epub covers

[librarian.git] / librarian / utils.py

diff --git a/librarian/utils.py b/librarian/utils.py
index 25936bf..a2e3522 100755 (executable)
--- a/librarian/utils.py
+++ b/librarian/utils.py
@@ -26,7 +26,7 @@ class Context(object):
         elif self._upctx is not None:
             return getattr(self._upctx, name)
         else:
-            raise AttributeError
+            raise AttributeError, "'%s' object has no attribute '%s'" % (type(self), name)
 
     def __setattr__(self, name, value):
         try: