# Copyright 2021 cstsunfu. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
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"""schedulers"""
import importlib
import os
from dlk.utils.register import Register
from torch.optim import Optimizer
from torch.optim.lr_scheduler import LambdaLR
import math
scheduler_config_register = Register("Schedule config register.")
scheduler_register = Register("Schedule register.")
[docs]class BaseScheduler(object):
"""interface for Schedule"""
[docs] def get_scheduler(self)->LambdaLR:
"""return the initialized scheduler
Returns:
Schedule
"""
raise NotImplementedError
def __call__(self):
"""the same as self.get_scheduler()
"""
return self.get_scheduler()
[docs]def import_schedulers(schedulers_dir, namespace):
for file in os.listdir(schedulers_dir):
path = os.path.join(schedulers_dir, file)
if (
not file.startswith("_")
and not file.startswith(".")
and (file.endswith(".py") or os.path.isdir(path))
):
scheduler_name = file[: file.find(".py")] if file.endswith(".py") else file
importlib.import_module(namespace + "." + scheduler_name)
# automatically import any Python files in the schedulers directory
schedulers_dir = os.path.dirname(__file__)
import_schedulers(schedulers_dir, "dlk.core.schedulers")