Use NotConstantError instead of TypeError.

theano/tensor/basic.py

@@ -589,7 +589,7 @@ def get_constant_value(v):
                     v.owner.op.idx_list[0]]:
                     return numpy.asarray(1)
 
-    raise TypeError(v)
+    raise NotConstantError(v)
 
 
 class TensorType(Type):

theano/tensor/extra_ops.py

@@ -263,7 +263,7 @@ class RepeatOp(theano.Op):
         else:
             try:
                 const_reps = basic.get_constant_value(repeats)
-            except TypeError:
+            except basic.NotConstantError:
                 const_reps = None
             if const_reps == 1:
                 broadcastable = x.broadcastable