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fixed loading pre-trained tokenizer from directory

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This commit is contained in:
thomwolf 2018-11-30 14:09:06 +01:00
parent 532a81d3d6
commit d6f06c03f4
2 changed files with 15 additions and 12 deletions
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2
pytorch_pretrained_bert/modeling.py
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@ -478,7 +478,7 @@ class PreTrainedBertModel(nn.Module):
"associated to this path or url.".format(
pretrained_model_name,
', '.join(PRETRAINED_MODEL_ARCHIVE_MAP.keys()),
pretrained_model_name))
archive_file))
return None
if resolved_archive_file == archive_file:
logger.info("loading archive file {}".format(archive_file))

25
pytorch_pretrained_bert/tokenization.py
View File

@ -39,6 +39,7 @@ PRETRAINED_VOCAB_ARCHIVE_MAP = {
'bert-base-multilingual-cased': "https://s3.amazonaws.com/models.huggingface.co/bert/bert-base-multilingual-cased-vocab.txt",
'bert-base-chinese': "https://s3.amazonaws.com/models.huggingface.co/bert/bert-base-chinese-vocab.txt",
}
VOCAB_NAME = 'vocab.txt'
def load_vocab(vocab_file):
@ -100,7 +101,7 @@ class BertTokenizer(object):
return tokens
@classmethod
def from_pretrained(cls, pretrained_model_name, do_lower_case=True):
def from_pretrained(cls, pretrained_model_name, cache_dir=None, *inputs, **kwargs):
"""
Instantiate a PreTrainedBertModel from a pre-trained model file.
Download and cache the pre-trained model file if needed.
@ -109,16 +110,11 @@ class BertTokenizer(object):
vocab_file = PRETRAINED_VOCAB_ARCHIVE_MAP[pretrained_model_name]
else:
vocab_file = pretrained_model_name
if os.path.isdir(vocab_file):
vocab_file = os.path.join(vocab_file, VOCAB_NAME)
# redirect to the cache, if necessary
try:
resolved_vocab_file = cached_path(vocab_file)
if resolved_vocab_file == vocab_file:
logger.info("loading vocabulary file {}".format(vocab_file))
else:
logger.info("loading vocabulary file {} from cache at {}".format(
vocab_file, resolved_vocab_file))
# Instantiate tokenizer.
tokenizer = cls(resolved_vocab_file, do_lower_case)
resolved_vocab_file = cached_path(vocab_file, cache_dir=cache_dir)
except FileNotFoundError:
logger.error(
"Model name '{}' was not found in model name list ({}). "
@ -126,8 +122,15 @@ class BertTokenizer(object):
"associated to this path or url.".format(
pretrained_model_name,
', '.join(PRETRAINED_VOCAB_ARCHIVE_MAP.keys()),
pretrained_model_name))
tokenizer = None
vocab_file))
return None
if resolved_vocab_file == vocab_file:
logger.info("loading vocabulary file {}".format(vocab_file))
else:
logger.info("loading vocabulary file {} from cache at {}".format(
vocab_file, resolved_vocab_file))
# Instantiate tokenizer.
tokenizer = cls(resolved_vocab_file, *inputs, **kwargs)
return tokenizer