code: def test_row_vector_from_list():
      assert is_row_vector(np.array([0]))
  
imports: import pytest
  import numpy
  from sklearn_evaluation.util import _can_iterate, is_column_vector, is_row_vector, _group_by, _product, _mapping_to_tuple_pairs, map_parameters_in_fn_call
label_desc: Use image node_id 7 for calling a global function with example usage: test_row_vector_from_list() without return types