X-Git-Url: http://users.mur.at/ms/git/gitweb/?p=OpenColorIO-Configs.git;a=blobdiff_plain;f=aces_1.0.0%2Fpython%2Faces_ocio%2Futilities.py;h=7ba5e5a2542eea32ff677219c4ba45e3d594a425;hp=0d3f69715d3350b8f02bfdec507a31bc29a77bbb;hb=07d70535fd63c090b57c754758a0b2ae3ff121ac;hpb=4899e9d3946e6c80e80149ad2c388b15f271d852

diff --git a/aces_1.0.0/python/aces_ocio/utilities.py b/aces_1.0.0/python/aces_ocio/utilities.py
index 0d3f697..7ba5e5a 100644
--- a/aces_1.0.0/python/aces_ocio/utilities.py
+++ b/aces_1.0.0/python/aces_ocio/utilities.py
@@ -39,16 +39,16 @@ class ColorSpace(object):
 
     def __init__(self,
                  name,
-                 aliases=[],
+                 aliases=None,
                  description=None,
                  bit_depth=ocio.Constants.BIT_DEPTH_F32,
                  equality_group='',
                  family=None,
                  is_data=False,
-                 to_reference_transforms=[],
-                 from_reference_transforms=[],
+                 to_reference_transforms=None,
+                 from_reference_transforms=None,
                  allocation_type=ocio.Constants.ALLOCATION_UNIFORM,
-                 allocation_vars=[0, 1],
+                 allocation_vars=None,
                  aces_transform_id=None):
         """
         Object description.
@@ -64,6 +64,18 @@ class ColorSpace(object):
              Return value description.
         """
 
+        if aliases is None:
+            aliases = []
+
+        if to_reference_transforms is None:
+            to_reference_transforms = []
+
+        if from_reference_transforms is None:
+            from_reference_transforms = []
+
+        if allocation_vars is None:
+            allocation_vars = [0, 1]
+
         self.name = name
         self.aliases = aliases
         self.bit_depth = bit_depth