Flake8 fixes.

theano/sandbox/cuda/tests/test_dnn.py

@@ -9,7 +9,6 @@ from six import StringIO
 import theano.tensor as T
 import theano.tests.unittest_tools as utt
 from theano.sandbox.neighbours import images2neibs
-from theano.tensor.nnet import softmax_op
 from theano.tensor.signal.downsample import max_pool_2d
 from theano.tensor.signal.downsample import DownsampleFactorMaxGrad
 import theano.sandbox.cuda.dnn as dnn
@@ -526,7 +525,7 @@ class test_DnnSoftMax(test_nnet.test_SoftMax):
         # Verify that the SoftmaxGrad -> GpuDnnSoftmaxGrad do not
         # crash with manual graph
         y = T.fvector('y')
-        o = theano.tensor.nnet.SoftmaxGrad()(y, y*2)
+        o = theano.tensor.nnet.SoftmaxGrad()(y, y * 2)
         f = theano.function([y], o, mode=mode_with_gpu)
         sorted_f = f.maker.fgraph.toposort()
         assert(len([i
@@ -542,7 +541,6 @@ class test_DnnSoftMax(test_nnet.test_SoftMax):
                         theano.tensor.nnet.SoftmaxGrad
                     )]) == 0)
 
-
     def test_log_softmax(self):
         # This is a test for an optimization that depends on CuDNN v3 or
         # more recent. Don't test if the CuDNN version is too old.

theano/sandbox/cuda/tests/test_nnet.py

@@ -9,7 +9,7 @@ import theano.tests.unittest_tools as utt
 
 # Skip test if cuda_ndarray is not available.
 import theano.sandbox.cuda as cuda
-if cuda.cuda_available == False:
+if not cuda.cuda_available:
     raise SkipTest('Optional package cuda disabled')
 
 if theano.config.mode == 'FAST_COMPILE':
@@ -39,15 +39,13 @@ def test_GpuCrossentropySoftmaxArgmax1HotWithBias():
         n_in = 4098
         n_out = 4099
 
-    x = T.fmatrix('x')
     y = T.lvector('y')
 
     b = T.fvector('b')
-    #W = T.fmatrix('W')
 
     # we precompute the dot with big shape before to allow the test of
     # GpuCrossentropySoftmax1HotWithBiasDx to don't fail with the error
-    #(the launch timed out and was terminated) on GPU card not
+    # (the launch timed out and was terminated) on GPU card not
     # powerful enough. We need the big shape to check for corner
     # case.
     dot_result = T.fmatrix('dot_result')
@@ -57,7 +55,6 @@ def test_GpuCrossentropySoftmaxArgmax1HotWithBias():
 
     xx = numpy.asarray(numpy.random.rand(batch_size, n_in),
                        dtype=numpy.float32)
-    #?????yy = numpy.ones((batch_size,),dtype='float32')
     yy = numpy.ones((batch_size,), dtype='int32')
     b_values = numpy.zeros((n_out,), dtype='float32')
     W_values = numpy.asarray(numpy.random.rand(n_in, n_out), dtype='float32')
@@ -104,12 +101,10 @@ def test_GpuCrossentropySoftmax1HotWithBiasDx():
     We check that we loop when there are too many threads
 
     """
-    n_in = 1000
     batch_size = 4097
     n_out = 1250
 
     if not isinstance(mode_with_gpu, theano.compile.DebugMode):
-        n_in = 4098
         n_out = 4099
 
     # Seed numpy.random with config.unittests.rseed

theano/tests/test_flake8.py

@@ -135,7 +135,6 @@ whitelist_flake8 = [
     "sandbox/cuda/tests/test_blas.py",
     "sandbox/cuda/tests/test_driver.py",
     "sandbox/cuda/tests/test_rng_curand.py",
-    "sandbox/cuda/tests/test_nnet.py",
     "sandbox/cuda/tests/test_basic_ops.py",
     "sandbox/cuda/tests/test_memory.py",
     "sandbox/cuda/tests/test_mlp.py",