add encoding to group

Author: Licini

CHANGELOG.md

@@ -20,6 +20,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * Changed `SceneObject.worldtransformation` to the multiplication of all transformations from the scene object to the root of the scene tree, there will no longer be an additional transformation in relation to the object's frame.
 * Fixed call to `astar_shortest_path` in `Graph.shortest_path`.
 * Fixed a bug when printing an empty `Tree`.
+* Fixed a bug in `Group` for IronPython where the decoding declaration was missing.
+* Fixed a bug where a `Group` without name could not be added to the scene.
 
 ### Removed
 

src/compas/scene/group.py

@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 from .sceneobject import SceneObject
 
 

src/compas/scene/sceneobject.py

@@ -104,7 +104,7 @@ def __init__(
         if item and not isinstance(item, Data):
             raise ValueError("The item assigned to this scene object should be a data object: {}".format(type(item)))
 
-        name = name or item.name
+        name = name or getattr(item, "name", None)
         super(SceneObject, self).__init__(name=name, **kwargs)
         # the scene object needs to store the context
         # because it has no access to the tree and/or the scene before it is added