[BUG] ImportError: cannot import name 'RayCollector' from partially initialized module 'torchrl.collectors.distributed.ray' (most likely due to a circular import)

[jianzhnie]

When attempting to import the RayCollector from the torchrl.collectors.distributed.ray module, an ImportError is raised due to a circular import issue. This error occurs during the initialization of the module, indicating a potential circular dependency within the codebase.

[albertbou92]

Hi! Could you please indicate which version are you using? I have no problem running

from torchrl.collectors.distributed import RayCollector

with version 0.6.0

[albertbou92]

However, I just noticed something that could be the cause of your problem. Are you by any chance running the example in

https://github.com/pytorch/rl/blob/main/examples/distributed/collectors/multi_nodes/ray.py

I believe the name of this file should be changed, as the name clashes with the ray library, causing the circular import error