Make a op class pickable by being at the top level of the module.

theano/compile/tests/test_debugmode.py

@@ -559,9 +559,7 @@ class Test_check_isfinite(unittest.TestCase):
         return
 
 
-class Test_preallocated_output(unittest.TestCase):
-
-    class BrokenCImplementationAdd(gof.Op):
+class BrokenCImplementationAdd(gof.Op):
     def __eq__(self, other):
         return type(self) == type(other)
 
@@ -652,10 +650,13 @@ class Test_preallocated_output(unittest.TestCase):
         }
         """ % dict(locals(), **sub)
 
+
+class Test_preallocated_output(unittest.TestCase):
+
     def test_f_contiguous(self):
         a = theano.tensor.fmatrix('a')
         b = theano.tensor.fmatrix('b')
-        z = self.BrokenCImplementationAdd()(a, b)
+        z = BrokenCImplementationAdd()(a, b)
         # Needed so that z is not the output of the graph
         out = theano.tensor.dot(z, numpy.eye(7))