209 lines
7.1 KiB
Python
209 lines
7.1 KiB
Python
# Copyright The PyTorch Lightning team.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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r"""
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Abstract base class used to build new callbacks.
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"""
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import abc
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from typing import Any, Dict
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from pytorch_lightning.core.lightning import LightningModule
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class Callback(abc.ABC):
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r"""
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Abstract base class used to build new callbacks.
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Subclass this class and override any of the relevant hooks
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"""
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def on_before_accelerator_backend_setup(self, trainer, pl_module: LightningModule) -> None:
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"""Called before accelerator is being setup"""
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pass
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def setup(self, trainer, pl_module: LightningModule, stage: str) -> None:
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"""Called when fit or test begins"""
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pass
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def teardown(self, trainer, pl_module: LightningModule, stage: str) -> None:
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"""Called when fit or test ends"""
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pass
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def on_init_start(self, trainer) -> None:
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"""Called when the trainer initialization begins, model has not yet been set."""
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pass
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def on_init_end(self, trainer) -> None:
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"""Called when the trainer initialization ends, model has not yet been set."""
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pass
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def on_fit_start(self, trainer, pl_module: LightningModule) -> None:
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"""Called when fit begins"""
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pass
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def on_fit_end(self, trainer, pl_module: LightningModule) -> None:
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"""Called when fit ends"""
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pass
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def on_sanity_check_start(self, trainer, pl_module: LightningModule) -> None:
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"""Called when the validation sanity check starts."""
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pass
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def on_sanity_check_end(self, trainer, pl_module: LightningModule) -> None:
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"""Called when the validation sanity check ends."""
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pass
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def on_train_batch_start(
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self, trainer, pl_module: LightningModule, batch: Any, batch_idx: int, dataloader_idx: int
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) -> None:
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"""Called when the train batch begins."""
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pass
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def on_train_batch_end(
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self, trainer, pl_module: LightningModule, outputs: Any, batch: Any, batch_idx: int, dataloader_idx: int
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) -> None:
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"""Called when the train batch ends."""
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pass
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def on_train_epoch_start(self, trainer, pl_module: LightningModule) -> None:
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"""Called when the train epoch begins."""
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pass
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def on_train_epoch_end(self, trainer, pl_module: LightningModule, outputs: Any) -> None:
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"""Called when the train epoch ends."""
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pass
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def on_validation_epoch_start(self, trainer, pl_module: LightningModule) -> None:
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"""Called when the val epoch begins."""
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pass
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def on_validation_epoch_end(self, trainer, pl_module: LightningModule) -> None:
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"""Called when the val epoch ends."""
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pass
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def on_test_epoch_start(self, trainer, pl_module: LightningModule) -> None:
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"""Called when the test epoch begins."""
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pass
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def on_test_epoch_end(self, trainer, pl_module: LightningModule) -> None:
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"""Called when the test epoch ends."""
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pass
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def on_epoch_start(self, trainer, pl_module: LightningModule) -> None:
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"""Called when the epoch begins."""
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pass
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def on_epoch_end(self, trainer, pl_module: LightningModule) -> None:
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"""Called when the epoch ends."""
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pass
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def on_batch_start(self, trainer, pl_module: LightningModule) -> None:
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"""Called when the training batch begins."""
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pass
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def on_validation_batch_start(
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self, trainer, pl_module: LightningModule, batch: Any, batch_idx: int, dataloader_idx: int
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) -> None:
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"""Called when the validation batch begins."""
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pass
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def on_validation_batch_end(
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self, trainer, pl_module: LightningModule, outputs: Any, batch: Any, batch_idx: int, dataloader_idx: int
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) -> None:
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"""Called when the validation batch ends."""
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pass
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def on_test_batch_start(
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self, trainer, pl_module: LightningModule, batch: Any, batch_idx: int, dataloader_idx: int
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) -> None:
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"""Called when the test batch begins."""
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pass
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def on_test_batch_end(
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self, trainer, pl_module: LightningModule, outputs: Any, batch: Any, batch_idx: int, dataloader_idx: int
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) -> None:
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"""Called when the test batch ends."""
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pass
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def on_batch_end(self, trainer, pl_module: LightningModule) -> None:
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"""Called when the training batch ends."""
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pass
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def on_train_start(self, trainer, pl_module: LightningModule) -> None:
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"""Called when the train begins."""
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pass
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def on_train_end(self, trainer, pl_module: LightningModule) -> None:
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"""Called when the train ends."""
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pass
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def on_pretrain_routine_start(self, trainer, pl_module: LightningModule) -> None:
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"""Called when the pretrain routine begins."""
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pass
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def on_pretrain_routine_end(self, trainer, pl_module: LightningModule) -> None:
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"""Called when the pretrain routine ends."""
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pass
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def on_validation_start(self, trainer, pl_module: LightningModule) -> None:
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"""Called when the validation loop begins."""
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pass
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def on_validation_end(self, trainer, pl_module: LightningModule) -> None:
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"""Called when the validation loop ends."""
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pass
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def on_test_start(self, trainer, pl_module: LightningModule) -> None:
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"""Called when the test begins."""
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pass
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def on_test_end(self, trainer, pl_module: LightningModule) -> None:
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"""Called when the test ends."""
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pass
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def on_keyboard_interrupt(self, trainer, pl_module: LightningModule) -> None:
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"""Called when the training is interrupted by ``KeyboardInterrupt``."""
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pass
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def on_save_checkpoint(self, trainer, pl_module: LightningModule, checkpoint: Dict[str, Any]) -> dict:
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"""
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Called when saving a model checkpoint, use to persist state.
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Args:
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trainer: the current Trainer instance.
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pl_module: the current LightningModule instance.
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checkpoint: the checkpoint dictionary that will be saved.
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Returns:
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The callback state.
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"""
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pass
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def on_load_checkpoint(self, callback_state: Dict[str, Any]) -> None:
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"""Called when loading a model checkpoint, use to reload state.
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Args:
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callback_state: the callback state returned by ``on_save_checkpoint``.
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"""
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pass
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def on_after_backward(self, trainer, pl_module: LightningModule) -> None:
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"""Called after ``loss.backward()`` and before optimizers do anything."""
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pass
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def on_before_zero_grad(self, trainer, pl_module: LightningModule, optimizer) -> None:
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"""Called after ``optimizer.step()`` and before ``optimizer.zero_grad()``."""
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pass
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