image-match/python/py/Lib/site-packages/ray/tune/execution/cluster_info.py

from functools import lru_cache
from pathlib import Path


@lru_cache()
def _is_ray_cluster():
    """Checks if the bootstrap config file exists.

    This will always exist if using an autoscaling cluster/started
    with the ray cluster launcher.
    """
    return Path("~/ray_bootstrap_config.yaml").expanduser().exists()