# HG changeset patch
# User Thinker K.F. Li <thinker@codemud.net>
# Date 1303047289 -28800
# Node ID 28769a82a72d4fb26ec18516f63e1d13bbe38e64
# Parent  5ff744b981fb782bf405e77f5b364ea4f5562df9
Raise a maningful exception for traits that is not ready

diff -r 5ff744b981fb -r 28769a82a72d pyink/trait.py
--- a/pyink/trait.py	Sun Apr 17 21:29:16 2011 +0800
+++ b/pyink/trait.py	Sun Apr 17 21:34:49 2011 +0800
@@ -19,7 +19,11 @@
 
     def __set__(self, instance, value):
         attrname = instance._trait_attrname_map[self]
-        composite_obj = instance._trait_composite_obj
+        try:
+            composite_obj = instance._trait_composite_obj
+        except AttributeError:
+            raise RuntimeError, \
+                '%s does not finish its initialization' % (repr(instance))
         setattr(composite_obj, attrname, value)
         pass
     pass