diff --git a/greasepencil_tools/prefs.py b/greasepencil_tools/prefs.py
index 2c9545b063190ec39a03be3fa68d0b53c6654ad0..0918a7a8ca7f564b2c77261f62bb0a159de76a50 100644
--- a/greasepencil_tools/prefs.py
+++ b/greasepencil_tools/prefs.py
@@ -60,7 +60,7 @@ class GreasePencilAddonPrefs(bpy.types.AddonPreferences):
         ('layer_navigator', 'Layer Navigator', 'Layer Navigation tool shortcut and prefs', 3),
         ),
     )
-    
+
     # --- props
 
     use_clic_drag : BoolProperty(
@@ -153,7 +153,7 @@ class GreasePencilAddonPrefs(bpy.types.AddonPreferences):
 
             row = layout.row(align=True)
             row.prop(self, "pref_tab", expand=True)
-            
+
             if self.pref_tab == 'box_deform':
 
                 ## BOX DEFORM
@@ -213,7 +213,7 @@ class GreasePencilAddonPrefs(bpy.types.AddonPreferences):
                 ## SCRUB TIMELINE
                 box = layout.box()
                 draw_ts_pref(prefs.ts, box)
-            
+
             if self.pref_tab == 'layer_navigator':
                 ## LAYER NAVIGATOR
                 box = layout.box()
diff --git a/io_scene_gltf2/__init__.py b/io_scene_gltf2/__init__.py
index b637f3531c37375130e1eff04c8d987861b4f57a..507c1d3486b62dda9b656080adcd7467d0ba7de2 100755
--- a/io_scene_gltf2/__init__.py
+++ b/io_scene_gltf2/__init__.py
@@ -360,7 +360,7 @@ class ExportGLTF2_Base(ConvertGLTF2_Base):
     use_active_collection: BoolProperty(
         name='Active Collection',
         description='Export objects in the active collection only',
-        default=False        
+        default=False
     )
 
     use_active_scene: BoolProperty(
@@ -626,7 +626,7 @@ class ExportGLTF2_Base(ConvertGLTF2_Base):
 
         export_settings['gltf_visible'] = self.use_visible
         export_settings['gltf_renderable'] = self.use_renderable
-        
+
         export_settings['gltf_active_collection'] = self.use_active_collection
         if self.use_active_collection:
             export_settings['gltf_active_collection_with_nested'] = self.use_active_collection_with_nested
diff --git a/io_scene_gltf2/blender/com/gltf2_blender_conversion.py b/io_scene_gltf2/blender/com/gltf2_blender_conversion.py
index 4cc46e5c21d582bef574759edf182324cfa1c375..11622ee3741cfe20b100155fcb8037e9160ed32e 100755
--- a/io_scene_gltf2/blender/com/gltf2_blender_conversion.py
+++ b/io_scene_gltf2/blender/com/gltf2_blender_conversion.py
@@ -125,4 +125,4 @@ def get_attribute_type(component_type, data_type):
             gltf2_io_constants.ComponentType.UnsignedShort: "BYTE_COLOR"
         }[component_type]
     else:
-        pass
\ No newline at end of file
+        pass
diff --git a/io_scene_gltf2/blender/com/gltf2_blender_data_path.py b/io_scene_gltf2/blender/com/gltf2_blender_data_path.py
index 9aeeb5dc744c4348ad7c183697217e1714417b87..410f305812635ca0c6e3421c9570af2d20c10eaf 100755
--- a/io_scene_gltf2/blender/com/gltf2_blender_data_path.py
+++ b/io_scene_gltf2/blender/com/gltf2_blender_data_path.py
@@ -44,4 +44,4 @@ def get_delta_modes(target_property: str) -> str:
     return target_property.startswith("delta_")
 
 def is_bone_anim_channel(data_path: str) -> bool:
-    return data_path[:10] == "pose.bones"
\ No newline at end of file
+    return data_path[:10] == "pose.bones"
diff --git a/io_scene_gltf2/blender/com/gltf2_blender_ui.py b/io_scene_gltf2/blender/com/gltf2_blender_ui.py
index efec00a3393a9f28c920465cd2b0568773ca8798..eb44420f2e496ef71170cc364e21fddc491636d2 100644
--- a/io_scene_gltf2/blender/com/gltf2_blender_ui.py
+++ b/io_scene_gltf2/blender/com/gltf2_blender_ui.py
@@ -10,7 +10,7 @@ def create_gltf_ao_group(operator, group_name):
 
     # create a new group
     gltf_ao_group = bpy.data.node_groups.new(group_name, "ShaderNodeTree")
-    
+
     return gltf_ao_group
 
 class NODE_OT_GLTF_SETTINGS(bpy.types.Operator):
@@ -143,8 +143,8 @@ class SCENE_OT_gltf2_variant_remove(bpy.types.Operator):
             if len(remove_idx_data) > 0:
                 for idx_data in remove_idx_data:
                     mesh.gltf2_variant_mesh_data.remove(idx_data)
-                
-        return {'FINISHED'}    
+
+        return {'FINISHED'}
 
 
 # Operator to display a variant
diff --git a/io_scene_gltf2/blender/exp/gltf2_blender_gather_image.py b/io_scene_gltf2/blender/exp/gltf2_blender_gather_image.py
index 6f31bd8d34906bcd32760eac071ef7edc8d47848..9cd60d1143f5c748e83d6f05329cde8aef30f886 100755
--- a/io_scene_gltf2/blender/exp/gltf2_blender_gather_image.py
+++ b/io_scene_gltf2/blender/exp/gltf2_blender_gather_image.py
@@ -187,7 +187,7 @@ def __get_image_data(sockets, export_settings) -> ExportImage:
         return __get_image_data_specular(sockets, results, export_settings)
     else:
         return __get_image_data_mapping(sockets, results, export_settings)
-    
+
 def __get_image_data_mapping(sockets, results, export_settings) -> ExportImage:
     """
     Simple mapping
@@ -266,7 +266,7 @@ def __get_image_data_mapping(sockets, results, export_settings) -> ExportImage:
 def __get_image_data_specular(sockets, results, export_settings) -> ExportImage:
     """
     calculating Specular Texture, settings needed data
-    """   
+    """
     from io_scene_gltf2.blender.exp.gltf2_blender_texture_specular import specular_calculation
     composed_image = ExportImage()
     composed_image.set_calc(specular_calculation)
diff --git a/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials.py b/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials.py
index edbb13545161d5efc1e5d649450a47c81bd9d78a..5914ebe9692eec8d8391402006a5eda16ae49f62 100755
--- a/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials.py
+++ b/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials.py
@@ -261,7 +261,7 @@ def __gather_extensions(blender_material, emissive_factor, export_settings):
     sheen_extension, use_actives_uvmap_sheen = export_sheen(blender_material, export_settings)
     if sheen_extension:
         extensions["KHR_materials_sheen"] = sheen_extension
-        actives_uvmaps.extend(use_actives_uvmap_sheen)   
+        actives_uvmaps.extend(use_actives_uvmap_sheen)
 
     # KHR_materials_ior
     # Keep this extension at the end, because we export it only if some others are exported
diff --git a/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_clearcoat.py b/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_clearcoat.py
index 65c164b4b0dab67e0f68c68151a158395ce83455..811dccf2924eacc5183b45ecca09c0db2a11d150 100644
--- a/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_clearcoat.py
+++ b/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_clearcoat.py
@@ -78,4 +78,4 @@ def export_clearcoat(blender_material, export_settings):
         if clearcoat_normal_texture_use_active_uvmap:
             use_actives_uvmaps.append("clearcoatNormalTexture")
 
-    return Extension('KHR_materials_clearcoat', clearcoat_extension, False), use_actives_uvmaps
\ No newline at end of file
+    return Extension('KHR_materials_clearcoat', clearcoat_extension, False), use_actives_uvmaps
diff --git a/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_emission.py b/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_emission.py
index 562fc19d91c1abe295ff8681aa12c3dd3c62bfd8..7e8368ba778bcf44cce009ed9333b6c8600225d3 100644
--- a/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_emission.py
+++ b/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_emission.py
@@ -58,4 +58,4 @@ def export_emission_strength_extension(emissive_factor, export_settings):
     emissive_strength_extension = {}
     emissive_strength_extension['emissiveStrength'] = max(emissive_factor)
 
-    return Extension('KHR_materials_emissive_strength', emissive_strength_extension, False)
\ No newline at end of file
+    return Extension('KHR_materials_emissive_strength', emissive_strength_extension, False)
diff --git a/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_ior.py b/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_ior.py
index fc219c01074ef602b5121b678a939e1bc00f69b1..3c6c2c272cc06bd638b4bac4de7827adb0c51e51 100644
--- a/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_ior.py
+++ b/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_ior.py
@@ -32,4 +32,4 @@ def export_ior(blender_material, extensions, export_settings):
     ior_extension = {}
     ior_extension['ior'] = ior_socket.default_value
 
-    return Extension('KHR_materials_ior', ior_extension, False)
\ No newline at end of file
+    return Extension('KHR_materials_ior', ior_extension, False)
diff --git a/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_sheen.py b/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_sheen.py
index 1d4fb5b93e9655ec9dd242a00177995a1f2e51b9..dae74f634faa072a7df487826e0708c0df43e5a5 100644
--- a/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_sheen.py
+++ b/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_sheen.py
@@ -33,7 +33,7 @@ def export_sheen(blender_material, export_settings):
             fac = [1.0, 1.0, 1.0] # Default is 0.0/0.0/0.0, so we need to set it to 1 if no factor
         if fac is not None and fac != [0.0, 0.0, 0.0]:
             sheen_extension['sheenColorFactor'] = fac
-        
+
         # Texture
         if gltf2_blender_get.has_image_node_from_socket(sheenColor_socket):
             original_sheenColor_texture, original_sheenColor_use_active_uvmap, _ = gltf2_blender_gather_texture_info.gather_texture_info(
@@ -57,7 +57,7 @@ def export_sheen(blender_material, export_settings):
             fac = 1.0 # Default is 0.0 so we need to set it to 1.0 if no factor
         if fac is not None and fac != 0.0:
             sheen_extension['sheenRoughnessFactor'] = fac
-        
+
         # Texture
         if gltf2_blender_get.has_image_node_from_socket(sheenRoughness_socket):
             original_sheenRoughness_texture, original_sheenRoughness_use_active_uvmap, _ = gltf2_blender_gather_texture_info.gather_texture_info(
@@ -68,5 +68,5 @@ def export_sheen(blender_material, export_settings):
             sheen_extension['sheenRoughnessTexture'] = original_sheenRoughness_texture
             if original_sheenRoughness_use_active_uvmap:
                 use_actives_uvmaps.append("sheenRoughnessTexture")
-    
+
     return Extension('KHR_materials_sheen', sheen_extension, False), use_actives_uvmaps
diff --git a/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_specular.py b/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_specular.py
index 9e0318ce1b198915f17a08872cff620599a22a48..4e47bae90b8f668c62585e8bc2b804377b2e7def 100644
--- a/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_specular.py
+++ b/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_specular.py
@@ -34,7 +34,7 @@ def export_original_specular(blender_material, export_settings):
         fac = gltf2_blender_get.get_factor_from_socket(original_specular_socket, kind='VALUE')
         if fac is not None and fac != 1.0:
             specular_extension['specularFactor'] = fac
-        
+
         # Texture
         if gltf2_blender_get.has_image_node_from_socket(original_specular_socket):
             original_specular_texture, original_specular_use_active_uvmap, _ = gltf2_blender_gather_texture_info.gather_texture_info(
@@ -67,7 +67,7 @@ def export_original_specular(blender_material, export_settings):
             specular_extension['specularColorTexture'] = original_specularcolor_texture
             if original_specularcolor_use_active_uvmap:
                 use_actives_uvmaps.append("specularColorTexture")
-    
+
     return Extension('KHR_materials_specular', specular_extension, False), use_actives_uvmaps
 
 def export_specular(blender_material, export_settings):
@@ -117,7 +117,7 @@ def export_specular(blender_material, export_settings):
                 l = luminance(c)
                 if l == 0:
                     return np.array(c)
-                return np.array([c[0] / l, c[1] / l, c[2] / l])            
+                return np.array([c[0] / l, c[1] / l, c[2] / l])
 
             f0_from_ior = ((ior - 1)/(ior + 1))**2
             if f0_from_ior == 0:
@@ -151,8 +151,8 @@ def export_specular(blender_material, export_settings):
                     primary_socket = transmission_socket
 
         specularColorTexture, use_active_uvmap, specularColorFactor = gltf2_blender_gather_texture_info.gather_texture_info(
-            primary_socket, 
-            sockets, 
+            primary_socket,
+            sockets,
             export_settings,
             filter_type='ANY')
         if specularColorTexture is None:
@@ -166,7 +166,7 @@ def export_specular(blender_material, export_settings):
 
         if specularColorFactor is not None:
             specular_extension['specularColorFactor'] = specularColorFactor
-            
+
 
     specular_extension = Extension('KHR_materials_specular', specular_extension, False) if specular_ext_enabled else None
-    return specular_extension, use_actives_uvmaps
\ No newline at end of file
+    return specular_extension, use_actives_uvmaps
diff --git a/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_transmission.py b/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_transmission.py
index fdc5d8c751705717edfa806e22e28cb38307f4c4..f88663a59d5629d0a774d7c98eb1d971f7e48360 100644
--- a/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_transmission.py
+++ b/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_transmission.py
@@ -44,4 +44,4 @@ def export_transmission(blender_material, export_settings):
         if use_active_uvmap:
             use_actives_uvmaps.append("transmissionTexture")
 
-    return Extension('KHR_materials_transmission', transmission_extension, False), use_actives_uvmaps
\ No newline at end of file
+    return Extension('KHR_materials_transmission', transmission_extension, False), use_actives_uvmaps
diff --git a/io_scene_gltf2/blender/exp/gltf2_blender_gather_nodes.py b/io_scene_gltf2/blender/exp/gltf2_blender_gather_nodes.py
index a615ace240a98f544b90ae030abbfbbc419a5384..b62978b4b3d1b16c4bfffefb5032af5477bf5cb8 100755
--- a/io_scene_gltf2/blender/exp/gltf2_blender_gather_nodes.py
+++ b/io_scene_gltf2/blender/exp/gltf2_blender_gather_nodes.py
@@ -317,7 +317,7 @@ def __gather_trans_rot_scale(vnode, export_settings):
         if export_settings['vtree'].nodes[vnode.parent_uuid].skin is None:
             trans, rot, sca = (export_settings['vtree'].nodes[vnode.parent_uuid].matrix_world.inverted_safe() @ vnode.matrix_world).decompose()
         else:
-            # But ... if parent has skin, the parent TRS are not taken into account, so don't get local from parent, but from armature 
+            # But ... if parent has skin, the parent TRS are not taken into account, so don't get local from parent, but from armature
             # It also depens if skined mesh is parented to armature or not
             if export_settings['vtree'].nodes[vnode.parent_uuid].parent_uuid is not None and export_settings['vtree'].nodes[export_settings['vtree'].nodes[vnode.parent_uuid].parent_uuid].blender_type == VExportNode.ARMATURE:
                 trans, rot, sca = (export_settings['vtree'].nodes[export_settings['vtree'].nodes[vnode.parent_uuid].armature].matrix_world.inverted_safe() @ vnode.matrix_world).decompose()
diff --git a/io_scene_gltf2/blender/exp/gltf2_blender_gather_primitives_extract.py b/io_scene_gltf2/blender/exp/gltf2_blender_gather_primitives_extract.py
index c2bf96fdbddb9eb3ed6ab757032164c1f3e7ba19..d7cf4d8f8366ab71559fa1deded28b4664c18460 100644
--- a/io_scene_gltf2/blender/exp/gltf2_blender_gather_primitives_extract.py
+++ b/io_scene_gltf2/blender/exp/gltf2_blender_gather_primitives_extract.py
@@ -152,7 +152,7 @@ class PrimitiveCreator:
             attr['blender_domain'] = blender_attribute.domain
             attr['blender_data_type'] = blender_attribute.data_type
 
-            # For now, we don't export edge data, because I need to find how to 
+            # For now, we don't export edge data, because I need to find how to
             # get from edge data to dots data
             if attr['blender_domain'] == "EDGE":
                 continue
@@ -386,7 +386,7 @@ class PrimitiveCreator:
                     attr['set'](attr)
                 else: # Regular case
                     self.__set_regular_attribute(attr)
-                
+
             if self.skin:
                 joints = [[] for _ in range(self.num_joint_sets)]
                 weights = [[] for _ in range(self.num_joint_sets)]
@@ -558,7 +558,7 @@ class PrimitiveCreator:
                 self.__get_normal_attribute(attr)
             elif attr['gltf_attribute_name'] == "TANGENT":
                 self.__get_tangent_attribute(attr)
-            
+
         return getting_function
 
 
diff --git a/io_scene_gltf2/blender/exp/gltf2_blender_gather_texture_info.py b/io_scene_gltf2/blender/exp/gltf2_blender_gather_texture_info.py
index 8c7cf80ba2bffc74f477330d4f7f7a9ba1c53b53..3265b1b4965cdeebb6daef11be83f1a4f005af15 100755
--- a/io_scene_gltf2/blender/exp/gltf2_blender_gather_texture_info.py
+++ b/io_scene_gltf2/blender/exp/gltf2_blender_gather_texture_info.py
@@ -88,7 +88,7 @@ def __filter_texture_info(primary_socket, blender_shader_sockets, filter_type, e
         if all([__get_tex_from_socket(socket) is None for socket in blender_shader_sockets]):
             return False
     elif filter_type == "NONE":
-        # No check 
+        # No check
         pass
 
     return True
diff --git a/io_scene_gltf2/blender/exp/gltf2_blender_get.py b/io_scene_gltf2/blender/exp/gltf2_blender_get.py
index 6e1d2d0f8f9bd0b5210f6749cc4d398e8dfda6a9..02c6e273fef886d29dac8f2500626e11058b36b2 100755
--- a/io_scene_gltf2/blender/exp/gltf2_blender_get.py
+++ b/io_scene_gltf2/blender/exp/gltf2_blender_get.py
@@ -251,7 +251,7 @@ def get_factor_from_socket(socket, kind):
         if kind == 'VALUE':
             if node.type == 'MATH' and node.operation == 'MULTIPLY':
                 x1 = get_const_from_socket(node.inputs[0], kind)
-                x2 = get_const_from_socket(node.inputs[1], kind)               
+                x2 = get_const_from_socket(node.inputs[1], kind)
         if x1 is not None and x2 is None: return x1
         if x2 is not None and x1 is None: return x2
 
diff --git a/io_scene_gltf2/blender/exp/gltf2_blender_texture_specular.py b/io_scene_gltf2/blender/exp/gltf2_blender_texture_specular.py
index 6321f1285d644a13629ed01d19afc6e6adf034d4..f70dba1e4ada7e9a4e8c65643cd9c72b10d6d54d 100644
--- a/io_scene_gltf2/blender/exp/gltf2_blender_texture_specular.py
+++ b/io_scene_gltf2/blender/exp/gltf2_blender_texture_specular.py
@@ -9,7 +9,7 @@ from .gltf2_blender_image import TmpImageGuard, make_temp_image_copy
 def specular_calculation(stored):
 
     # See https://gist.github.com/proog128/d627c692a6bbe584d66789a5a6437a33
-    
+
     # Find all Blender images used
     images = []
     for fill in stored.values():
@@ -29,7 +29,7 @@ def specular_calculation(stored):
 
     for identifier, image in [(ident, store.image) for (ident, store) in stored.items() if isinstance(store, StoreImage)]:
         tmp_buf = np.empty(width * height * 4, np.float32)
-        
+
         if image.size[0] == width and image.size[1] == height:
             image.pixels.foreach_get(tmp_buf)
         else:
@@ -75,7 +75,7 @@ def specular_calculation(stored):
         # TODOExt Manage all 0
         return c / stack3(l)
 
-    
+
     f0_from_ior = ((ior - 1)/(ior + 1))**2
     tint_strength = (1 - stack3(buffers['specular_tint'])) + normalize(buffers['base_color']) * stack3(buffers['specular_tint'])
     out_buf = (1 - stack3(buffers['transmission'])) * (1 / f0_from_ior) * 0.08 * stack3(buffers['specular']) * tint_strength + stack3(buffers['transmission']) * tint_strength
@@ -90,5 +90,5 @@ def specular_calculation(stored):
 
     out_buf = np.dstack((out_buf, np.ones((width, height)))) # Set alpha (glTF specular) to 1
     out_buf = np.reshape(out_buf, (width * height * 4))
-    
+
     return np.float32(out_buf), width, height, [float(f) for f in factor] if factor else None
diff --git a/io_scene_gltf2/blender/imp/gltf2_blender_KHR_materials_sheen.py b/io_scene_gltf2/blender/imp/gltf2_blender_KHR_materials_sheen.py
index c16cc9fa3685f33cb086fa2697990f009a8563b5..a18d9163e89a064ac344d70db08f3681ccf12713 100644
--- a/io_scene_gltf2/blender/imp/gltf2_blender_KHR_materials_sheen.py
+++ b/io_scene_gltf2/blender/imp/gltf2_blender_KHR_materials_sheen.py
@@ -31,7 +31,7 @@ def sheen(  mh,
     sheenRoughnessFactor = ext.get('sheenRoughnessFactor', 0.0)
     tex_info_roughness = ext.get('sheenRoughnessTexture')
     if tex_info_roughness is not None:
-        tex_info_roughness = TextureInfo.from_dict(tex_info_roughness)    
+        tex_info_roughness = TextureInfo.from_dict(tex_info_roughness)
 
     if tex_info_color is None:
         sheenColorFactor.extend([1.0])
@@ -86,4 +86,4 @@ def sheen(  mh,
             color_socket=None,
             alpha_socket=sheenRoughness_socket
             )
-    return
\ No newline at end of file
+    return
diff --git a/io_scene_gltf2/blender/imp/gltf2_blender_KHR_materials_specular.py b/io_scene_gltf2/blender/imp/gltf2_blender_KHR_materials_specular.py
index 28af68d8b78c7a5bc166a8c103c6bb8858d1edd1..850bf846dd0934c6028b9ad052c7c8b9d8cb9e73 100644
--- a/io_scene_gltf2/blender/imp/gltf2_blender_KHR_materials_specular.py
+++ b/io_scene_gltf2/blender/imp/gltf2_blender_KHR_materials_specular.py
@@ -9,9 +9,9 @@ from .gltf2_blender_image import BlenderImage
 from ..exp.gltf2_blender_image import TmpImageGuard, make_temp_image_copy
 
 
-def specular(mh, location_specular, 
-                 location_specular_tint, 
-                 specular_socket, 
+def specular(mh, location_specular,
+                 location_specular_tint,
+                 specular_socket,
                  specular_tint_socket,
                  original_specular_socket,
                  original_specularcolor_socket,
@@ -88,9 +88,9 @@ def specular(mh, location_specular,
     # Before creating converted textures,
     # Also plug non converted data into glTF PBR Non Converted Extensions node
     original_specular(  mh,
-                        specular_factor, 
-                        tex_specular_info, 
-                        specular_color_factor, 
+                        specular_factor,
+                        tex_specular_info,
+                        specular_color_factor,
                         tex_specular_color_info,
                         original_specular_socket,
                         original_specularcolor_socket,
@@ -98,7 +98,7 @@ def specular(mh, location_specular,
                         location_original_specularcolor
                         )
 
-    
+
     if not use_texture:
 
         def luminance(c):
@@ -165,14 +165,14 @@ def specular(mh, location_specular,
             specular_image_name: 'spec'
         }
         images = [(name, bpy.data.images[name]) for name in [base_color_image_name, transmission_image_name, specularcolor_image_name, specular_image_name] if name is not None]
-        
+
         width = max(image[1].size[0] for image in images)
         height = max(image[1].size[1] for image in images)
 
         buffers = {}
         for name, image in images:
             tmp_buf = np.empty(width * height * 4, np.float32)
-            
+
             if image.size[0] == width and image.size[1] == height:
                 image.pixels.foreach_get(tmp_buf)
             else:
@@ -265,7 +265,7 @@ def specular(mh, location_specular,
                 color_socket=specular_socket,
                 forced_image=blender_image_spec
             )
-    
+
         if blender_specular_tint_tex_not_needed == True:
             lum = lambda c: 0.3 * c[0] + 0.6 * c[1] + 0.1 * c[2]
             specular_tint_socket.default_value = lum(blender_specular_tint[0][0])
@@ -275,7 +275,7 @@ def specular(mh, location_specular,
             blender_image_tint = bpy.data.images.new('Specular Tint', width, height)
             blender_image_tint.pixels.foreach_set(np.float32(blender_specular_tint))
             blender_image_tint.pack()
-    
+
             # Create Textures in Blender
             tex_info = tex_specular_color_info
             if tex_info is None:
@@ -297,8 +297,8 @@ def specular(mh, location_specular,
 
 def original_specular(  mh,
                         specular_factor,
-                        tex_specular_info, 
-                        specular_color_factor, 
+                        tex_specular_info,
+                        specular_color_factor,
                         tex_specular_color_info,
                         original_specular_socket,
                         original_specularcolor_socket,
@@ -355,11 +355,11 @@ def original_specular(  mh,
                 original_specularcolor_socket = node.inputs[6]
                 node.inputs[7].default_value = specular_color_factor
                 x_specularcolor -= 200
-            
+
             texture(
                 mh,
                 tex_info=tex_specular_color_info,
                 label='SPECULAR COLOR',
                 location=(x_specularcolor, y_specularcolor),
                 color_socket=original_specularcolor_socket,
-                )
\ No newline at end of file
+                )
diff --git a/io_scene_gltf2/blender/imp/gltf2_blender_image.py b/io_scene_gltf2/blender/imp/gltf2_blender_image.py
index c9a8752741228dc6aa9d61c177eda0935f5f8307..bed4215bda9b1e56cc3f0d043997470b01216744 100755
--- a/io_scene_gltf2/blender/imp/gltf2_blender_image.py
+++ b/io_scene_gltf2/blender/imp/gltf2_blender_image.py
@@ -97,4 +97,3 @@ def _placeholder_image(name, path):
     image.filepath = path
     image.source = 'FILE'
     return image
-
diff --git a/io_scene_gltf2/blender/imp/gltf2_blender_mesh.py b/io_scene_gltf2/blender/imp/gltf2_blender_mesh.py
index bb8d51f4ff60b684ea837eb42ad35dd8c4c08b98..aba7c8ae227ca1c9a047ce9bc640da98a6a09292 100755
--- a/io_scene_gltf2/blender/imp/gltf2_blender_mesh.py
+++ b/io_scene_gltf2/blender/imp/gltf2_blender_mesh.py
@@ -138,7 +138,7 @@ def do_primitives(gltf, mesh_idx, skin_idx, mesh, ob):
     for attr in attributes:
         attribute_data.append(
             np.empty(
-                dtype=ComponentType.to_numpy_dtype(gltf.data.accessors[prim.attributes[attr]].component_type), 
+                dtype=ComponentType.to_numpy_dtype(gltf.data.accessors[prim.attributes[attr]].component_type),
                 shape=(0, DataType.num_elements(gltf.data.accessors[prim.attributes[attr]].type)))
                 )
 
@@ -426,7 +426,7 @@ def do_primitives(gltf, mesh_idx, skin_idx, mesh, ob):
 
                 for mapping in prim.extensions['KHR_materials_variants']['mappings']:
                     # Store, for each variant, the material link to this primitive
-                    
+
                     variant_primitive = mesh.gltf2_variant_mesh_data.add()
                     variant_primitive.material_slot_index = material_index
                     if 'material' not in mapping.keys():
diff --git a/io_scene_gltf2/blender/imp/gltf2_blender_pbrMetallicRoughness.py b/io_scene_gltf2/blender/imp/gltf2_blender_pbrMetallicRoughness.py
index f9866764453f71e84f8c651ffb3fa0c0b98e3000..3014330e6b08a70ff28a73a3f358d6274163c8a0 100755
--- a/io_scene_gltf2/blender/imp/gltf2_blender_pbrMetallicRoughness.py
+++ b/io_scene_gltf2/blender/imp/gltf2_blender_pbrMetallicRoughness.py
@@ -88,7 +88,7 @@ def pbr_metallic_roughness(mh: MaterialHelper):
 
 
     if mh.pymat.extensions and 'KHR_materials_sheen':
-        pass #TOTOEXT     
+        pass #TOTOEXT
 
     locs = calc_locations(mh)
 
diff --git a/io_scene_gltf2/io/com/gltf2_io_constants.py b/io_scene_gltf2/io/com/gltf2_io_constants.py
index 816220d953c02fe14d16685966a6e72eb34e62c6..82fd6fa014f9a46dbf47aad11dbf5e307a8f68d1 100755
--- a/io_scene_gltf2/io/com/gltf2_io_constants.py
+++ b/io_scene_gltf2/io/com/gltf2_io_constants.py
@@ -149,4 +149,4 @@ GLTF_DATA_TYPE_MAT2 = "MAT2"
 GLTF_DATA_TYPE_MAT3 = "MAT3"
 GLTF_DATA_TYPE_MAT4 = "MAT4"
 
-GLTF_IOR = 1.5
\ No newline at end of file
+GLTF_IOR = 1.5
diff --git a/render_povray/model_meta_topology.py b/render_povray/model_meta_topology.py
index e1566c7a3f7d7b08d57935277df1a01bb680003f..c99fa46b209def510cc7b7adb29aa71d0ca0efb1 100644
--- a/render_povray/model_meta_topology.py
+++ b/render_povray/model_meta_topology.py
@@ -270,7 +270,7 @@ def export_meta(file, metas, tab_write, DEF_MAT_NAME):
                 diffuse_color = material.diffuse_color
                 trans = 1.0 - material.pov.alpha
                 if material.pov.use_transparency and material.pov.transparency_method == 'RAYTRACE':
-                    pov_filter = material.pov_raytrace_transparency.filter * (1.0 - 
+                    pov_filter = material.pov_raytrace_transparency.filter * (1.0 -
                     material.pov.alpha)
                     trans = (1.0 - material.pov.alpha) - pov_filter
                 else:
diff --git a/viewport_vr_preview/gui.py b/viewport_vr_preview/gui.py
index d9adfb950edaacd5dad16ed6e1d00f896ee77544..b5c9a470be16d82b0c474a9c705a6af14eff933a 100644
--- a/viewport_vr_preview/gui.py
+++ b/viewport_vr_preview/gui.py
@@ -12,7 +12,7 @@ from bpy.types import (
     Panel,
     UIList,
 )
-# Add space_view3d.py to module search path for VIEW3D_PT_object_type_visibility import.  
+# Add space_view3d.py to module search path for VIEW3D_PT_object_type_visibility import.
 import os.path, sys
 sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), '../../startup/bl_ui')))
 from space_view3d import VIEW3D_PT_object_type_visibility