I don't know if this makes any sense

dirwatcher.py

import os
import asyncio


async def watch (dir_to_watch, callbacks, interval=2, fire_for_existing_files=True):
    counter = 0
    current_contents = None
    callbacks = callbacks
    if not fire_for_existing_files:
        before = set(os.listdir(dir_to_watch))
    else:
        before = set()
    while True:
        await asyncio.sleep(interval)
        after = set(os.listdir(dir_to_watch))
        added = after-before
        removed = before-after
        unchanged = before.intersection(after)
        if added or removed:
            changes = (added, removed, unchanged)
            for func in callbacks:
                func(changes)
        before = after
    return

  
def print_changes(to_print):
    new, deleted, same = to_print
    print("new files:", new)
    print("deleted files:", deleted)
    print("files unchanged:", same)

#to call:
#>>>loop = asyncio.get_event_loop()
#>>> loop.run_until_complete(dirwatcher.watch("C:/test", [dirwatcher.print_changes], interval=5))