code: def test_from_product_respects_none_names():
      # GH27292
      a = Series([1, 2, 3], name="foo")
      b = Series(["a", "b"], name="bar")
  
      result = MultiIndex.from_product([a, b], names=None)
      expected = MultiIndex(
          levels=[[1, 2, 3], ["a", "b"]],
          codes=[[0, 0, 1, 1, 2, 2], [0, 1, 0, 1, 0, 1]],
          names=None,
      )
      tm.assert_index_equal(result, expected)
  
imports: from datetime import date, datetime
  import itertools
  import numpy
  import pytest
  from pandas.core.dtypes.cast import construct_1d_object_array_from_listlike
  import pandas
  from pandas import Index, MultiIndex, Series, Timestamp, date_range
  import pandas._testing
label_desc: Use image node_id 34 for calling a global function with example usage: test_from_product_respects_none_names() without return types