new_contents: import os
  from typing import Iterable,List,Iterator,Set
  from isort.settings import Config
  from pathlib import Path
  
  
  def find(
      paths: Iterable[str], config: Config, skipped: List[str], broken: List[str]
  ) -> Iterator[str]:
      """Fines and provides an iterator for all Python source files defined in paths."""
      visited_dirs: Set[Path] = set()
  
      for path in paths:
          if os.path.isdir(path):
              for dirpath, dirnames, filenames in os.walk(
                  path, topdown=True, followlinks=config.follow_links
              ):
                  base_path = Path(dirpath)
                  for dirname in list(dirnames):
                      full_path = base_path / dirname
                      resolved_path = full_path.resolve()
                      if config.is_skipped(full_path):
                          skipped.append(dirname)
                          dirnames.remove(dirname)
                      else:
                          if resolved_path in visited_dirs:  # pragma: no cover
                              if not config.quiet:
                                  warn(f"Likely recursive symlink detected to {resolved_path}")
                              dirnames.remove(dirname)
                      visited_dirs.add(resolved_path)
  
                  for filename in filenames:
                      filepath = os.path.join(dirpath, filename)
                      if config.is_supported_filetype(filepath):
                          if config.is_skipped(Path(filepath)):
                              skipped.append(filename)
                          else:
                              yield filepath
          elif not os.path.exists(path):
              broken.append(path)
          else:
              yield path
  
  
subject: Add files module