Removed warning when running tests

theano/tensor/nnet/tests/test_sigm.py

@@ -57,6 +57,9 @@ class T_sigmoid_opts(unittest.TestCase):
         x = T.vector()
         data = numpy.random.rand(54).astype(config.floatX)
 
+        backup = config.warn.identify_1pexp_bug
+        config.warn.identify_1pexp_bug = False
+        try:
             # tests exp_over_1_plus_exp
             f = theano.function([x], T.exp(x) / (1 + T.exp(x)), mode=m)
             assert [node.op for node in f.maker.env.toposort()] == [sigmoid]
@@ -138,6 +141,10 @@ class T_sigmoid_opts(unittest.TestCase):
                     T.mul, theano.tensor.inplace.neg_inplace]
             f(data)
 
+        finally:
+            # Restore config option.
+            config.warn.identify_1pexp_bug = backup
+
     def test_1msigmoid(self):
         if not register_local_1msigmoid:
             return