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ultralytics 8.0.136 refactor and simplify package (#3748)

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Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Glenn Jocher <glenn.jocher@ultralytics.com>
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Laughing 2023-07-16 23:47:45 +08:00 • committed by GitHub
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20
ultralytics/yolo/utils/callbacks/raytune.py
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# Ultralytics YOLO 🚀, AGPL-3.0 license
try:
import ray
from ray import tune
from ray.air import session
except (ImportError, AssertionError):
tune = None
def on_fit_epoch_end(trainer):
"""Sends training metrics to Ray Tune at end of each epoch."""
if ray.tune.is_session_enabled():
metrics = trainer.metrics
metrics['epoch'] = trainer.epoch
session.report(metrics)
callbacks = {
'on_fit_epoch_end': on_fit_epoch_end, } if tune else {}