| |
| |
| import inspect |
| from types import FunctionType, MethodType |
| from typing import List, Union |
|
|
| from peft import PeftModel |
| from torch.nn import Module |
|
|
| from swift.utils import get_logger |
|
|
| logger = get_logger() |
|
|
|
|
| def can_return_loss(model: Module) -> bool: |
| """Check if a given model can return loss.""" |
| if isinstance(model, PeftModel): |
| signature = inspect.signature(model.model.forward) |
| else: |
| signature = inspect.signature(model.forward) |
| for p in signature.parameters: |
| if p == 'return_loss' and signature.parameters[p].default is True: |
| return True |
| return False |
|
|
|
|
| def find_labels(model: Module) -> List[str]: |
| """Find the labels used by a given model.""" |
| model_name = model.__class__.__name__ |
| if isinstance(model, PeftModel): |
| signature = inspect.signature(model.model.forward) |
| else: |
| signature = inspect.signature(model.forward) |
| if 'QuestionAnswering' in model_name: |
| return [p for p in signature.parameters if 'label' in p or p in ('start_positions', 'end_positions')] |
| else: |
| return [p for p in signature.parameters if 'label' in p] |
|
|
|
|
| def get_function(method_or_function: Union[MethodType, FunctionType]) -> FunctionType: |
| if isinstance(method_or_function, MethodType): |
| method_or_function = method_or_function.__func__ |
| return method_or_function |
|
|
|
|
| def is_instance_of_ms_model(model: Module) -> bool: |
| """avoid import modelscope: circular dependency problem""" |
| for m_cls in model.__class__.__mro__: |
| cls_name = m_cls.__name__ |
| cls_module = m_cls.__module__ |
| if cls_name == 'Model' and cls_module.startswith('modelscope'): |
| return True |
| return False |
|
|
