1  from typing import Optional, Sequence, Tuple
   2  
   3  def copy_file(
   4      src: str,
   5      dst: str,
   6      preserve_mode: bool = ...,
   7      preserve_times: bool = ...,
   8      update: bool = ...,
   9      link: Optional[str] = ...,
  10      verbose: bool = ...,
  11      dry_run: bool = ...,
  12  ) -> Tuple[str, str]: ...
  13  def move_file(src: str, dst: str, verbose: bool = ..., dry_run: bool = ...) -> str: ...
  14  def write_file(filename: str, contents: Sequence[str]) -> None: ...
  15