fix

src/watchdog/observers/api.py

@@ -301,12 +301,7 @@ def schedule(self, event_handler, path, recursive=False, event_filter=None):
 
             # If we don't have an emitter for this watch already, create it.
             if self._emitter_for_watch.get(watch) is None:
-                emitter = self._emitter_class(
-                    event_queue=self.event_queue,
-                    watch=watch,
-                    timeout=self.timeout,
-                    event_filter=event_filter,
-                )
+                emitter = self._emitter_class(self.event_queue, watch, timeout=self.timeout, event_filter=event_filter)
                 if self.is_alive():
                     emitter.start()
                 self._add_emitter(emitter)

src/watchdog/observers/fsevents.py

@@ -161,7 +161,7 @@ def queue_events(self, timeout, events):
         if logger.getEffectiveLevel() <= logging.DEBUG:
             for event in events:
                 flags = ", ".join(attr for attr in dir(event) if getattr(event, attr) is True)
-                logger.debug("{}: {}", event, flags)
+                logger.debug("%s: %s", event, flags)
 
         if time.monotonic() - self._start_time > 60:
             # Event history is no longer needed, let's free some memory.

src/watchdog/observers/fsevents2.py

@@ -125,7 +125,7 @@ def stop(self):
 
     def _callback(self, streamRef, clientCallBackInfo, numEvents, eventPaths, eventFlags, eventIDs):
         events = [NativeEvent(path, flags, _id) for path, flags, _id in zip(eventPaths, eventFlags, eventIDs)]
-        logger.debug("FSEvents callback. Got {} events:", numEvents)
+        logger.debug("FSEvents callback. Got %d events:", numEvents)
         for e in events:
             logger.debug(e)
         self._queue.put(events)