Minified linalg ops to fit this PR and changed str to print all the properties.

theano/gof/op.py

@@ -586,7 +586,7 @@ class Op(utils.object2, PureOp, CLinkerOp):
 
     def __str__(self):
         if hasattr(self, '__props__'):
-            return "%s{%s}" % (self.__class__.__name__, ", ".join(str(p) for p in self._props()))
+            return "%s{%s}" % (self.__class__.__name__, ", ".join("%s=%r" % (p, getattr(self, p)) for p in self.__props__))
         else:
             return super(Op, self).__str__()
 

theano/sandbox/linalg/ops.py

@@ -70,16 +70,13 @@ class Hint(Op):
     transfer that information out of the graph.
 
     """
+
+    __props__ = ('hints', 'view_map')
+
     def __init__(self, **kwargs):
         self.hints = tuple(kwargs.items())
         self.view_map = {0: [0]}
 
-    def __eq__(self, other):
-        return type(self) == type(other) and self.hints == other.hints
-
-    def __hash__(self):
-        return hash((type(self), self.hints))
-
     def make_node(self, x):
         return Apply(self, [x], [x.type()])