code: def test_by_label_list():
      ca = ColumnAccessor(
          {"a": [1, 2, 3], "b": [2, 3, 4], "c": [3, 4, 5]}
      )
      expect = ColumnAccessor({"b": [2, 3, 4], "c": [3, 4, 5]})
      got = ca.select_by_label(["b", "c"])
      check_ca_equal(expect, got)
  
imports: import pandas
  import pytest
  import cudf
  from cudf.core.column_accessor import ColumnAccessor
  from cudf.testing._utils import assert_eq
label_desc: Use image node_id 15 for calling a global function with example usage: test_by_label_list() without return types