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[NFC] polish applications/Chat/coati/dataset/sft_dataset.py code style (#4259)

pull/4338/head
Zheng Zangwei (Alex Zheng) 2023-07-18 10:59:38 +08:00 committed by binmakeswell
parent abe4f971e0
commit b2debdc09b
1 changed files with 9 additions and 11 deletions
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20
applications/Chat/coati/dataset/sft_dataset.py
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@ -74,15 +74,10 @@ class SFTDataset(Dataset):
return dict(input_ids=self.input_ids[idx], labels=self.labels[idx]) return dict(input_ids=self.input_ids[idx], labels=self.labels[idx])
def _tokenize_fn(strings: Sequence[str], def _tokenize_fn(strings: Sequence[str], tokenizer: transformers.PreTrainedTokenizer,
tokenizer: transformers.PreTrainedTokenizer, max_length: int) -> Dict[str, torch.Tensor]:
max_length: int
) -> Dict[str, torch.Tensor]:
"""Tokenize a list of strings.""" """Tokenize a list of strings."""
tokenized_list = tokenizer( tokenized_list = tokenizer(strings, return_tensors="pt", padding="longest", max_length=max_length, truncation=True)
strings, return_tensors="pt", padding="longest",
max_length=max_length, truncation=True
)
input_ids = labels = tokenized_list["input_ids"] input_ids = labels = tokenized_list["input_ids"]
input_ids_lens = labels_lens = \ input_ids_lens = labels_lens = \
tokenized_list["input_ids"].ne(tokenizer.pad_token_id).sum(dim=-1) tokenized_list["input_ids"].ne(tokenizer.pad_token_id).sum(dim=-1)
@ -103,8 +98,7 @@ def preprocess(
"""Preprocess the data by tokenizing.""" """Preprocess the data by tokenizing."""
examples = [s + t for s, t in zip(sources, targets)] examples = [s + t for s, t in zip(sources, targets)]
examples_tokenized, sources_tokenized = [ examples_tokenized, sources_tokenized = [
_tokenize_fn(strings, tokenizer, max_length) _tokenize_fn(strings, tokenizer, max_length) for strings in (examples, sources)
for strings in (examples, sources)
] ]
input_ids = examples_tokenized["input_ids"] input_ids = examples_tokenized["input_ids"]
labels = copy.deepcopy(input_ids) labels = copy.deepcopy(input_ids)
@ -116,7 +110,11 @@ def preprocess(
class SupervisedDataset(Dataset): class SupervisedDataset(Dataset):
"""Dataset for supervised fine-tuning.""" """Dataset for supervised fine-tuning."""
def __init__(self, data_path: str, tokenizer: transformers.PreTrainedTokenizer, max_datasets_size: int = None, max_length: int = 512): def __init__(self,
data_path: str,
tokenizer: transformers.PreTrainedTokenizer,
max_datasets_size: int = None,
max_length: int = 512):
super(SupervisedDataset, self).__init__() super(SupervisedDataset, self).__init__()
logger.info("Loading data...") logger.info("Loading data...")
list_data_dict = jload(data_path) list_data_dict = jload(data_path)