fixing flake8

theano/gpuarray/subtensor.py

@@ -1204,7 +1204,7 @@ __device__ ga_half atomicExch(ga_half *addr, ga_half val) {
     new_ = __byte_perm(old, __HALF_TO_US(val), ((ga_size)addr & 2) ? 0x5410 : 0x3254);
     old = atomicCAS(base, assumed, new_);
   } while (assumed != old);
-  ga_half ret; 
+  ga_half ret;
   __HALF_TO_US(ret) =__byte_perm(old, 0,
         ((ga_size)addr & 2) ? 0x4432 : 0x4410);
   return ret;

theano/gpuarray/tests/test_dnn.py

@@ -2298,6 +2298,7 @@ class Cudnn_grouped_conv(Grouped_conv_noOptim):
     flip_filter = False
     is_dnn = True
 
+
 class Cudnn_grouped_conv3d(Grouped_conv3d_noOptim):
     mode = mode_with_gpu
     conv = staticmethod(dconvfwd)