Source code for gluonts.torch.model.lightning_util

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# Licensed under the Apache License, Version 2.0 (the "License").
# You may not use this file except in compliance with the License.
# A copy of the License is located at
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#     http://www.apache.org/licenses/LICENSE-2.0
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# or in the "license" file accompanying this file. This file is distributed
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from packaging import version

import pytorch_lightning as pl


[docs]def has_validation_loop(trainer: pl.Trainer):
    if version.parse(pl.__version__) < version.parse("2.0.0"):
        return trainer._data_connector._val_dataloader_source.is_defined()
    return trainer.fit_loop.epoch_loop.val_loop._data_source.is_defined()