code: def test_slice_month(self):
      dti = date_range(
          freq="D", start=datetime(2005, 1, 1), periods=500
      )
      s = Series(np.arange(len(dti)), index=dti)
      assert len(s["2005-11"]) == 30
  
      df = DataFrame(
          np.random.default_rng(2).random((len(dti), 5)), index=dti
      )
      assert len(df.loc["2005-11"]) == 30
  
      tm.assert_series_equal(s["2005-11"], s["11-2005"])
  
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 9 for calling the TestSlicing obj's underlying member method code with example usage: obj.test_slice_month() without return types