latest_checkpoint

Return the file under root matching glob_pattern with the largest key(path), or None.

def latest_checkpoint(
    root: pathlib.Path,
    glob_pattern: str = "**/last.ckpt",
    key: Callable[[pathlib.Path], Any] | None = None
) - > pathlib.Path | None

Return the file under root matching glob_pattern with the largest key(path), or None. By default key is lambda p: p.stat().st_mtime (newest modification time wins). Pass key to rank matches another way (e.g. parse a step from the filename). For example, the Lightning framework would use **/last.ckpt under the tree restored by flyte.Checkpoint.load_sync / flyte.Checkpoint.load. Pass a different glob_pattern for other layouts (e.g. "**/*.ckpt").

Parameters

Name	Type	Description
root	pathlib.Path	The root directory to search for checkpoint files.
glob_pattern	str = "**/last.ckpt"	The glob pattern to match checkpoint files within the root directory. Defaults to "**/last.ckpt".
key	`Callable[[pathlib.Path], Any]	None` = None

Returns

Type	Description
`pathlib.Path	None`