redis submodule cannot be imported due to circular import about portalocker

[wolph]

Can you tell me the Python version you are using? It is probably related to that.

[wolph]

Can you try the develop branch to see if that helps?

[ChrisGrosss]

hi, thanks for the fast response.

I am currently running this on Python 3.8.5.

I downloaded and installed the develop branch. I saw that the redis submodule has been renamed to redis_lock. After running the example code lock = portalocker.RedisLock('some_lock_channel_name') I still got a TypeError as before TypeError: 'NoneType' object is not callable. When I imported the redis_lock submodule directly I observed a ModuleNotFoundError (ModuleNotFoundError: No module named 'redis'). Then I realised that redis is not the name of the original submodule that is part of the portalocker package but an independent package which needs to be installed first.

Following, I looked into the setup.py and see that redis is stated as a required package but for an unknown reason it wasn't installed automatically during my previous attempts. After installing redis and reinstalling portalocker it seems to work without any problems.

Thank you for the fast response.

Best regards,
Christian

[wolph]

Ah, that makes sense. The redis requirement is an optional one. To install you could do: pip install portalocker[redis]

Not everyone that uses this package is interested in redis so it should not be required in all cases