diff --git a/docs/tutorials/utils/generate_cow_renders.py b/docs/tutorials/utils/generate_cow_renders.py
index 01b6087c..eaf0ced5 100644
--- a/docs/tutorials/utils/generate_cow_renders.py
+++ b/docs/tutorials/utils/generate_cow_renders.py
@@ -12,13 +12,13 @@ from pytorch3d.io import load_objs_as_meshes
 from pytorch3d.renderer import (
     BlendParams,
     FoVPerspectiveCameras,
+    look_at_view_transform,
     MeshRasterizer,
     MeshRenderer,
     PointLights,
     RasterizationSettings,
     SoftPhongShader,
     SoftSilhouetteShader,
-    look_at_view_transform,
 )
 
 
diff --git a/projects/nerf/nerf/eval_video_utils.py b/projects/nerf/nerf/eval_video_utils.py
index 378e75d4..a84e4b17 100644
--- a/projects/nerf/nerf/eval_video_utils.py
+++ b/projects/nerf/nerf/eval_video_utils.py
@@ -8,7 +8,7 @@ import math
 from typing import Tuple
 
 import torch
-from pytorch3d.renderer import PerspectiveCameras, look_at_view_transform
+from pytorch3d.renderer import look_at_view_transform, PerspectiveCameras
 from torch.utils.data.dataset import Dataset
 
 
diff --git a/projects/nerf/nerf/implicit_function.py b/projects/nerf/nerf/implicit_function.py
index 472a4a35..ef1278bb 100644
--- a/projects/nerf/nerf/implicit_function.py
+++ b/projects/nerf/nerf/implicit_function.py
@@ -8,7 +8,7 @@ from typing import Tuple
 
 import torch
 from pytorch3d.common.linear_with_repeat import LinearWithRepeat
-from pytorch3d.renderer import HarmonicEmbedding, RayBundle, ray_bundle_to_ray_points
+from pytorch3d.renderer import HarmonicEmbedding, ray_bundle_to_ray_points, RayBundle
 
 
 def _xavier_init(linear):
diff --git a/pytorch3d/common/linear_with_repeat.py b/pytorch3d/common/linear_with_repeat.py
index c9f62355..2dd477be 100644
--- a/pytorch3d/common/linear_with_repeat.py
+++ b/pytorch3d/common/linear_with_repeat.py
@@ -9,7 +9,7 @@ from typing import Tuple
 
 import torch
 import torch.nn.functional as F
-from torch.nn import Parameter, init
+from torch.nn import init, Parameter
 
 
 class LinearWithRepeat(torch.nn.Module):
diff --git a/pytorch3d/datasets/__init__.py b/pytorch3d/datasets/__init__.py
index 191cbb0e..3dbee1eb 100644
--- a/pytorch3d/datasets/__init__.py
+++ b/pytorch3d/datasets/__init__.py
@@ -4,7 +4,7 @@
 # This source code is licensed under the BSD-style license found in the
 # LICENSE file in the root directory of this source tree.
 
-from .r2n2 import R2N2, BlenderCamera, collate_batched_R2N2, render_cubified_voxels
+from .r2n2 import BlenderCamera, collate_batched_R2N2, R2N2, render_cubified_voxels
 from .shapenet import ShapeNetCore
 from .utils import collate_batched_meshes
 
diff --git a/pytorch3d/datasets/r2n2/r2n2.py b/pytorch3d/datasets/r2n2/r2n2.py
index 8cce67c6..e94d85a8 100644
--- a/pytorch3d/datasets/r2n2/r2n2.py
+++ b/pytorch3d/datasets/r2n2/r2n2.py
@@ -19,8 +19,8 @@ from pytorch3d.renderer import HardPhongShader
 from tabulate import tabulate
 
 from .utils import (
-    BlenderCamera,
     align_bbox,
+    BlenderCamera,
     compute_extrinsic_matrix,
     read_binvox_coords,
     voxelize,
diff --git a/pytorch3d/implicitron/dataset/implicitron_dataset.py b/pytorch3d/implicitron/dataset/implicitron_dataset.py
index 0d5294ad..65fe43a3 100644
--- a/pytorch3d/implicitron/dataset/implicitron_dataset.py
+++ b/pytorch3d/implicitron/dataset/implicitron_dataset.py
@@ -39,7 +39,7 @@ from PIL import Image
 from pytorch3d.io import IO
 from pytorch3d.renderer.camera_utils import join_cameras_as_batch
 from pytorch3d.renderer.cameras import CamerasBase, PerspectiveCameras
-from pytorch3d.structures.pointclouds import Pointclouds, join_pointclouds_as_batch
+from pytorch3d.structures.pointclouds import join_pointclouds_as_batch, Pointclouds
 
 from . import types
 
diff --git a/pytorch3d/implicitron/dataset/visualize.py b/pytorch3d/implicitron/dataset/visualize.py
index 37290ecd..4daa5f45 100644
--- a/pytorch3d/implicitron/dataset/visualize.py
+++ b/pytorch3d/implicitron/dataset/visualize.py
@@ -4,7 +4,7 @@
 # This source code is licensed under the BSD-style license found in the
 # LICENSE file in the root directory of this source tree.
 
-from typing import Optional, Tuple, cast
+from typing import cast, Optional, Tuple
 
 import torch
 from pytorch3d.implicitron.tools.point_cloud_utils import get_rgbd_point_cloud
diff --git a/pytorch3d/implicitron/eval_demo.py b/pytorch3d/implicitron/eval_demo.py
index 150f5a0c..59d27ae3 100644
--- a/pytorch3d/implicitron/eval_demo.py
+++ b/pytorch3d/implicitron/eval_demo.py
@@ -8,7 +8,7 @@
 import copy
 import dataclasses
 import os
-from typing import Optional, cast
+from typing import cast, Optional
 
 import lpips
 import torch
diff --git a/pytorch3d/implicitron/models/implicit_function/neural_radiance_field.py b/pytorch3d/implicitron/models/implicit_function/neural_radiance_field.py
index 019becef..0c6e6e30 100644
--- a/pytorch3d/implicitron/models/implicit_function/neural_radiance_field.py
+++ b/pytorch3d/implicitron/models/implicit_function/neural_radiance_field.py
@@ -11,7 +11,7 @@ from typing import List, Optional
 import torch
 from pytorch3d.common.linear_with_repeat import LinearWithRepeat
 from pytorch3d.implicitron.tools.config import registry
-from pytorch3d.renderer import RayBundle, ray_bundle_to_ray_points
+from pytorch3d.renderer import ray_bundle_to_ray_points, RayBundle
 from pytorch3d.renderer.cameras import CamerasBase
 from pytorch3d.renderer.implicit import HarmonicEmbedding
 
diff --git a/pytorch3d/implicitron/models/implicit_function/scene_representation_networks.py b/pytorch3d/implicitron/models/implicit_function/scene_representation_networks.py
index ce3389e4..faf6fdfe 100644
--- a/pytorch3d/implicitron/models/implicit_function/scene_representation_networks.py
+++ b/pytorch3d/implicitron/models/implicit_function/scene_representation_networks.py
@@ -1,13 +1,13 @@
 # @lint-ignore-every LICENSELINT
 # Adapted from https://github.com/vsitzmann/scene-representation-networks
 # Copyright (c) 2019 Vincent Sitzmann
-from typing import Any, Optional, Tuple, cast
+from typing import Any, cast, Optional, Tuple
 
 import torch
 from pytorch3d.common.linear_with_repeat import LinearWithRepeat
 from pytorch3d.implicitron.third_party import hyperlayers, pytorch_prototyping
 from pytorch3d.implicitron.tools.config import Configurable, registry, run_auto_creation
-from pytorch3d.renderer import RayBundle, ray_bundle_to_ray_points
+from pytorch3d.renderer import ray_bundle_to_ray_points, RayBundle
 from pytorch3d.renderer.cameras import CamerasBase
 from pytorch3d.renderer.implicit import HarmonicEmbedding
 
diff --git a/pytorch3d/implicitron/models/view_pooling/feature_aggregation.py b/pytorch3d/implicitron/models/view_pooling/feature_aggregation.py
index 1ed6b481..9cdde134 100644
--- a/pytorch3d/implicitron/models/view_pooling/feature_aggregation.py
+++ b/pytorch3d/implicitron/models/view_pooling/feature_aggregation.py
@@ -13,7 +13,7 @@ import torch.nn.functional as F
 from pytorch3d.implicitron.models.view_pooling.view_sampling import (
     cameras_points_cartesian_product,
 )
-from pytorch3d.implicitron.tools.config import ReplaceableBase, registry
+from pytorch3d.implicitron.tools.config import registry, ReplaceableBase
 from pytorch3d.ops import wmean
 from pytorch3d.renderer.cameras import CamerasBase
 
diff --git a/pytorch3d/implicitron/tools/eval_video_trajectory.py b/pytorch3d/implicitron/tools/eval_video_trajectory.py
index d9afb873..0c0f65ae 100644
--- a/pytorch3d/implicitron/tools/eval_video_trajectory.py
+++ b/pytorch3d/implicitron/tools/eval_video_trajectory.py
@@ -10,7 +10,7 @@ from typing import Optional, Tuple
 import torch
 from pytorch3d.common.compat import eigh
 from pytorch3d.implicitron.tools.circle_fitting import fit_circle_in_3d
-from pytorch3d.renderer import PerspectiveCameras, look_at_view_transform
+from pytorch3d.renderer import look_at_view_transform, PerspectiveCameras
 from pytorch3d.transforms import Scale
 
 
diff --git a/pytorch3d/implicitron/tools/point_cloud_utils.py b/pytorch3d/implicitron/tools/point_cloud_utils.py
index 756f1229..c1b68374 100644
--- a/pytorch3d/implicitron/tools/point_cloud_utils.py
+++ b/pytorch3d/implicitron/tools/point_cloud_utils.py
@@ -5,7 +5,7 @@
 # LICENSE file in the root directory of this source tree.
 
 
-from typing import Optional, Tuple, cast
+from typing import cast, Optional, Tuple
 
 import torch
 import torch.nn.functional as Fu
diff --git a/pytorch3d/io/experimental_gltf_io.py b/pytorch3d/io/experimental_gltf_io.py
index d2984edd..1dd3d164 100644
--- a/pytorch3d/io/experimental_gltf_io.py
+++ b/pytorch3d/io/experimental_gltf_io.py
@@ -42,18 +42,18 @@ from base64 import b64decode
 from collections import deque
 from enum import IntEnum
 from io import BytesIO
-from typing import Any, BinaryIO, Dict, List, Optional, Tuple, Union, cast
+from typing import Any, BinaryIO, cast, Dict, List, Optional, Tuple, Union
 
 import numpy as np
 import torch
 from iopath.common.file_io import PathManager
 from PIL import Image
-from pytorch3d.io.utils import PathOrStr, _open_file
+from pytorch3d.io.utils import _open_file, PathOrStr
 from pytorch3d.renderer.mesh import TexturesBase, TexturesUV, TexturesVertex
-from pytorch3d.structures import Meshes, join_meshes_as_scene
-from pytorch3d.transforms import Transform3d, quaternion_to_matrix
+from pytorch3d.structures import join_meshes_as_scene, Meshes
+from pytorch3d.transforms import quaternion_to_matrix, Transform3d
 
-from .pluggable_formats import MeshFormatInterpreter, endswith
+from .pluggable_formats import endswith, MeshFormatInterpreter
 
 
 _GLTF_MAGIC = 0x46546C67
diff --git a/pytorch3d/io/obj_io.py b/pytorch3d/io/obj_io.py
index 42571de8..ca6faf41 100644
--- a/pytorch3d/io/obj_io.py
+++ b/pytorch3d/io/obj_io.py
@@ -18,11 +18,11 @@ from iopath.common.file_io import PathManager
 from PIL import Image
 from pytorch3d.common.datatypes import Device
 from pytorch3d.io.mtl_io import load_mtl, make_mesh_texture_atlas
-from pytorch3d.io.utils import PathOrStr, _check_faces_indices, _make_tensor, _open_file
+from pytorch3d.io.utils import _check_faces_indices, _make_tensor, _open_file, PathOrStr
 from pytorch3d.renderer import TexturesAtlas, TexturesUV
-from pytorch3d.structures import Meshes, join_meshes_as_batch
+from pytorch3d.structures import join_meshes_as_batch, Meshes
 
-from .pluggable_formats import MeshFormatInterpreter, endswith
+from .pluggable_formats import endswith, MeshFormatInterpreter
 
 
 # Faces & Aux type returned from load_obj function.
diff --git a/pytorch3d/io/off_io.py b/pytorch3d/io/off_io.py
index 607236f8..aa5e5d1b 100644
--- a/pytorch3d/io/off_io.py
+++ b/pytorch3d/io/off_io.py
@@ -13,16 +13,16 @@ This format is introduced, for example, at
 http://www.geomview.org/docs/html/OFF.html .
 """
 import warnings
-from typing import Optional, Tuple, Union, cast
+from typing import cast, Optional, Tuple, Union
 
 import numpy as np
 import torch
 from iopath.common.file_io import PathManager
-from pytorch3d.io.utils import PathOrStr, _check_faces_indices, _open_file
+from pytorch3d.io.utils import _check_faces_indices, _open_file, PathOrStr
 from pytorch3d.renderer import TexturesAtlas, TexturesVertex
 from pytorch3d.structures import Meshes
 
-from .pluggable_formats import MeshFormatInterpreter, endswith
+from .pluggable_formats import endswith, MeshFormatInterpreter
 
 
 def _is_line_empty(line: Union[str, bytes]) -> bool:
diff --git a/pytorch3d/io/ply_io.py b/pytorch3d/io/ply_io.py
index da803d00..77cd8fbc 100644
--- a/pytorch3d/io/ply_io.py
+++ b/pytorch3d/io/ply_io.py
@@ -21,14 +21,14 @@ from typing import List, Optional, Tuple
 import numpy as np
 import torch
 from iopath.common.file_io import PathManager
-from pytorch3d.io.utils import PathOrStr, _check_faces_indices, _make_tensor, _open_file
+from pytorch3d.io.utils import _check_faces_indices, _make_tensor, _open_file, PathOrStr
 from pytorch3d.renderer import TexturesVertex
 from pytorch3d.structures import Meshes, Pointclouds
 
 from .pluggable_formats import (
+    endswith,
     MeshFormatInterpreter,
     PointcloudFormatInterpreter,
-    endswith,
 )
 
 
diff --git a/pytorch3d/io/utils.py b/pytorch3d/io/utils.py
index 1dd2d586..e0bd796b 100644
--- a/pytorch3d/io/utils.py
+++ b/pytorch3d/io/utils.py
@@ -7,7 +7,7 @@
 import contextlib
 import pathlib
 import warnings
-from typing import IO, ContextManager, Optional, Union
+from typing import ContextManager, IO, Optional, Union
 
 import numpy as np
 import torch
diff --git a/pytorch3d/ops/points_alignment.py b/pytorch3d/ops/points_alignment.py
index eaae3f9d..aa4552db 100644
--- a/pytorch3d/ops/points_alignment.py
+++ b/pytorch3d/ops/points_alignment.py
@@ -5,7 +5,7 @@
 # LICENSE file in the root directory of this source tree.
 
 import warnings
-from typing import TYPE_CHECKING, List, NamedTuple, Optional, Union
+from typing import List, NamedTuple, Optional, TYPE_CHECKING, Union
 
 import torch
 from pytorch3d.ops import knn_points
diff --git a/pytorch3d/ops/utils.py b/pytorch3d/ops/utils.py
index a6fb6d7f..134e49b6 100644
--- a/pytorch3d/ops/utils.py
+++ b/pytorch3d/ops/utils.py
@@ -4,7 +4,7 @@
 # This source code is licensed under the BSD-style license found in the
 # LICENSE file in the root directory of this source tree.
 
-from typing import TYPE_CHECKING, Optional, Tuple, Union
+from typing import Optional, Tuple, TYPE_CHECKING, Union
 
 import torch
 
diff --git a/pytorch3d/renderer/__init__.py b/pytorch3d/renderer/__init__.py
index 2edce601..ef3daf0e 100644
--- a/pytorch3d/renderer/__init__.py
+++ b/pytorch3d/renderer/__init__.py
@@ -11,19 +11,19 @@ from .blending import (
     softmax_rgb_blend,
 )
 from .camera_utils import join_cameras_as_batch, rotate_on_spot
-from .cameras import OpenGLOrthographicCameras  # deprecated
-from .cameras import OpenGLPerspectiveCameras  # deprecated
-from .cameras import SfMOrthographicCameras  # deprecated
-from .cameras import SfMPerspectiveCameras  # deprecated
-from .cameras import (
+from .cameras import (  # deprecated  # deprecated  # deprecated  # deprecated
+    camera_position_from_spherical_angles,
     FoVOrthographicCameras,
     FoVPerspectiveCameras,
-    OrthographicCameras,
-    PerspectiveCameras,
-    camera_position_from_spherical_angles,
     get_world_to_view_transform,
     look_at_rotation,
     look_at_view_transform,
+    OpenGLOrthographicCameras,
+    OpenGLPerspectiveCameras,
+    OrthographicCameras,
+    PerspectiveCameras,
+    SfMOrthographicCameras,
+    SfMPerspectiveCameras,
 )
 from .implicit import (
     AbsorptionOnlyRaymarcher,
@@ -35,22 +35,25 @@ from .implicit import (
     MultinomialRaysampler,
     NDCGridRaysampler,
     NDCMultinomialRaysampler,
+    ray_bundle_to_ray_points,
+    ray_bundle_variables_to_ray_points,
     RayBundle,
     VolumeRenderer,
     VolumeSampler,
-    ray_bundle_to_ray_points,
-    ray_bundle_variables_to_ray_points,
 )
-from .lighting import AmbientLights, DirectionalLights, PointLights, diffuse, specular
+from .lighting import AmbientLights, diffuse, DirectionalLights, PointLights, specular
 from .materials import Materials
 from .mesh import (
+    gouraud_shading,
     HardFlatShader,
     HardGouraudShader,
     HardPhongShader,
     MeshRasterizer,
     MeshRenderer,
     MeshRendererWithFragments,
+    phong_shading,
     RasterizationSettings,
+    rasterize_meshes,
     SoftGouraudShader,
     SoftPhongShader,
     SoftSilhouetteShader,
@@ -58,9 +61,6 @@ from .mesh import (
     TexturesAtlas,
     TexturesUV,
     TexturesVertex,
-    gouraud_shading,
-    phong_shading,
-    rasterize_meshes,
 )
 from .points import (
     AlphaCompositor,
@@ -72,10 +72,10 @@ from .points import (
     rasterize_points,
 )
 from .utils import (
-    TensorProperties,
     convert_to_tensors_and_broadcast,
     ndc_grid_sample,
     ndc_to_grid_sample_coords,
+    TensorProperties,
 )
 
 
diff --git a/pytorch3d/renderer/implicit/__init__.py b/pytorch3d/renderer/implicit/__init__.py
index f3ec515e..bb617df8 100644
--- a/pytorch3d/renderer/implicit/__init__.py
+++ b/pytorch3d/renderer/implicit/__init__.py
@@ -15,9 +15,9 @@ from .raysampling import (
 )
 from .renderer import ImplicitRenderer, VolumeRenderer, VolumeSampler
 from .utils import (
-    RayBundle,
     ray_bundle_to_ray_points,
     ray_bundle_variables_to_ray_points,
+    RayBundle,
 )
 
 
diff --git a/pytorch3d/renderer/lighting.py b/pytorch3d/renderer/lighting.py
index 76fbe3a7..3ca81ca7 100644
--- a/pytorch3d/renderer/lighting.py
+++ b/pytorch3d/renderer/lighting.py
@@ -9,7 +9,7 @@ import torch
 import torch.nn.functional as F
 
 from ..common.datatypes import Device
-from .utils import TensorProperties, convert_to_tensors_and_broadcast
+from .utils import convert_to_tensors_and_broadcast, TensorProperties
 
 
 def diffuse(normals, color, direction) -> torch.Tensor:
diff --git a/pytorch3d/renderer/mesh/__init__.py b/pytorch3d/renderer/mesh/__init__.py
index ff28349e..e9e12cdc 100644
--- a/pytorch3d/renderer/mesh/__init__.py
+++ b/pytorch3d/renderer/mesh/__init__.py
@@ -6,16 +6,15 @@
 
 
 from .clip import (
+    clip_faces,
     ClipFrustum,
     ClippedFaces,
-    clip_faces,
     convert_clipped_rasterization_to_original_faces,
 )
 from .rasterize_meshes import rasterize_meshes
 from .rasterizer import MeshRasterizer, RasterizationSettings
 from .renderer import MeshRenderer, MeshRendererWithFragments
-from .shader import TexturedSoftPhongShader  # DEPRECATED
-from .shader import (
+from .shader import (  # DEPRECATED
     BlendParams,
     HardFlatShader,
     HardGouraudShader,
@@ -23,10 +22,16 @@ from .shader import (
     SoftGouraudShader,
     SoftPhongShader,
     SoftSilhouetteShader,
+    TexturedSoftPhongShader,
 )
 from .shading import gouraud_shading, phong_shading
-from .textures import Textures  # DEPRECATED
-from .textures import TexturesAtlas, TexturesBase, TexturesUV, TexturesVertex
+from .textures import (  # DEPRECATED
+    Textures,
+    TexturesAtlas,
+    TexturesBase,
+    TexturesUV,
+    TexturesVertex,
+)
 
 
 __all__ = [k for k in globals().keys() if not k.startswith("_")]
diff --git a/pytorch3d/renderer/mesh/rasterize_meshes.py b/pytorch3d/renderer/mesh/rasterize_meshes.py
index c0f9f397..68fb3ed5 100644
--- a/pytorch3d/renderer/mesh/rasterize_meshes.py
+++ b/pytorch3d/renderer/mesh/rasterize_meshes.py
@@ -12,8 +12,8 @@ import torch
 from pytorch3d import _C
 
 from .clip import (
-    ClipFrustum,
     clip_faces,
+    ClipFrustum,
     convert_clipped_rasterization_to_original_faces,
 )
 
diff --git a/pytorch3d/structures/__init__.py b/pytorch3d/structures/__init__.py
index 859ef54b..37986ad7 100644
--- a/pytorch3d/structures/__init__.py
+++ b/pytorch3d/structures/__init__.py
@@ -4,7 +4,7 @@
 # This source code is licensed under the BSD-style license found in the
 # LICENSE file in the root directory of this source tree.
 
-from .meshes import Meshes, join_meshes_as_batch, join_meshes_as_scene
+from .meshes import join_meshes_as_batch, join_meshes_as_scene, Meshes
 from .pointclouds import Pointclouds
 from .utils import list_to_packed, list_to_padded, packed_to_list, padded_to_list
 from .volumes import Volumes
diff --git a/pytorch3d/vis/plotly_vis.py b/pytorch3d/vis/plotly_vis.py
index f0e438ec..b6e33e0c 100644
--- a/pytorch3d/vis/plotly_vis.py
+++ b/pytorch3d/vis/plotly_vis.py
@@ -11,14 +11,14 @@ import plotly.graph_objects as go
 import torch
 from plotly.subplots import make_subplots
 from pytorch3d.renderer import (
+    ray_bundle_to_ray_points,
     RayBundle,
     TexturesAtlas,
     TexturesVertex,
-    ray_bundle_to_ray_points,
 )
 from pytorch3d.renderer.camera_utils import camera_to_eye_at_up
 from pytorch3d.renderer.cameras import CamerasBase
-from pytorch3d.structures import Meshes, Pointclouds, join_meshes_as_scene
+from pytorch3d.structures import join_meshes_as_scene, Meshes, Pointclouds
 
 
 Struct = Union[CamerasBase, Meshes, Pointclouds, RayBundle]
diff --git a/setup.py b/setup.py
index 87902b57..f15bb70f 100755
--- a/setup.py
+++ b/setup.py
@@ -13,7 +13,7 @@ from typing import List, Optional
 
 import torch
 from setuptools import find_packages, setup
-from torch.utils.cpp_extension import CUDA_HOME, CppExtension, CUDAExtension
+from torch.utils.cpp_extension import CppExtension, CUDA_HOME, CUDAExtension
 
 
 def get_existing_ccbin(nvcc_args: List[str]) -> Optional[str]:
diff --git a/tests/implicitron/test_config.py b/tests/implicitron/test_config.py
index 2be4595f..7076c656 100644
--- a/tests/implicitron/test_config.py
+++ b/tests/implicitron/test_config.py
@@ -13,18 +13,18 @@ from typing import Any, List, Optional, Set, Tuple
 
 from omegaconf import DictConfig, ListConfig, OmegaConf, ValidationError
 from pytorch3d.implicitron.tools.config import (
-    Configurable,
-    ReplaceableBase,
     _get_type_to_process,
     _is_actually_dataclass,
     _ProcessType,
     _Registry,
+    Configurable,
     enable_get_default_args,
     expand_args_fields,
     get_default_args,
     get_default_args_field,
     registry,
     remove_unused_components,
+    ReplaceableBase,
     run_auto_creation,
 )
 
diff --git a/tests/implicitron/test_eval_cameras.py b/tests/implicitron/test_eval_cameras.py
index 6ef3aa43..e4e014b3 100644
--- a/tests/implicitron/test_eval_cameras.py
+++ b/tests/implicitron/test_eval_cameras.py
@@ -11,7 +11,7 @@ import torch
 from pytorch3d.implicitron.tools.eval_video_trajectory import (
     generate_eval_video_cameras,
 )
-from pytorch3d.renderer.cameras import PerspectiveCameras, look_at_view_transform
+from pytorch3d.renderer.cameras import look_at_view_transform, PerspectiveCameras
 from pytorch3d.transforms import axis_angle_to_matrix
 
 
diff --git a/tests/implicitron/test_forward_pass.py b/tests/implicitron/test_forward_pass.py
index eda733d6..c7406a6b 100644
--- a/tests/implicitron/test_forward_pass.py
+++ b/tests/implicitron/test_forward_pass.py
@@ -10,7 +10,7 @@ import torch
 from pytorch3d.implicitron.models.base import GenericModel
 from pytorch3d.implicitron.models.renderer.base import EvaluationMode
 from pytorch3d.implicitron.tools.config import expand_args_fields
-from pytorch3d.renderer.cameras import PerspectiveCameras, look_at_view_transform
+from pytorch3d.renderer.cameras import look_at_view_transform, PerspectiveCameras
 
 
 class TestGenericModel(unittest.TestCase):
diff --git a/tests/test_ball_query.py b/tests/test_ball_query.py
index 202e08ad..0f58a191 100644
--- a/tests/test_ball_query.py
+++ b/tests/test_ball_query.py
@@ -8,7 +8,7 @@ import unittest
 from itertools import product
 
 import torch
-from common_testing import TestCaseMixin, get_random_cuda_device
+from common_testing import get_random_cuda_device, TestCaseMixin
 from pytorch3d.ops import sample_points_from_meshes
 from pytorch3d.ops.ball_query import ball_query
 from pytorch3d.ops.knn import _KNN
diff --git a/tests/test_camera_conversions.py b/tests/test_camera_conversions.py
index 47c26665..15017a25 100644
--- a/tests/test_camera_conversions.py
+++ b/tests/test_camera_conversions.py
@@ -10,7 +10,7 @@ import unittest
 
 import numpy as np
 import torch
-from common_testing import TestCaseMixin, get_tests_dir
+from common_testing import get_tests_dir, TestCaseMixin
 from pytorch3d.ops import eyes
 from pytorch3d.renderer.points.pulsar import Renderer as PulsarRenderer
 from pytorch3d.transforms import so3_exp_map, so3_log_map
diff --git a/tests/test_camera_utils.py b/tests/test_camera_utils.py
index e8638ebd..32d87c2a 100644
--- a/tests/test_camera_utils.py
+++ b/tests/test_camera_utils.py
@@ -11,9 +11,9 @@ import torch
 from common_testing import TestCaseMixin
 from pytorch3d.renderer.camera_utils import camera_to_eye_at_up, rotate_on_spot
 from pytorch3d.renderer.cameras import (
-    PerspectiveCameras,
     get_world_to_view_transform,
     look_at_view_transform,
+    PerspectiveCameras,
 )
 from pytorch3d.transforms import axis_angle_to_matrix
 from torch.nn.functional import normalize
diff --git a/tests/test_cameras.py b/tests/test_cameras.py
index f2cb14b5..d3da872f 100644
--- a/tests/test_cameras.py
+++ b/tests/test_cameras.py
@@ -39,19 +39,19 @@ import torch
 from common_testing import TestCaseMixin
 from pytorch3d.renderer.camera_utils import join_cameras_as_batch
 from pytorch3d.renderer.cameras import (
+    camera_position_from_spherical_angles,
     CamerasBase,
     FoVOrthographicCameras,
     FoVPerspectiveCameras,
+    get_world_to_view_transform,
+    look_at_rotation,
+    look_at_view_transform,
     OpenGLOrthographicCameras,
     OpenGLPerspectiveCameras,
     OrthographicCameras,
     PerspectiveCameras,
     SfMOrthographicCameras,
     SfMPerspectiveCameras,
-    camera_position_from_spherical_angles,
-    get_world_to_view_transform,
-    look_at_rotation,
-    look_at_view_transform,
 )
 from pytorch3d.transforms import Transform3d
 from pytorch3d.transforms.rotation_conversions import random_rotations
diff --git a/tests/test_chamfer.py b/tests/test_chamfer.py
index 0231f41f..55efe36e 100644
--- a/tests/test_chamfer.py
+++ b/tests/test_chamfer.py
@@ -10,7 +10,7 @@ from collections import namedtuple
 import numpy as np
 import torch
 import torch.nn.functional as F
-from common_testing import TestCaseMixin, get_random_cuda_device
+from common_testing import get_random_cuda_device, TestCaseMixin
 from pytorch3d.loss import chamfer_distance
 from pytorch3d.structures.pointclouds import Pointclouds
 
diff --git a/tests/test_compositing.py b/tests/test_compositing.py
index 60828dd7..1d474da2 100644
--- a/tests/test_compositing.py
+++ b/tests/test_compositing.py
@@ -7,7 +7,7 @@
 import unittest
 
 import torch
-from common_testing import TestCaseMixin, get_random_cuda_device
+from common_testing import get_random_cuda_device, TestCaseMixin
 from pytorch3d.renderer.compositing import (
     alpha_composite,
     norm_weighted_sum,
diff --git a/tests/test_face_areas_normals.py b/tests/test_face_areas_normals.py
index 7fa22151..0b3b0fdc 100644
--- a/tests/test_face_areas_normals.py
+++ b/tests/test_face_areas_normals.py
@@ -8,7 +8,7 @@
 import unittest
 
 import torch
-from common_testing import TestCaseMixin, get_random_cuda_device
+from common_testing import get_random_cuda_device, TestCaseMixin
 from pytorch3d.ops import mesh_face_areas_normals
 from pytorch3d.structures.meshes import Meshes
 
diff --git a/tests/test_graph_conv.py b/tests/test_graph_conv.py
index d853c66a..c4c16d60 100644
--- a/tests/test_graph_conv.py
+++ b/tests/test_graph_conv.py
@@ -8,9 +8,9 @@ import unittest
 
 import torch
 import torch.nn as nn
-from common_testing import TestCaseMixin, get_random_cuda_device
+from common_testing import get_random_cuda_device, TestCaseMixin
 from pytorch3d import _C
-from pytorch3d.ops.graph_conv import GraphConv, gather_scatter, gather_scatter_python
+from pytorch3d.ops.graph_conv import gather_scatter, gather_scatter_python, GraphConv
 from pytorch3d.structures.meshes import Meshes
 from pytorch3d.utils import ico_sphere
 
diff --git a/tests/test_interpolate_face_attributes.py b/tests/test_interpolate_face_attributes.py
index 17b1ec06..dc67e9a1 100644
--- a/tests/test_interpolate_face_attributes.py
+++ b/tests/test_interpolate_face_attributes.py
@@ -7,7 +7,7 @@
 import unittest
 
 import torch
-from common_testing import TestCaseMixin, get_random_cuda_device
+from common_testing import get_random_cuda_device, TestCaseMixin
 from pytorch3d.ops.interp_face_attrs import (
     interpolate_face_attributes,
     interpolate_face_attributes_python,
diff --git a/tests/test_io_gltf.py b/tests/test_io_gltf.py
index c6528507..d1fa34a0 100644
--- a/tests/test_io_gltf.py
+++ b/tests/test_io_gltf.py
@@ -9,7 +9,7 @@ from math import radians
 
 import numpy as np
 import torch
-from common_testing import TestCaseMixin, get_pytorch3d_dir, get_tests_dir
+from common_testing import get_pytorch3d_dir, get_tests_dir, TestCaseMixin
 from PIL import Image
 from pytorch3d.io import IO
 from pytorch3d.io.experimental_gltf_io import MeshGlbFormat
@@ -17,9 +17,9 @@ from pytorch3d.renderer import (
     AmbientLights,
     BlendParams,
     FoVPerspectiveCameras,
+    look_at_view_transform,
     PointLights,
     RasterizationSettings,
-    look_at_view_transform,
     rotate_on_spot,
 )
 from pytorch3d.renderer.mesh import (
diff --git a/tests/test_io_obj.py b/tests/test_io_obj.py
index 0d9e54f8..c47a58ad 100644
--- a/tests/test_io_obj.py
+++ b/tests/test_io_obj.py
@@ -14,10 +14,10 @@ from tempfile import NamedTemporaryFile, TemporaryDirectory
 
 import torch
 from common_testing import (
-    TestCaseMixin,
     get_pytorch3d_dir,
     get_tests_dir,
     load_rgb_image,
+    TestCaseMixin,
 )
 from iopath.common.file_io import PathManager
 from pytorch3d.io import IO, load_obj, load_objs_as_meshes, save_obj
@@ -27,7 +27,7 @@ from pytorch3d.io.mtl_io import (
     _parse_mtl,
 )
 from pytorch3d.renderer import TexturesAtlas, TexturesUV, TexturesVertex
-from pytorch3d.structures import Meshes, join_meshes_as_batch
+from pytorch3d.structures import join_meshes_as_batch, Meshes
 from pytorch3d.utils import torus
 
 
diff --git a/tests/test_iou_box3d.py b/tests/test_iou_box3d.py
index b934f576..bd25d3cd 100644
--- a/tests/test_iou_box3d.py
+++ b/tests/test_iou_box3d.py
@@ -11,7 +11,7 @@ from typing import List, Tuple, Union
 
 import torch
 import torch.nn.functional as F
-from common_testing import TestCaseMixin, get_random_cuda_device, get_tests_dir
+from common_testing import get_random_cuda_device, get_tests_dir, TestCaseMixin
 from pytorch3d.io import save_obj
 from pytorch3d.ops.iou_box3d import _box_planes, _box_triangles, box3d_overlap
 from pytorch3d.transforms.rotation_conversions import random_rotation
diff --git a/tests/test_knn.py b/tests/test_knn.py
index 6318ff0c..d3c56681 100644
--- a/tests/test_knn.py
+++ b/tests/test_knn.py
@@ -8,7 +8,7 @@ import unittest
 from itertools import product
 
 import torch
-from common_testing import TestCaseMixin, get_random_cuda_device
+from common_testing import get_random_cuda_device, TestCaseMixin
 from pytorch3d.ops.knn import _KNN, knn_gather, knn_points
 
 
diff --git a/tests/test_laplacian_matrices.py b/tests/test_laplacian_matrices.py
index d64b021a..088efdf1 100644
--- a/tests/test_laplacian_matrices.py
+++ b/tests/test_laplacian_matrices.py
@@ -7,7 +7,7 @@
 import unittest
 
 import torch
-from common_testing import TestCaseMixin, get_random_cuda_device
+from common_testing import get_random_cuda_device, TestCaseMixin
 from pytorch3d.ops import cot_laplacian, laplacian, norm_laplacian
 from pytorch3d.structures.meshes import Meshes
 
diff --git a/tests/test_marching_cubes.py b/tests/test_marching_cubes.py
index b979049a..2b8370f4 100644
--- a/tests/test_marching_cubes.py
+++ b/tests/test_marching_cubes.py
@@ -9,7 +9,7 @@ import pickle
 import unittest
 
 import torch
-from common_testing import TestCaseMixin, get_tests_dir
+from common_testing import get_tests_dir, TestCaseMixin
 from pytorch3d.ops.marching_cubes import marching_cubes_naive
 
 
diff --git a/tests/test_mesh_filtering.py b/tests/test_mesh_filtering.py
index 91fecc29..285d89e5 100644
--- a/tests/test_mesh_filtering.py
+++ b/tests/test_mesh_filtering.py
@@ -8,7 +8,7 @@
 import unittest
 
 import torch
-from common_testing import TestCaseMixin, get_random_cuda_device
+from common_testing import get_random_cuda_device, TestCaseMixin
 from pytorch3d.ops import taubin_smoothing
 from pytorch3d.structures import Meshes
 from pytorch3d.utils import ico_sphere
diff --git a/tests/test_packed_to_padded.py b/tests/test_packed_to_padded.py
index b5b469e5..6114366e 100644
--- a/tests/test_packed_to_padded.py
+++ b/tests/test_packed_to_padded.py
@@ -7,7 +7,7 @@
 import unittest
 
 import torch
-from common_testing import TestCaseMixin, get_random_cuda_device
+from common_testing import get_random_cuda_device, TestCaseMixin
 from pytorch3d.ops import packed_to_padded, padded_to_packed
 from pytorch3d.structures.meshes import Meshes
 
diff --git a/tests/test_point_mesh_distance.py b/tests/test_point_mesh_distance.py
index 2281d1fd..cf26c159 100644
--- a/tests/test_point_mesh_distance.py
+++ b/tests/test_point_mesh_distance.py
@@ -8,10 +8,10 @@ import unittest
 
 import numpy as np
 import torch
-from common_testing import TestCaseMixin, get_random_cuda_device
+from common_testing import get_random_cuda_device, TestCaseMixin
 from pytorch3d import _C
 from pytorch3d.loss import point_mesh_edge_distance, point_mesh_face_distance
-from pytorch3d.structures import Meshes, Pointclouds, packed_to_list
+from pytorch3d.structures import Meshes, packed_to_list, Pointclouds
 
 
 class TestPointMeshDistance(TestCaseMixin, unittest.TestCase):
diff --git a/tests/test_pointclouds.py b/tests/test_pointclouds.py
index 52efee18..b2780681 100644
--- a/tests/test_pointclouds.py
+++ b/tests/test_pointclouds.py
@@ -12,7 +12,7 @@ import numpy as np
 import torch
 from common_testing import TestCaseMixin
 from pytorch3d.structures import utils as struct_utils
-from pytorch3d.structures.pointclouds import Pointclouds, join_pointclouds_as_batch
+from pytorch3d.structures.pointclouds import join_pointclouds_as_batch, Pointclouds
 
 
 class TestPointclouds(TestCaseMixin, unittest.TestCase):
diff --git a/tests/test_points_alignment.py b/tests/test_points_alignment.py
index c6f50400..25c43be8 100644
--- a/tests/test_points_alignment.py
+++ b/tests/test_points_alignment.py
@@ -8,7 +8,7 @@ import unittest
 
 import numpy as np
 import torch
-from common_testing import TestCaseMixin, get_tests_dir
+from common_testing import get_tests_dir, TestCaseMixin
 from pytorch3d.ops import points_alignment
 from pytorch3d.structures.pointclouds import Pointclouds
 from pytorch3d.transforms import rotation_conversions
diff --git a/tests/test_r2n2.py b/tests/test_r2n2.py
index 46dd6e03..5b1308d1 100644
--- a/tests/test_r2n2.py
+++ b/tests/test_r2n2.py
@@ -13,19 +13,19 @@ import unittest
 
 import numpy as np
 import torch
-from common_testing import TestCaseMixin, get_tests_dir, load_rgb_image
+from common_testing import get_tests_dir, load_rgb_image, TestCaseMixin
 from PIL import Image
 from pytorch3d.datasets import (
-    R2N2,
     BlenderCamera,
     collate_batched_R2N2,
+    R2N2,
     render_cubified_voxels,
 )
 from pytorch3d.renderer import (
     FoVPerspectiveCameras,
+    look_at_view_transform,
     PointLights,
     RasterizationSettings,
-    look_at_view_transform,
 )
 from pytorch3d.renderer.cameras import get_world_to_view_transform
 from pytorch3d.transforms import Transform3d
diff --git a/tests/test_rasterize_meshes.py b/tests/test_rasterize_meshes.py
index a5094fc7..8fada036 100644
--- a/tests/test_rasterize_meshes.py
+++ b/tests/test_rasterize_meshes.py
@@ -8,7 +8,7 @@ import functools
 import unittest
 
 import torch
-from common_testing import TestCaseMixin, get_random_cuda_device
+from common_testing import get_random_cuda_device, TestCaseMixin
 from pytorch3d import _C
 from pytorch3d.renderer import FoVPerspectiveCameras, look_at_view_transform
 from pytorch3d.renderer.mesh import MeshRasterizer, RasterizationSettings
diff --git a/tests/test_rasterize_points.py b/tests/test_rasterize_points.py
index 01ffd64d..09d4632e 100644
--- a/tests/test_rasterize_points.py
+++ b/tests/test_rasterize_points.py
@@ -9,7 +9,7 @@ import unittest
 
 import numpy as np
 import torch
-from common_testing import TestCaseMixin, get_random_cuda_device
+from common_testing import get_random_cuda_device, TestCaseMixin
 from pytorch3d import _C
 from pytorch3d.renderer.points.rasterize_points import (
     _format_radius,
diff --git a/tests/test_rasterize_rectangle_images.py b/tests/test_rasterize_rectangle_images.py
index d57f6044..c67ae865 100644
--- a/tests/test_rasterize_rectangle_images.py
+++ b/tests/test_rasterize_rectangle_images.py
@@ -10,10 +10,10 @@ from itertools import product
 import numpy as np
 import torch
 from common_testing import (
-    TestCaseMixin,
     get_pytorch3d_dir,
     get_tests_dir,
     load_rgb_image,
+    TestCaseMixin,
 )
 from PIL import Image
 from pytorch3d.io import load_obj
diff --git a/tests/test_render_implicit.py b/tests/test_render_implicit.py
index 60ca2d23..62d6ee8c 100644
--- a/tests/test_render_implicit.py
+++ b/tests/test_render_implicit.py
@@ -21,10 +21,10 @@ from pytorch3d.renderer import (
     NDCMultinomialRaysampler,
     PointLights,
     RasterizationSettings,
+    ray_bundle_to_ray_points,
     RayBundle,
     SoftPhongShader,
     TexturesVertex,
-    ray_bundle_to_ray_points,
 )
 from pytorch3d.structures import Meshes
 from pytorch3d.utils import ico_sphere
diff --git a/tests/test_render_meshes.py b/tests/test_render_meshes.py
index ff6c8bf4..5b033831 100644
--- a/tests/test_render_meshes.py
+++ b/tests/test_render_meshes.py
@@ -15,19 +15,19 @@ from collections import namedtuple
 import numpy as np
 import torch
 from common_testing import (
-    TestCaseMixin,
     get_pytorch3d_dir,
     get_tests_dir,
     load_rgb_image,
+    TestCaseMixin,
 )
 from PIL import Image
 from pytorch3d.io import load_obj
 from pytorch3d.renderer.cameras import (
     FoVOrthographicCameras,
     FoVPerspectiveCameras,
+    look_at_view_transform,
     OrthographicCameras,
     PerspectiveCameras,
-    look_at_view_transform,
 )
 from pytorch3d.renderer.lighting import AmbientLights, PointLights
 from pytorch3d.renderer.materials import Materials
@@ -44,9 +44,9 @@ from pytorch3d.renderer.mesh.shader import (
     TexturedSoftPhongShader,
 )
 from pytorch3d.structures.meshes import (
-    Meshes,
     join_meshes_as_batch,
     join_meshes_as_scene,
+    Meshes,
 )
 from pytorch3d.utils.ico_sphere import ico_sphere
 from pytorch3d.utils.torus import torus
diff --git a/tests/test_render_meshes_clipped.py b/tests/test_render_meshes_clipped.py
index 75d35dde..68954ac5 100644
--- a/tests/test_render_meshes_clipped.py
+++ b/tests/test_render_meshes_clipped.py
@@ -17,19 +17,19 @@ import unittest
 import imageio
 import numpy as np
 import torch
-from common_testing import TestCaseMixin, get_tests_dir, load_rgb_image
+from common_testing import get_tests_dir, load_rgb_image, TestCaseMixin
 from pytorch3d.io import save_obj
 from pytorch3d.renderer.cameras import (
     FoVPerspectiveCameras,
-    PerspectiveCameras,
     look_at_view_transform,
+    PerspectiveCameras,
 )
 from pytorch3d.renderer.lighting import PointLights
 from pytorch3d.renderer.mesh import (
-    ClipFrustum,
-    TexturesUV,
     clip_faces,
+    ClipFrustum,
     convert_clipped_rasterization_to_original_faces,
+    TexturesUV,
 )
 from pytorch3d.renderer.mesh.rasterize_meshes import _RasterizeFaceVerts
 from pytorch3d.renderer.mesh.rasterizer import MeshRasterizer, RasterizationSettings
diff --git a/tests/test_render_multigpu.py b/tests/test_render_multigpu.py
index 2e62dd61..161101c8 100644
--- a/tests/test_render_multigpu.py
+++ b/tests/test_render_multigpu.py
@@ -8,7 +8,7 @@ import unittest
 
 import torch
 import torch.nn as nn
-from common_testing import TestCaseMixin, get_random_cuda_device
+from common_testing import get_random_cuda_device, TestCaseMixin
 from pytorch3d.renderer import (
     AlphaCompositor,
     BlendParams,
diff --git a/tests/test_render_points.py b/tests/test_render_points.py
index f2ff9bb3..7278b7c9 100644
--- a/tests/test_render_points.py
+++ b/tests/test_render_points.py
@@ -15,18 +15,18 @@ from os import path
 import numpy as np
 import torch
 from common_testing import (
-    TestCaseMixin,
     get_pytorch3d_dir,
     get_tests_dir,
     load_rgb_image,
+    TestCaseMixin,
 )
 from PIL import Image
 from pytorch3d.renderer.cameras import (
     FoVOrthographicCameras,
     FoVPerspectiveCameras,
+    look_at_view_transform,
     OrthographicCameras,
     PerspectiveCameras,
-    look_at_view_transform,
 )
 from pytorch3d.renderer.compositing import alpha_composite, norm_weighted_sum
 from pytorch3d.renderer.points import (
diff --git a/tests/test_rendering_utils.py b/tests/test_rendering_utils.py
index 3a7c668d..a62fc891 100644
--- a/tests/test_rendering_utils.py
+++ b/tests/test_rendering_utils.py
@@ -20,9 +20,9 @@ from pytorch3d.renderer import (
     PointsRenderer,
 )
 from pytorch3d.renderer.utils import (
-    TensorProperties,
     ndc_grid_sample,
     ndc_to_grid_sample_coords,
+    TensorProperties,
 )
 from pytorch3d.structures import Pointclouds
 
diff --git a/tests/test_sample_farthest_points.py b/tests/test_sample_farthest_points.py
index f5348d48..75ec389c 100644
--- a/tests/test_sample_farthest_points.py
+++ b/tests/test_sample_farthest_points.py
@@ -9,10 +9,10 @@ import unittest
 import numpy as np
 import torch
 from common_testing import (
-    TestCaseMixin,
     get_pytorch3d_dir,
     get_random_cuda_device,
     get_tests_dir,
+    TestCaseMixin,
 )
 from pytorch3d.io import load_obj
 from pytorch3d.ops.sample_farthest_points import (
diff --git a/tests/test_sample_points_from_meshes.py b/tests/test_sample_points_from_meshes.py
index 4069cb37..c0f3bddd 100644
--- a/tests/test_sample_points_from_meshes.py
+++ b/tests/test_sample_points_from_meshes.py
@@ -10,10 +10,10 @@ import unittest
 import numpy as np
 import torch
 from common_testing import (
-    TestCaseMixin,
     get_pytorch3d_dir,
     get_random_cuda_device,
     get_tests_dir,
+    TestCaseMixin,
 )
 from PIL import Image
 from pytorch3d.io import load_objs_as_meshes
diff --git a/tests/test_shader.py b/tests/test_shader.py
index 1712dacb..5512f6e2 100644
--- a/tests/test_shader.py
+++ b/tests/test_shader.py
@@ -8,7 +8,7 @@ import unittest
 
 import torch
 from common_testing import TestCaseMixin
-from pytorch3d.renderer.cameras import PerspectiveCameras, look_at_view_transform
+from pytorch3d.renderer.cameras import look_at_view_transform, PerspectiveCameras
 from pytorch3d.renderer.mesh.rasterizer import Fragments
 from pytorch3d.renderer.mesh.shader import (
     HardFlatShader,
diff --git a/tests/test_shapenet_core.py b/tests/test_shapenet_core.py
index ce8dfa57..bc658266 100644
--- a/tests/test_shapenet_core.py
+++ b/tests/test_shapenet_core.py
@@ -12,14 +12,14 @@ import unittest
 
 import numpy as np
 import torch
-from common_testing import TestCaseMixin, get_tests_dir, load_rgb_image
+from common_testing import get_tests_dir, load_rgb_image, TestCaseMixin
 from PIL import Image
-from pytorch3d.datasets import ShapeNetCore, collate_batched_meshes
+from pytorch3d.datasets import collate_batched_meshes, ShapeNetCore
 from pytorch3d.renderer import (
     FoVPerspectiveCameras,
+    look_at_view_transform,
     PointLights,
     RasterizationSettings,
-    look_at_view_transform,
 )
 from torch.utils.data import DataLoader
 
diff --git a/tests/test_symeig3x3.py b/tests/test_symeig3x3.py
index 283d5278..f8f5e445 100644
--- a/tests/test_symeig3x3.py
+++ b/tests/test_symeig3x3.py
@@ -8,7 +8,7 @@
 import unittest
 
 import torch
-from common_testing import TestCaseMixin, get_random_cuda_device
+from common_testing import get_random_cuda_device, TestCaseMixin
 from pytorch3d.common.workaround import symeig3x3
 from pytorch3d.transforms.rotation_conversions import random_rotations