FileExistsError while starting multiple experiments at the same time

[irenezhang30]

File "/usr/local/lib/python3.5/dist-packages/sacred-0.7.2-py3.5.egg/sacred/observers/file_storage.py", line 109, in started_event
os.mkdir(self.dir)
FileExistsError: [Errno 17] File exists: '/home/pymarl2/smac_exp_results/sacred/505'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/pymarl2/src/main.py", line 107, in
ex.run_commandline(params)
File "/usr/local/lib/python3.5/dist-packages/sacred-0.7.2-py3.5.egg/sacred/experiment.py", line 250, in run_commandline
return self.run(cmd_name, config_updates, named_configs, {}, args)
File "/usr/local/lib/python3.5/dist-packages/sacred-0.7.2-py3.5.egg/sacred/experiment.py", line 199, in run
run()
File "/usr/local/lib/python3.5/dist-packages/sacred-0.7.2-py3.5.egg/sacred/run.py", line 247, in call
self._stop_heartbeat()
File "/usr/local/lib/python3.5/dist-packages/sacred-0.7.2-py3.5.egg/sacred/run.py", line 282, in _stop_heartbeat
self._emit_heartbeat() # one final beat to flush pending changes
File "/usr/local/lib/python3.5/dist-packages/sacred-0.7.2-py3.5.egg/sacred/run.py", line 352, in _emit_heartbeat
result=self.result)
File "/usr/local/lib/python3.5/dist-packages/sacred-0.7.2-py3.5.egg/sacred/run.py", line 399, in _safe_call
getattr(obs, method)(**kwargs)
File "/usr/local/lib/python3.5/dist-packages/sacred-0.7.2-py3.5.egg/sacred/observers/file_storage.py", line 172, in heartbeat_event
self.run_entry['heartbeat'] = beat_time.isoformat()
TypeError: 'NoneType' object does not support item assignment

[thequilo]

Do you only use the FileStorageObserver or do you use any other observers at the same time?

[irenezhang30]

Do you only use the FileStorageObserver or do you use any other observers at the same time?

I only use the FileStorageObserver, for code see here: https://github.com/oxwhirl/pymarl/blob/73960e11c5a72e7f9c492d36dbfde02016fde05a/src/main.py#L96

[thequilo]

I just saw that you use sacred Version 0.7.2. This issue got fixed in #473. The fix is in the current version on PyPi.

[irenezhang30]

Got it working now, Thank you!