code: def test_to_sequence_error_for_operand_with_sequence_axis():
      x = C.sequence.input_variable(C.FreeDimension, 2)
      with pytest.raises(ValueError):
          op = C.to_sequence(x)
  
imports: from __future__ import division
  import numpy
  import pytest
  import cntk
  from .ops_test_utils import cntk_device
  from cntk.tests.test_utils import _to_dense, _to_csr
  from .ops_test_utils import unittest_helper, _test_unary_op, _test_binary_op, AA, precision, PRECISION_TO_TYPE, cntk_device
  from cntk import Value
  from cntk.axis import Axis
  from cntk.internal import sanitize_dtype_cntk
  from ..None import constant
label_desc: Use image node_id 15 for calling a global function with example usage: test_to_sequence_error_for_operand_with_sequence_axis() without return types