convertion script WIP

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thomwolf committed 2018-11-01 18:00:20 +01:00
1 parent 5581edb4f6
commit ab0e8932a8
2 files changed
+25 -20

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+15 -10
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@@ -10,7 +10,7 @@ import argparse
import tensorflow as tf
import torch
from .modeling_pytorch import BertConfig, BertModel
from modeling_pytorch import BertConfig, BertModel
parser = argparse.ArgumentParser()
@@ -35,6 +35,10 @@ parser.add_argument("--pytorch_dump_path",
args = parser.parse_args()
def convert():
# Initialise PyTorch model
config = BertConfig.from_json_file(args.bert_config_file)
model = BertModel(config)
# Load weights from TF model
path = args.tf_checkpoint_path
print("Converting TensorFlow checkpoint from {}".format(path))
@@ -49,24 +53,26 @@ def convert():
names.append(name)
arrays.append(array)
# Initialise PyTorch model and fill weights-in
config = BertConfig.from_json_file(args.bert_config_file)
model = BertModel(config)
for name, array in zip(names, arrays):
name = name[5:] # skip "bert/"
assert name[-2:] == ":0"
name = name[:-2]
name = name.split('/')
pointer = model
for m_name in name:
if re.fullmatch(r'[A-Za-z]+\d+', m_name):
l = re.split(r'(\d+)', m_name)
if re.fullmatch(r'[A-Za-z]+_\d+', m_name):
l = re.split(r'_(\d+)', m_name)
else:
l = [m_name]
pointer = getattr(pointer, l[0])
if l[0] == 'kernel':
pointer = getattr(pointer, 'weight')
else:
pointer = getattr(pointer, l[0])
if len(l) >= 2:
num = int(l[1])
pointer = pointer[num]
if m_name[-11:] == '_embeddings':
pointer = getattr(pointer, 'weight')
# elif m_name == 'kernel':
# pointer = getattr(pointer, 'weight')
try:
assert pointer.shape == array.shape
except AssertionError as e:
@@ -79,4 +85,3 @@ def convert():
if __name__ == "__main__":
convert()
return None