code: def test_getitem_str_month_with_datetimeindex():
      # GH3546 (not including times on the last day)
      idx = date_range(
          start="2013-05-31 00:00", end="2013-05-31 23:00", freq="h"
      )
      ts = Series(range(len(idx)), index=idx)
      expected = ts["2013-05"]
      tm.assert_series_equal(expected, ts)
  
      idx = date_range(
          start="2013-05-31 00:00", end="2013-05-31 23:59", freq="s"
      )
      ts = Series(range(len(idx)), index=idx)
      expected = ts["2013-05"]
      tm.assert_series_equal(expected, ts)
  
imports: from datetime import datetime, timedelta
  import re
  from dateutil.tz import gettz, tzutc
  import numpy
  import pytest
  import pytz
  from pandas._libs import index
  import pandas
  from pandas import DataFrame, Series, Timestamp, date_range, period_range
  import pandas._testing
label_desc: Use image node_id 13 for calling a global function with example usage: test_getitem_str_month_with_datetimeindex() without return types