code: def test_incsub_offset():
      # Test for https://github.com/Theano/Theano/issues/5670
  
      # Build a GPU variable which value will have an offset (x1)
      x = gpuarray_shared_constructor(
          np.zeros(5, dtype=theano.config.floatX)
      )
      x1 = x[1:]
      # Use inc_subtensor on it
      y = tensor.vector()
      z = tensor.inc_subtensor(x1[2:], y)
      # Use updates so that inc_subtensor can happen inplace
      f = theano.function([y], z, updates={x: z}, mode=mode_with_gpu)
      utt.assert_allclose(
          f([1, 2]), np.array([0, 0, 1, 2], dtype=theano.config.floatX)
      )
  
imports: from __future__ import absolute_import, print_function, division
  import numpy
  import unittest
  import theano
  from theano import tensor
  from theano.compile import DeepCopyOp
  from theano.tensor.tests import test_subtensor, test_basic
  from theano.tests import unittest_tools
  from ..basic_ops import HostFromGpu, GpuFromHost, GpuContiguous
  from ..elemwise import GpuDimShuffle
  from ..subtensor import GpuIncSubtensor, GpuSubtensor, GpuAdvancedSubtensor1, GpuAdvancedSubtensor, GpuAdvancedBooleanSubtensor, GpuAdvancedIncSubtensor, GpuAdvancedIncSubtensor1, GpuAdvancedIncSubtensor1_dev20, GpuExtractDiag, GpuAllocDiag
  from ..type import gpuarray_shared_constructor
  from .config import mode_with_gpu, test_ctx_name
label_desc: Use image node_id 6 for calling a global function with example usage: test_incsub_offset() without return types