# Copyright 2020,2021 Sony Corporation.
# Copyright 2021,2022,2023 Sony Group Corporation.
#
# 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,
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from nnabla_rl.hook import Hook
from nnabla_rl.logger import logger
[docs]class IterationNumHook(Hook):
"""Hook to print the iteration number periodically. This hook just prints
the iteration number of training.
Args:
timing (int): Printing interval. Defaults to 1 iteration.
"""
def __init__(self, timing=1):
super(IterationNumHook, self).__init__(timing=timing)
[docs] def on_hook_called(self, algorithm):
logger.info("current iteration: {}".format(algorithm.iteration_num))