slices now can be compared

theano/tensor/basic.py

@@ -7214,6 +7214,12 @@ class MakeSlice(Op):
 
     def __str__(self):
         return self.__class__.__name__    
+
+    def __eq__(self, other):
+        return type(self) == type(other)
+
+    def __hash__(self):
+        return hash(type(self))
 make_slice = MakeSlice()