1 files changed, 13 insertions, 0 deletions
diff --git a/tutorius/properties.py b/tutorius/properties.py
index d9c68b1..8593e00 100644
--- a/tutorius/properties.py
+++ b/tutorius/properties.py
@@ -95,6 +95,19 @@ class TPropContainer(object):
         """
         return object.__getattribute__(self, "_props").keys()
 
+    # Providing the hash methods necessary to use TPropContainers
+    # in a dictionary, according to their properties
+    def __hash__(self):
+        try:
+            #Return a hash of properties (key, value) sorted by key
+            return hash(tuple(map(tuple,sorted(self._props.items(), cmp=lambda x, y: cmp(x[0], y[0])))))
+        except TypeError:
+            #FIXME For list properties (and maybe others), hashing will fail, fallback to id
+            return id(self)
+
+    def __eq__(self, e2):
+        return self._props.items() == e2._props.items()
+
 class TutoriusProperty(object):
     """
     The base class for all actions' properties. The interface is the following :