typing

also small optimization in MaterialCreator.create to address ifc a couple times less

src/ifcopenshell-python/ifcopenshell/api/material/copy_material.py

@@ -33,9 +33,7 @@ def copy_material(file: ifcopenshell.file, material: ifcopenshell.entity_instanc
     style is reused.
 
     :param material: The IfcMaterialDefinition to copy
-    :type material: ifcopenshell.entity_instance
     :return: The new copy of the material
-    :rtype: ifcopenshell.entity_instance
 
     Example:
 
@@ -68,9 +66,13 @@ def copy_material(file: ifcopenshell.file, material: ifcopenshell.entity_instanc
         return _copy_material_with_inverses(file, material)
     elif material.is_a("IfcMaterialList"):
         return _copy_material_with_inverses(file, material)
+    else:
+        raise Exception(f"Unexpected material type: '{material.is_a()}' ({material}).")
 
 
-def _copy_material_with_inverses(file, material):
+def _copy_material_with_inverses(
+    file: ifcopenshell.file, material: ifcopenshell.entity_instance
+) -> ifcopenshell.entity_instance:
     new = ifcopenshell.util.element.copy(file, material)
     for inverse in file.get_inverse(material):
         if inverse.is_a("IfcMaterialProperties"):

src/ifcopenshell-python/ifcopenshell/api/style/assign_representation_styles.py

@@ -16,6 +16,7 @@
 # You should have received a copy of the GNU Lesser General Public License
 # along with IfcOpenShell.  If not, see <http://www.gnu.org/licenses/>.
 import ifcopenshell
+from typing import Any
 
 
 def assign_representation_styles(
@@ -112,6 +113,10 @@ def assign_representation_styles(
 
 
 class Usecase:
+    file: ifcopenshell.file
+    settings: dict[str, Any]
+    results: list[ifcopenshell.entity_instance]
+
     def execute(self):
         if not self.settings["styles"]:
             return []