Starting here, trunk is broken pending re-organizations. Check out the previous revision if you'd like to tinker.

src/objects/exceptions.py

@@ -0,0 +1,11 @@
+"""
+Exceptions for the object application.
+"""
+from src.exceptions_generic import GenericException
+
+class ObjectNotExist(GenericException):
+    """
+    Raised when an object is queried for but does not exist.
+    """
+    def __str__(self):
+        return repr("No such object: %s" % self.value)