| # Copyright (c) OpenMMLab. All rights reserved. | |
| import glob | |
| import os.path as osp | |
| import warnings | |
| def find_latest_checkpoint(path, suffix='pth'): | |
| """This function is for finding the latest checkpoint. | |
| It will be used when automatically resume, modified from | |
| https://github.com/open-mmlab/mmdetection/blob/dev-v2.20.0/mmdet/utils/misc.py | |
| Args: | |
| path (str): The path to find checkpoints. | |
| suffix (str): File extension for the checkpoint. Defaults to pth. | |
| Returns: | |
| latest_path(str | None): File path of the latest checkpoint. | |
| """ | |
| if not osp.exists(path): | |
| warnings.warn("The path of the checkpoints doesn't exist.") | |
| return None | |
| if osp.exists(osp.join(path, f'latest.{suffix}')): | |
| return osp.join(path, f'latest.{suffix}') | |
| checkpoints = glob.glob(osp.join(path, f'*.{suffix}')) | |
| if len(checkpoints) == 0: | |
| warnings.warn('The are no checkpoints in the path') | |
| return None | |
| latest = -1 | |
| latest_path = '' | |
| for checkpoint in checkpoints: | |
| if len(checkpoint) < len(latest_path): | |
| continue | |
| # `count` is iteration number, as checkpoints are saved as | |
| # 'iter_xx.pth' or 'epoch_xx.pth' and xx is iteration number. | |
| count = int(osp.basename(checkpoint).split('_')[-1].split('.')[0]) | |
| if count > latest: | |
| latest = count | |
| latest_path = checkpoint | |
| return latest_path | |