watcher.py

import sys
import os
import time
import logging
from watchdog.observers import Observer
from watchdog.events import LoggingEventHandler, FileCreatedEvent

source_path = os.path.dirname(os.path.abspath(__file__))

# test_files_dir = os.path.join(source_path, "test_files")

class Event(LoggingEventHandler):
    def on_created(self, event):
        files = []
        files.append(event.src_path)
        if len(files) > 0:
            for file in files:
                filename, file_ext = os.path.splitext(file)
                new_ext = '.PDF'
                if file_ext == '.pdf':
                    os.rename(
                        os.path.join(source_path, file), # source
                        os.path.join(source_path, filename + new_ext) # dest
                    )
                print(file)


if __name__ == "__main__":
    logging.basicConfig(level=logging.INFO,
                        format='%(asctime)s - %(message)s',
                        datefmt='%Y-%m-%d %H:%M:%S')
    # path = sys.argv[1] if len(sys.argv) > 1 else '.'
    event_handler = Event()
    observer = Observer()
    observer.schedule(event_handler, source_path, recursive=True)
    observer.start()
    try:
        while True:
            time.sleep(1)
    except KeyboardInterrupt:
        observer.stop()
    observer.join()