KQueue implementation tries to open each new file

[UnitedMarsupials]

The simple directory-watching script is below:

import logging
import sys
import time

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

class MyEventHandler(FileSystemEventHandler):
	def __init__(self, observer, log):
		self.log = log
		self.observer = observer

	def on_created(self, event):
		self.log.info("%s", event)

def main(argv):
	logging.basicConfig(format = '%(asctime)s %(levelname)-8s %(message)s',
	    datefmt = '%Y-%m-%d %H:%M:%S',
	    level = logging.DEBUG)
	log = logging.getLogger(__name__)
	path = argv[1]
	observer = Observer()
	log.debug('Created observer %s', observer)
	event_handler = MyEventHandler(observer, log)
	observer.schedule(event_handler, path, recursive = False)
	observer.start()
	observer.join()
	return 0

if __name__ == "__main__":
	sys.exit(main(sys.argv))

Started as something like ./fpounce.py /tmp it works, but the observer-thread crashes as soon as a file is created in the watched directory (/tmp) by some other user (such as the www):

2025-07-09 14:30:41 DEBUG    Created observer <KqueueObserver(Thread-1, initial daemon)>
2025-07-09 14:30:42 INFO     FileCreatedEvent(src_path='/tmp/sess_e645f55f69770d25a08b8210245510f6', dest_path='', event_type='created', is_directory=False, is_synthetic=False)
Exception in thread Thread-2:
Traceback (most recent call last):
  File "/opt/lib/python3.11/threading.py", line 1045, in _bootstrap_inner
    self.run()
  File "/opt/lib/python3.11/site-packages/watchdog/observers/api.py", line 158, in run
    self.queue_events(self.timeout)
  File "/opt/lib/python3.11/site-packages/watchdog/observers/kqueue.py", line 630, in queue_events
    self.queue_event(FileCreatedEvent(file_created))
  File "/opt/lib/python3.11/site-packages/watchdog/observers/kqueue.py", line 481, in queue_event
    self._register_kevent(event.src_path, is_directory=event.is_directory)
  File "/opt/lib/python3.11/site-packages/watchdog/observers/kqueue.py", line 435, in _register_kevent
    self._descriptors.add(path, is_directory=is_directory)
  File "/opt/lib/python3.11/site-packages/watchdog/observers/kqueue.py", line 215, in add
    self._add_descriptor(KeventDescriptor(path, is_directory=is_directory))
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/lib/python3.11/site-packages/watchdog/observers/kqueue.py", line 294, in __init__
    self._fd = os.open(path, WATCHDOG_OS_OPEN_FLAGS)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
PermissionError: [Errno 13] Permission denied: '/tmp/sess_e645f55f69770d25a08b8210245510f6'

Why is it trying to open the newly-created files? Can I disable this somehow -- or make failures non-fatal?

This is on FreeBSD using python-3.11 and watchdog-6.0.0.

Testing the same code on Linux -- no problem there with python-3.6 and watchdog-2.1.9. The new files are duly reported and that's it.