code: def test_append_empty_frame_to_series_with_dateutil_tz(self):
      # GH 23682
      date = Timestamp("2018-10-24 07:30:00", tz=dateutil.tz.tzutc())
      ser = Series({"a": 1.0, "b": 2.0, "date": date})
      df = DataFrame(columns=["c", "d"])
      result_a = df._append(ser, ignore_index=True)
      expected = DataFrame(
          [[np.nan, np.nan, 1.0, 2.0, date]],
          columns=["c", "d", "a", "b", "date"],
      )
      # These columns get cast to object after append
      expected["c"] = expected["c"].astype(object)
      expected["d"] = expected["d"].astype(object)
      tm.assert_frame_equal(result_a, expected)
  
      expected = DataFrame(
          [[np.nan, np.nan, 1.0, 2.0, date]] * 2,
          columns=["c", "d", "a", "b", "date"],
      )
      expected["c"] = expected["c"].astype(object)
      expected["d"] = expected["d"].astype(object)
      result_b = result_a._append(ser, ignore_index=True)
      tm.assert_frame_equal(result_b, expected)
  
      result = df._append([ser, ser], ignore_index=True)
      tm.assert_frame_equal(result, expected)
  
imports: import datetime
  from itertools import combinations
  import dateutil
  import numpy
  import pytest
  import pandas
  from pandas import DataFrame, Index, Series, Timestamp, concat, isna
  import pandas._testing
label_desc: Use image node_id 15 for calling the TestAppend obj's underlying member method code with example usage: obj.test_append_empty_frame_to_series_with_dateutil_tz() without return types