Pycodestyle fixes

Refactored string formatting for property descriptions and test assertions to improve readability. Adjusted indentation in import_3mf.py for consistency. No functional changes were made.

Author: Clonephaze

io_mesh_3mf/__init__.py

@@ -49,7 +49,8 @@ class ThreeMFPreferences(bpy.types.AddonPreferences):
     # Export defaults
     default_coordinate_precision: bpy.props.IntProperty(
         name="Default Coordinate Precision",
-        description="Default number of decimal digits for coordinates in exported files. Higher values preserve more detail but increase file size",
+        description=("Default number of decimal digits for coordinates in exported files. "
+                     "Higher values preserve more detail but increase file size"),
         default=9,
         min=0,
         max=12,
@@ -79,7 +80,7 @@ class ThreeMFPreferences(bpy.types.AddonPreferences):
 
     def draw(self, context):
         layout = self.layout
-        
+
         box = layout.box()
         box.label(text="Export Defaults:", icon='EXPORT')
         box.prop(self, "default_coordinate_precision")

io_mesh_3mf/import_3mf.py

@@ -616,10 +616,10 @@ def read_objects(self, root: xml.etree.ElementTree.Element) -> None:
                 )
             if "name" in object_node.attrib and "Title" not in metadata:
                 metadata["Title"] = MetadataEntry(
-                        name="Title",
-                        preserve=True,
-                        datatype="xs:string",
-                        value=object_node.attrib.get("name")
+                    name="Title",
+                    preserve=True,
+                    datatype="xs:string",
+                    value=object_node.attrib.get("name")
                 )
 
             metadata["3mf:object_type"] = MetadataEntry(

test/export_3mf.py

@@ -136,7 +136,10 @@ def test_unit_scale_scene(self):
 
         # With new logic: scale * (scene_scale / 0.001) where threemf_unit is millimeter (0.001 m)
         # = 1.0 * (0.9 / 0.001) = 1.0 * 900 = 900
-        self.assertEqual(self.exporter.unit_scale(context), 900.0, "The scene scale of 0.9 divided by 3MF unit (0.001m) gives 900.")
+        self.assertEqual(
+            self.exporter.unit_scale(context),
+            900.0,
+            "The scene scale of 0.9 divided by 3MF unit (0.001m) gives 900.")
 
     def test_unit_scale_conversion(self):
         """
@@ -210,8 +213,8 @@ def test_unit_and_scene_scale_conversion(self):
                 context.scene.unit_settings.length_unit = blender_unit
                 # With new logic: scale * (SCENE_SCALE / 0.001) = scale * (0.001 / 0.001) = scale * 1.0
                 self.assertAlmostEqual(
-                        self.exporter.unit_scale(context),
-                        correct_conversions[blender_unit])
+                    self.exporter.unit_scale(context),
+                    correct_conversions[blender_unit])
 
     def test_write_materials_empty(self):
         """
@@ -943,7 +946,10 @@ def test_format_transformation_identity(self):
         Tests formatting the identity matrix.
         """
         identity_matrix = mathutils.Matrix.Identity(4)
-        self.assertEqual(self.exporter.format_transformation(identity_matrix), "1.000000000 0.000000000 0.000000000 0.000000000 1.000000000 0.000000000 0.000000000 0.000000000 1.000000000 0.000000000 0.000000000 0.000000000")
+        expected = ("1.000000000 0.000000000 0.000000000 0.000000000 "
+                    "1.000000000 0.000000000 0.000000000 0.000000000 "
+                    "1.000000000 0.000000000 0.000000000 0.000000000")
+        self.assertEqual(self.exporter.format_transformation(identity_matrix), expected)
 
     def test_format_transformation_coordinates(self):
         """