code: def test_findall_mixed_object():
      ser = Series(
          [
              "fooBAD__barBAD",
              np.nan,
              "foo",
              True,
              datetime.today(),
              "BAD",
              None,
              1,
              2.0,
          ]
      )
  
      result = ser.str.findall("BAD[_]*")
      expected = Series(
          [
              ["BAD__", "BAD"],
              np.nan,
              [],
              np.nan,
              np.nan,
              ["BAD"],
              None,
              np.nan,
              np.nan,
          ]
      )
  
      tm.assert_series_equal(result, expected)
  
imports: from datetime import datetime
  import re
  import numpy
  import pytest
  from pandas.errors import PerformanceWarning
  import pandas.util._test_decorators
  import pandas
  from pandas import Series, _testing
  from pandas.tests.strings import _convert_na_value, object_pyarrow_numpy
label_desc: Use image node_id 41 for calling a global function with example usage: test_findall_mixed_object() without return types