workaround for exception adding in editmode, for now setting vertex groups is...

workaround for exception adding in editmode, for now setting vertex groups is unsupported in editmode.
support could be added through bmesh.

add_mesh_extra_objects/add_mesh_gears.py

@@ -675,12 +675,14 @@ class AddGear(bpy.types.Operator):
         base = create_mesh_object(context, verts, [], faces, "Gear")
         obj = base.object
 
-        # Create vertex groups from stored vertices.
-        tipGroup = obj.vertex_groups.new('Tips')
-        tipGroup.add(verts_tip, 1.0, 'ADD')
+        # XXX, supporting adding in editmode is move involved
+        if obj.mode != 'EDIT':
+            # Create vertex groups from stored vertices.
+            tipGroup = obj.vertex_groups.new('Tips')
+            tipGroup.add(verts_tip, 1.0, 'ADD')
 
-        valleyGroup = obj.vertex_groups.new('Valleys')
-        valleyGroup.add(verts_valley, 1.0, 'ADD')
+            valleyGroup = obj.vertex_groups.new('Valleys')
+            valleyGroup.add(verts_valley, 1.0, 'ADD')
 
         return {'FINISHED'}
 
@@ -776,11 +778,13 @@ class AddWormGear(bpy.types.Operator):
         base = create_mesh_object(context, verts, [], faces, "Worm Gear")
         obj = base.object
 
-        # Create vertex groups from stored vertices.
-        tipGroup = obj.vertex_groups.new('Tips')
-        tipGroup.add(verts_tip, 1.0, 'ADD')
+        # XXX, supporting adding in editmode is move involved
+        if obj.mode != 'EDIT':
+            # Create vertex groups from stored vertices.
+            tipGroup = obj.vertex_groups.new('Tips')
+            tipGroup.add(verts_tip, 1.0, 'ADD')
 
-        valleyGroup = obj.vertex_groups.new('Valleys')
-        valleyGroup.add(verts_valley, 1.0, 'ADD')
+            valleyGroup = obj.vertex_groups.new('Valleys')
+            valleyGroup.add(verts_valley, 1.0, 'ADD')
 
         return {'FINISHED'}