code: def test_boolean_index_list():
      # adapted from numpy's test_indexing.py
      a = np.array([1, 2, 3], dtype=np.int32)
      b = [True, False, True]
      # Two variants of the test because the first takes a fast path
      assert same(a[b].asnumpy(), _np.array([1, 3], dtype=a.dtype))
      (a[None, b], [[1, 3]])
  
imports: from __future__ import absolute_import
  from __future__ import division
  import itertools
  import os
  import pytest
  import operator
  import numpy
  import mxnet
  from mxnet import np, npx, autograd
  from mxnet.gluon import HybridBlock
  from mxnet.test_utils import same, assert_almost_equal, rand_shape_nd, rand_ndarray, use_np
  from common import retry, TemporaryDirectory, xfail_when_nonstandard_decimal_separator
  from mxnet.test_utils import verify_generator, gen_buckets_probs_with_ppf, assert_exception, is_op_runnable, collapse_sum_like
  from mxnet.ndarray.ndarray import py_slice
  from mxnet.base import integer_types
label_desc: Use image node_id 20 for calling a global function with example usage: test_boolean_index_list() without return types