in_place.py 文件源码

def copystats(from_file, to_file):
    """
    Copy stat info from ``from_file`` to ``to_file`` using `shutil.copystat`.
    If possible, also copy the user and/or group ownership information.
    """
    shutil.copystat(from_file, to_file)
    if hasattr(os, 'chown'):
        st = os.stat(from_file)
        # Based on GNU sed's behavior:
        try:
            os.chown(to_file, st.st_uid, st.st_gid)
        except EnvironmentError:
            try:
                os.chown(to_file, -1, st.st_gid)
            except EnvironmentError:
                pass