code: def _filter_existing_files(
      filepaths: Iterable[_Path],
  ) -> Iterator[_Path]:
      for path in filepaths:
          if os.path.isfile(path):
              yield path
          else:
              SetuptoolsWarning.emit(f"File {path!r} cannot be found")
  
imports: import ast
  import importlib
  import os
  import pathlib
  import sys
  from glob import iglob
  from configparser import ConfigParser
  from importlib.machinery import ModuleSpec
  from itertools import chain
  from typing import TYPE_CHECKING, Callable, Dict, Iterable, Iterator, List, Mapping, Optional, Tuple, TypeVar, Union, cast
  from pathlib import Path
  from types import ModuleType
  from distutils.errors import DistutilsOptionError
  from .._path import same_path
  from ..warnings import SetuptoolsWarning
label_desc: Use image node_id 3 for calling a global function with example usage: _filter_existing_files(filepaths) without return types