prompt: You will be provided with a partial code base and an issue statement explaining a problem to resolve.
  <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.
  
  </issue>
  <code>
  [start of torchrl/trainers/loggers/__init__.py]
  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 of torchrl/trainers/loggers/__init__.py]
  </code>
  
  I need you to solve this issue by generating a single patch file that I can apply directly to this repository using git apply. Please respond with a single patch file in the following format.
  <patch>
  diff --git a/file.py b/file.py
  --- a/file.py
  +++ b/file.py
  @@ -1,27 +1,35 @@
   def euclidean(a, b):
  -    while b:
  -        a, b = b, a % b
  -    return a
  +    if b == 0:
  +        return a
  +    return euclidean(b, a % b)
   
   
   def bresenham(x0, y0, x1, y1):
       points = []
       dx = abs(x1 - x0)
       dy = abs(y1 - y0)
  -    sx = 1 if x0 < x1 else -1
  -    sy = 1 if y0 < y1 else -1
  -    err = dx - dy
  +    x, y = x0, y0
  +    sx = -1 if x0 > x1 else 1
  +    sy = -1 if y0 > y1 else 1
   
  -    while True:
  -        points.append((x0, y0))
  -        if x0 == x1 and y0 == y1:
  -            break
  -        e2 = 2 * err
  -        if e2 > -dy:
  -            err -= dy
  -            x0 += sx
  -        if e2 < dx:
  -            err += dx
  -            y0 += sy
  +    if dx > dy:
  +        err = dx / 2.0
  +        while x != x1:
  +            points.append((x, y))
  +            err -= dy
  +            if err < 0:
  +                y += sy
  +                err += dx
  +            x += sx
  +    else:
  +        err = dy / 2.0
  +        while y != y1:
  +            points.append((x, y))
  +            err -= dx
  +            if err < 0:
  +                x += sx
  +                err += dy
  +            y += sy
  +
  +    points.append((x, y))
       return points
  
  </patch>
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"}]}