Remove printing during test

theano/configdefaults.py

@@ -246,7 +246,7 @@ AddConfigVar(
     'on_opt_error',
     ("What to do when an optimization crashes: warn and skip it, raise "
      "the exception, or fall into the pdb debugger."),
-    EnumStr('warn', 'raise', 'pdb'),
+    EnumStr('warn', 'raise', 'pdb', 'ignore'),
     in_c_key=False)
 
 

theano/gof/opt.py

@@ -1364,9 +1364,10 @@ class NavigatorOptimizer(Optimizer):
     def warn(exc, nav, repl_pairs, local_opt):
         """failure_callback for NavigatorOptimizer: print traceback
         """
-        _logger.error("Optimization failure due to: %s" % str(local_opt))
-        _logger.error("TRACEBACK:")
-        _logger.error(traceback.format_exc())
+        if config.on_opt_error != 'ignore':
+            _logger.error("Optimization failure due to: %s" % str(local_opt))
+            _logger.error("TRACEBACK:")
+            _logger.error(traceback.format_exc())
         if config.on_opt_error == 'pdb':
             pdb.post_mortem(sys.exc_info()[2])
         elif isinstance(exc, AssertionError) or config.on_opt_error == 'raise':

theano/sandbox/cuda/tests/test_opt.py

@@ -106,15 +106,17 @@ def test_local_assert_no_cpu_op():
     mode_local_assert = mode_local_assert.excluding("local_gpu_elemwise_1")
 
     old = config.assert_no_cpu_op
-
+    old2 = config.on_opt_error
     # If the flag is raise
     try:
         config.assert_no_cpu_op = 'raise'
+        config.on_opt_error = 'ignore'
 
         assert_raises(AssertionError, theano.function,
                         [], out, mode=mode_local_assert)
     finally:
         config.assert_no_cpu_op = old
+        config.on_opt_error = old2
 
     # If the flag is ignore
     try: