How do I stop the execution of watchdog after file has been found?

Question

I have the following code written to search for all csv files in a file path and print the first csv file. However, my code keeps running even after the watchdog has executed the action. How do I get the watchdog to stop once it finds and prints the set file.

Essentially, I want the code to quit running if the file is found and read.

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


if __name__ == "__main__":
    logging.basicConfig(level=logging.INFO,
                        format='%(asctime)s - %(message)s')
    path = "C:/Users/Desktop/Test/"
    extension = 'csv'
    all_filenames = [i for i in glob.glob('*.{}'.format(extension))]

 # convert 1st csv in list to pandas df then print
    first_csv = pd.read_csv(all_filenames[0])
    print(first_csv)
    
   
    event_handler = LoggingEventHandler()
    observer = Observer()
    observer.schedule(event_handler, path, recursive=True)  

    observer.start()  

#for starting the observer thread
    try:
        while True:
            time.sleep(1)
    except KeyboardInterrupt:
        observer.stop()