Comments (2)
I have what seems to be a similar problem.
Code:
import os
import time
from watchdog.observers import Observer
from watchdog.events import FileSystemEventHandler
class FileModifiedHandler(FileSystemEventHandler):
def __init__(self, path):
self.observer = Observer()
self.observer.schedule(self, path, recursive=True)
self.observer.start()
def on_modified(self, event):
print(event)
def stop(self):
self.observer.stop()
self.observer.join()
def main(n):
path = '.'
fhs = [FileModifiedHandler(path) for _ in range(0, n)]
time.sleep(2)
with open(os.path.join(path, 'temp.txt'), 'w') as f:
f.write('hi')
time.sleep(2)
[fh.stop() for fh in fhs]
if __name__ == '__main__':
print('this works:')
main(1) # OK
print('this fails:')
main(2) # fails
Output:
this works:
<FileModifiedEvent: src_path='./temp.txt'>
this fails:
<FileModifiedEvent: src_path='./temp.txt'>
2016-05-31 19:03 Python[63998] (FSEvents.framework) FSEventStreamStop(): failed assertion 'streamRef != NULL'
2016-05-31 19:03 Python[63998] (FSEvents.framework) FSEventStreamInvalidate(): failed assertion 'streamRef != NULL'
2016-05-31 19:03 Python[63998] (FSEvents.framework) FSEventStreamRelease(): failed assertion 'streamRef != NULL'
Traceback (most recent call last):
File "/Users/james/projects/experiments/watchdog_experiment/watchdog_experiment.py", line 38, in <module>
main(2) # fails
File "/Users/james/projects/experiments/watchdog_experiment/watchdog_experiment.py", line 31, in main
[fh.stop() for fh in fhs]
File "/Users/james/projects/experiments/watchdog_experiment/watchdog_experiment.py", line 31, in <listcomp>
[fh.stop() for fh in fhs]
File "/Users/james/projects/experiments/watchdog_experiment/watchdog_experiment.py", line 20, in stop
self.observer.stop()
File "/Users/james/projects/experiments/watchdog_experiment/venv/lib/python3.4/site-packages/watchdog/utils/__init__.py", line 99, in stop
self.on_thread_stop()
File "/Users/james/projects/experiments/watchdog_experiment/venv/lib/python3.4/site-packages/watchdog/observers/api.py", line 357, in on_thread_stop
self.unschedule_all()
File "/Users/james/projects/experiments/watchdog_experiment/venv/lib/python3.4/site-packages/watchdog/observers/api.py", line 353, in unschedule_all
self._clear_emitters()
File "/Users/james/projects/experiments/watchdog_experiment/venv/lib/python3.4/site-packages/watchdog/observers/api.py", line 230, in _clear_emitters
for emitter in self._emitters:
ValueError: PyCapsule_GetPointer called with invalid PyCapsule object
Process finished with exit code 1
from watchdog.
Fixed sometime ago, added a test to ensure no regression in f3c7f84.
from watchdog.
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