prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  [BUG] Loggers registration
  ## Describe the bug
  
  The [`__init__.py`](https://github.com/facebookresearch/rl/blob/main/torchrl/trainers/loggers/__init__.py) from loggers does not reference the implemented loggers. However, the [docstring from the trainer](https://github.com/facebookresearch/rl/blob/806733f27dfa9a878b75b079de9f18df83f54c2d/torchrl/trainers/helpers/trainers.py#L109) assumes that this kind of import can be run.
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `torchrl/trainers/loggers/__init__.py`
  Content:
  ```
  1 # Copyright (c) Meta Platforms, Inc. and affiliates.
  2 #
  3 # This source code is licensed under the MIT license found in the
  4 # LICENSE file in the root directory of this source tree.
  5 
  6 from .common import Logger
  7
  ```
  --- END FILES ---
  
  Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.
  
  Here is an example:
  
  ```diff
  diff --git a/examples/server_async.py b/examples/server_async.py
  --- a/examples/server_async.py
  +++ b/examples/server_async.py
  @@ -313,4 +313,4 @@
   
   
   if __name__ == "__main__":
  -    asyncio.run(run_async_server("."), debug=True)
  +    asyncio.run(run_async_server(), debug=True)
  diff --git a/examples/server_sync.py b/examples/server_sync.py
  --- a/examples/server_sync.py
  +++ b/examples/server_sync.py
  @@ -313,5 +313,5 @@
   
   
   if __name__ == "__main__":
  -    server = run_sync_server(".")
  +    server = run_sync_server()
       server.shutdown()
  
  ```
  
golden_diff: diff --git a/torchrl/trainers/loggers/__init__.py b/torchrl/trainers/loggers/__init__.py
  --- a/torchrl/trainers/loggers/__init__.py
  +++ b/torchrl/trainers/loggers/__init__.py
  @@ -4,3 +4,6 @@
   # LICENSE file in the root directory of this source tree.
   
   from .common import Logger
  +from .csv import CSVLogger
  +from .tensorboard import TensorboardLogger
  +from .wandb import WandbLogger
  
verification_info: {"golden_diff": "diff --git a/torchrl/trainers/loggers/__init__.py b/torchrl/trainers/loggers/__init__.py\n--- a/torchrl/trainers/loggers/__init__.py\n+++ b/torchrl/trainers/loggers/__init__.py\n@@ -4,3 +4,6 @@\n # LICENSE file in the root directory of this source tree.\n \n from .common import Logger\n+from .csv import CSVLogger\n+from .tensorboard import TensorboardLogger\n+from .wandb import WandbLogger\n", "issue": "[BUG] Loggers registration\n## Describe the bug\r\n\r\nThe [`__init__.py`](https://github.com/facebookresearch/rl/blob/main/torchrl/trainers/loggers/__init__.py) from loggers does not reference the implemented loggers. However, the [docstring from the trainer](https://github.com/facebookresearch/rl/blob/806733f27dfa9a878b75b079de9f18df83f54c2d/torchrl/trainers/helpers/trainers.py#L109) assumes that this kind of import can be run.\n", "before_files": [{"content": "# Copyright (c) Meta Platforms, Inc. and affiliates.\n#\n# This source code is licensed under the MIT license found in the\n# LICENSE file in the root directory of this source tree.\n\nfrom .common import Logger\n", "path": "torchrl/trainers/loggers/__init__.py"}], "after_files": [{"content": "# Copyright (c) Meta Platforms, Inc. and affiliates.\n#\n# This source code is licensed under the MIT license found in the\n# LICENSE file in the root directory of this source tree.\n\nfrom .common import Logger\nfrom .csv import CSVLogger\nfrom .tensorboard import TensorboardLogger\nfrom .wandb import WandbLogger\n", "path": "torchrl/trainers/loggers/__init__.py"}]}