code: def test_mixed_type():
      s = pd.Series(
          [
              [0, 1, 2],
              np.nan,
              None,
              np.array([]),
              pd.Series(["a", "b"]),
          ],
          name="foo",
      )
      result = s.explode()
      expected = pd.Series(
          [0, 1, 2, np.nan, None, np.nan, "a", "b"],
          index=[0, 0, 0, 1, 2, 3, 4, 4],
          dtype=object,
          name="foo",
      )
      tm.assert_series_equal(result, expected)
  
file_path: pandas/pandas/tests/series/methods/test_explode.py
imports: import numpy
  import pytest
  import pandas
  import pandas._testing
label_desc: Use image node_id 2 for calling a global function with example usage: test_mixed_type() without return types