sorting imports on save; cleanup imports sorting; add isort check (#207)

tests/cameras/test_rays.py

@@ -4,6 +4,7 @@ Test the ray classes.
 
 import pytest
 import torch
+
 from nerfactory.cameras.rays import Frustums
 
 

tests/fields/modules/test_encodings.py

@@ -3,6 +3,7 @@ Encoding Tests
 """
 import pytest
 import torch
+
 from nerfactory.fields.modules import encoding
 
 

tests/fields/modules/test_field_outputs.py

@@ -1,9 +1,9 @@
 """
 Field output tests
 """
+import pytest
 import torch
 from torch import nn
-import pytest
 
 from nerfactory.fields.modules.field_heads import (
     DensityFieldHead,

tests/fields/test_fields.py

@@ -3,8 +3,8 @@ Test the fields
 """
 import torch
 
-from nerfactory.fields.instant_ngp_field import TCNNInstantNGPField
 from nerfactory.cameras.rays import Frustums, RaySamples
+from nerfactory.fields.instant_ngp_field import TCNNInstantNGPField
 
 
 def test_tcnn_instant_ngp_field():

tests/graphs/modules/test_ray_sampler.py

@@ -2,6 +2,8 @@
 Test samplers
 """
 import torch
+
+from nerfactory.cameras.rays import RayBundle
 from nerfactory.graphs.modules.ray_sampler import (
     LinearDisparitySampler,
     LogSampler,
@@ -9,8 +11,6 @@ from nerfactory.graphs.modules.ray_sampler import (
     SqrtSampler,
     UniformSampler,
 )
-
-from nerfactory.cameras.rays import RayBundle
 from nerfactory.graphs.modules.scene_colliders import NearFarCollider
 
 

tests/viewer/test_viewer.py

@@ -16,8 +16,11 @@ from nerfactory.cameras.camera_paths import InterpolatedCameraPath
 from nerfactory.cameras.cameras import get_camera
 from nerfactory.data.utils import get_dataset_inputs
 from nerfactory.utils.io import get_absolute_path
+from nerfactory.viewer.server.transformations import (
+    get_rotation_matrix,
+    get_translation_matrix,
+)
 from nerfactory.viewer.server.viewer_utils import get_default_vis, set_camera
-from nerfactory.viewer.server.transformations import get_rotation_matrix, get_translation_matrix
 
 
 def test_drawing():