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| # Copyright (c) 2024 Bytedance Ltd. and/or its affiliates | |
| # | |
| # 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 | |
| # limitations under the License. | |
| import torch.nn as nn | |
| import importlib | |
| def zero_module(module): | |
| if isinstance(module, nn.Linear): | |
| module.weight.data.zero_() | |
| if module.bias is not None: | |
| module.bias.data.zero_() | |
| return module | |
| def get_obj_from_str(string, reload=False): | |
| module, cls = string.rsplit(".", 1) | |
| if reload: | |
| module_imp = importlib.import_module(module) | |
| importlib.reload(module_imp) | |
| return getattr(importlib.import_module(module, package=None), cls) | |
| def instantiate_from_config(config): | |
| if not "target" in config: | |
| if config == '__is_first_stage__': | |
| return None | |
| elif config == "__is_unconditional__": | |
| return None | |
| raise KeyError("Expected key `target` to instantiate.") | |
| return get_obj_from_str(config["target"])(**config.get("params", dict())) | |
| def update_dict(old_dict, new_dict): | |
| old_keys = old_dict.keys() | |
| for new_key in new_dict.keys(): | |
| if new_key in old_keys: | |
| if type(old_dict[new_key]) == list: | |
| if type(new_dict[new_key]) == list: | |
| old_dict[new_key].extend(new_dict[new_key]) | |
| else: | |
| old_dict[new_key].append(new_dict[new_key]) | |
| else: | |
| old_dict[new_key] = [old_dict[new_key]] | |
| old_dict[new_key].append(new_dict[new_key]) | |
| else: | |
| old_dict[new_key] = new_dict[new_key] | |
| return old_dict |