typing

src/ifcsverchok/__init__.py

@@ -185,8 +185,8 @@ class IFC_Sv_write_file(bpy.types.Operator):
     def poll(cls, context):
         return any("IFC" in n for n in context.space_data.edit_tree.nodes.keys())
 
-    def ensure_hirarchy(self, file):
-        elements_in_buildings = set()
+    def ensure_hirarchy(self, file: ifcopenshell.file) -> None:
+        elements_in_buildings: set[ifcopenshell.entity_instance] = set()
         if len(file.by_type("IfcBuilding")) == 0:
             my_building = ifcopenshell.api.run("root.create_entity", file, ifc_class="IfcBuilding", name="My Building")
             elements = ifcopenshell.util.element.get_decomposition(my_building)
@@ -269,6 +269,7 @@ class IFC_PT_write_file_panel(bpy.types.Panel):
     def poll(cls, context):
         if context.space_data.edit_tree and any("IFC" in n for n in context.space_data.edit_tree.nodes.keys()):
             return True
+        return False
 
     def draw(self, context):
         ng = context.space_data.node_tree