code: def test_get():
      ser = Series(["a_b_c", "c_d_e", np.nan, "f_g_h"])
      result = ser.str.split("_").str.get(1)
      expected = Series(["b", "d", np.nan, "g"], dtype=object)
      tm.assert_series_equal(result, expected)
  
imports: from datetime import datetime
  import re
  import numpy
  import pytest
  import pandas
  from pandas import DataFrame, Index, MultiIndex, Series, _testing
  from pandas.tests.strings import _convert_na_value, object_pyarrow_numpy
label_desc: Use image node_id 44 for calling a global function with example usage: test_get() without return types