code: def test_capitalize(data, expected, any_string_dtype):
      s = Series(data, dtype=any_string_dtype)
      result = s.str.capitalize()
      expected = Series(expected, dtype=any_string_dtype)
      tm.assert_series_equal(result, expected)
  
imports: from datetime import datetime
  import operator
  import numpy
  import pytest
  from pandas import Series, _testing
label_desc: Use image node_id 5 for calling a global function with example usage: test_capitalize(data, expected, any_string_dtype) without return types