code: def test_empty():
      s = pd.Series(dtype=object)
      result = s.explode()
      expected = s.copy()
      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 3 for calling a global function with example usage: test_empty() without return types