apply import merging for fbcode/vision/fair (2 of 2)

Summary:
Applies new import merging and sorting from µsort v1.0.

When merging imports, µsort will make a best-effort to move associated
comments to match merged elements, but there are known limitations due to
the diynamic nature of Python and developer tooling. These changes should
not produce any dangerous runtime changes, but may require touch-ups to
satisfy linters and other tooling.

Note that µsort uses case-insensitive, lexicographical sorting, which
results in a different ordering compared to isort. This provides a more
consistent sorting order, matching the case-insensitive order used when
sorting import statements by module name, and ensures that "frog", "FROG",
and "Frog" always sort next to each other.

For details on µsort's sorting and merging semantics, see the user guide:
https://usort.readthedocs.io/en/stable/guide.html#sorting

Reviewed By: bottler

Differential Revision: D35553814

fbshipit-source-id: be49bdb6a4c25264ff8d4db3a601f18736d17be1

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