38 lines
972 B
Python
38 lines
972 B
Python
"""Module for PINA Torch Optimizer"""
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import torch
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try:
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from torch.optim.lr_scheduler import LRScheduler # torch >= 2.0
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except ImportError:
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from torch.optim.lr_scheduler import (
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_LRScheduler as LRScheduler,
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) # torch < 2.0
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from ..utils import check_consistency
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from .optimizer_interface import Optimizer
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from .scheduler_interface import Scheduler
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class TorchScheduler(Scheduler):
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def __init__(self, scheduler_class, **kwargs):
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check_consistency(scheduler_class, LRScheduler, subclass=True)
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self.scheduler_class = scheduler_class
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self.kwargs = kwargs
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self._scheduler_instance = None
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def hook(self, optimizer):
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check_consistency(optimizer, Optimizer)
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self._scheduler_instance = self.scheduler_class(
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optimizer.instance, **self.kwargs
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)
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@property
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def instance(self):
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"""
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Scheduler instance.
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"""
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return self._scheduler_instance
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