# on_pretrain_routine_end
---
:::ultralytics.yolo.utils.callbacks.hub.on_pretrain_routine_end
# on_fit_epoch_end
---
:::ultralytics.yolo.utils.callbacks.hub.on_fit_epoch_end
# on_model_save
---
:::ultralytics.yolo.utils.callbacks.hub.on_model_save
# on_train_end
---
:::ultralytics.yolo.utils.callbacks.hub.on_train_end
# on_train_start
---
:::ultralytics.yolo.utils.callbacks.hub.on_train_start
# on_val_start
---
:::ultralytics.yolo.utils.callbacks.hub.on_val_start
# on_predict_start
---
:::ultralytics.yolo.utils.callbacks.hub.on_predict_start
# on_export_start
---
:::ultralytics.yolo.utils.callbacks.hub.on_export_start