fsutil.py 文件源码

def write_file(path, fcont, uid=None, gid=None, atomic=False):

    if not atomic:
        return _write_file(path, fcont, uid, gid)

    tmp_path = '{path}._tmp_.{pid}_{timestamp}'.format(
        path=path,
        pid=os.getpid(),
        timestamp=timeutil.ns(),
    )
    _write_file(tmp_path, fcont, uid, gid)

    try:
        os.rename(tmp_path, path)
    except EnvironmentError:
        os.remove(tmp_path)
        raise