document validation (stub)

[librarian.git] / librarian / utils.py

diff --git a/librarian/utils.py b/librarian/utils.py
index 25936bf..04b6d69 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:
@@ -44,7 +44,7 @@ class Context(object):
 
 
 class XMLNamespace(object):
-    '''A handy structure to repsent names in an XML namespace.'''
+    """A handy structure to repsent names in an XML namespace."""
     def __init__(self, uri):
         self.uri = uri