code: def test_slice_reduce_to_series(self):
      # GH 27516
      df = DataFrame(
          {"A": range(24)},
          index=date_range("2000", periods=24, freq="ME"),
      )
      expected = Series(
          range(12),
          index=date_range("2000", periods=12, freq="ME"),
          name="A",
      )
      result = df.loc["2000", "A"]
      tm.assert_series_equal(result, expected)
  
imports: from datetime import datetime
  import numpy
  import pytest
  from pandas import DataFrame, DatetimeIndex, Index, MultiIndex, Series, Timedelta, Timestamp, date_range
  import pandas._testing
label_desc: Use image node_id 21 for calling the TestSlicing obj's underlying member method code with example usage: obj.test_slice_reduce_to_series() without return types