test_gemmcorr3d.py has been modified in order to respect the flake8 style.

theano/sandbox/cuda/tests/test_gemmcorr3d.py

 from __future__ import absolute_import, print_function, division
 import unittest
 import numpy
-import copy
 
 import theano
 from theano.tests import unittest_tools as utt
 
 # Skip tests if cuda_ndarray is not available.
 from nose.plugins.skip import SkipTest
-import theano.sandbox.cuda as cuda_ndarray
-if not cuda_ndarray.cuda_available:
-    raise SkipTest('Optional package cuda not available')
 from theano.sandbox.cuda import float32_shared_constructor as shared
 from theano.sandbox.cuda.blas import (
     GpuCorr3dMM, GpuCorr3dMM_gradWeights, GpuCorr3dMM_gradInputs)
 from theano.sandbox.cuda.basic_ops import gpu_contiguous
+import theano.sandbox.cuda as cuda_ndarray
+if not cuda_ndarray.cuda_available:
+    raise SkipTest('Optional package cuda not available')
 
 if theano.config.mode == 'FAST_COMPILE':
     mode_with_gpu = theano.compile.mode.get_mode('FAST_RUN').including('gpu')
@@ -122,7 +121,9 @@ class TestCorr3DMM(unittest.TestCase):
         inputs = shared(inputs_val)
         filters = shared(filters_val)
         bias = shared(numpy.zeros(filters_shape[4]).astype('float32'))
-        conv = theano.tensor.nnet.convTransp3D(W=filters, b=bias, d=subsample,
+        conv = theano.tensor.nnet.convTransp3D(W=filters,
+                                               b=bias,
+                                               d=subsample,
                                                H=inputs)
         f_ref = theano.function([], conv)
         res_ref = f_ref()