3 files changed, 9 insertions, 0 deletions
diff --git a/flup/resolver/importingmodule.py b/flup/resolver/importingmodule.py
index ba2c18c..b60d0d0 100644
--- a/flup/resolver/importingmodule.py
+++ b/flup/resolver/importingmodule.py
@@ -35,6 +35,9 @@ from resolver import *
 
 __all__ = ['ImportingModuleResolver']
 
+class NoDefault(object):
+    pass
+
 class ImportingModuleResolver(Resolver):
     """
     Constructor takes a directory name or a list of directories. Interprets
diff --git a/flup/resolver/module.py b/flup/resolver/module.py
index e0117a8..837f1e9 100644
--- a/flup/resolver/module.py
+++ b/flup/resolver/module.py
@@ -31,6 +31,9 @@ from resolver import *
 
 __all__ = ['ModuleResolver']
 
+class NoDefault(object):
+    pass
+
 class ModuleResolver(Resolver):
     """
     Exposes all top-level callables within a module. The module's __all__
diff --git a/flup/resolver/objectpath.py b/flup/resolver/objectpath.py
index aa1b21a..9b74c3f 100644
--- a/flup/resolver/objectpath.py
+++ b/flup/resolver/objectpath.py
@@ -33,6 +33,9 @@ from resolver import *
 
 __all__ = ['ObjectPathResolver', 'expose']
 
+class NoDefault(object):
+    pass
+
 class ObjectPathResolver(Resolver):
     """
     Inspired by CherryPy <http://www.cherrypy.org/>. :) For an explanation