diff --git a/tests/pulsar/create_multiview.py b/tests/pulsar/create_multiview.py
index e060c69c..c74c93fe 100644
--- a/tests/pulsar/create_multiview.py
+++ b/tests/pulsar/create_multiview.py
@@ -11,15 +11,15 @@ sys.path.insert(0, path.join(path.dirname(__file__), "..", ".."))
 
 def create_multiview():
     """Test multiview optimization."""
-    from pytorch3d.renderer.points.pulsar import Renderer
-    import torch
-    from torch import nn
     import imageio
-    from torch.autograd import Variable
 
     # import cv2
     # import skvideo.io
     import numpy as np
+    import torch
+    from pytorch3d.renderer.points.pulsar import Renderer
+    from torch import nn
+    from torch.autograd import Variable
 
     # Constructor.
     n_points = 10
diff --git a/tests/pulsar/test_channels.py b/tests/pulsar/test_channels.py
index 9c6922f7..2913e8b0 100644
--- a/tests/pulsar/test_channels.py
+++ b/tests/pulsar/test_channels.py
@@ -24,8 +24,8 @@ class TestChannels(TestCaseMixin, unittest.TestCase):
 
     def test_basic(self):
         """Basic forward test."""
-        from pytorch3d.renderer.points.pulsar import Renderer
         import torch
+        from pytorch3d.renderer.points.pulsar import Renderer
 
         n_points = 10
         width = 1_000
diff --git a/tests/test_cameras.py b/tests/test_cameras.py
index c1ff86bc..901d75b3 100644
--- a/tests/test_cameras.py
+++ b/tests/test_cameras.py
@@ -32,10 +32,6 @@ import unittest
 import numpy as np
 import torch
 from common_testing import TestCaseMixin
-from pytorch3d.renderer.cameras import OpenGLOrthographicCameras  # deprecated
-from pytorch3d.renderer.cameras import OpenGLPerspectiveCameras  # deprecated
-from pytorch3d.renderer.cameras import SfMOrthographicCameras  # deprecated
-from pytorch3d.renderer.cameras import SfMPerspectiveCameras  # deprecated
 from pytorch3d.renderer.cameras import (
     CamerasBase,
     FoVOrthographicCameras,
@@ -47,6 +43,10 @@ from pytorch3d.renderer.cameras import (
     look_at_rotation,
     look_at_view_transform,
 )
+from pytorch3d.renderer.cameras import OpenGLOrthographicCameras  # deprecated
+from pytorch3d.renderer.cameras import OpenGLPerspectiveCameras  # deprecated
+from pytorch3d.renderer.cameras import SfMOrthographicCameras  # deprecated
+from pytorch3d.renderer.cameras import SfMPerspectiveCameras  # deprecated
 from pytorch3d.transforms import Transform3d
 from pytorch3d.transforms.rotation_conversions import random_rotations
 from pytorch3d.transforms.so3 import so3_exponential_map
diff --git a/tests/test_points_normals.py b/tests/test_points_normals.py
index 1d09ee93..bd20ac1b 100644
--- a/tests/test_points_normals.py
+++ b/tests/test_points_normals.py
@@ -137,6 +137,7 @@ class TestPCLNormals(TestCaseMixin, unittest.TestCase):
 
                     if DEBUG and run_idx == 0 and not use_pointclouds:
                         import os
+
                         from pytorch3d.io.ply_io import save_ply
 
                         # export to .ply