH, recursive=True)
        self.observer.start()
        try:
            while True:
                time.sleep(5)
        except:
            self.observer.stop()
            print("Error")

        self.observer.join()


class Handler(FileSystemEventHandler):

    @staticmethod
    def on_any_event(event):
        if event.is_directory:
            return None

        elif event.event_type == 'created':
            # Take any action here when a file is first created.
            print( "Received created event - %s." % event.src_path )

        elif event.event_type == 'modified':
            # Taken any action here when a file is modified.
            print( "Received modified event - %s." % event.src_path )


if __name__ == '__main__':
    w = Watcher()
    w.run()