update conversion scripts

pytorch_transformers/__init__.py

 __version__ = "1.2.0"
+# Work around to update TensorFlow's absl.logging threshold which alters the
+# default Python logging output behavior when present.
+# see: https://github.com/abseil/abseil-py/issues/99
+# and: https://github.com/tensorflow/tensorflow/issues/26691#issuecomment-500369493
+try:
+    import absl.logging
+    absl.logging.set_verbosity('info')
+    absl.logging.set_stderrthreshold('info')
+    absl.logging._warn_preinit_stderr = False
+except:
+    pass
 
 # Tokenizer
 from .tokenization_utils import (PreTrainedTokenizer)

pytorch_transformers/convert_gpt2_checkpoint_to_pytorch.py

@@ -21,7 +21,7 @@ from io import open
 
 import torch
 
-from pytorch_transformers.modeling_gpt2 import (CONFIG_NAME, WEIGHTS_NAME,
+from pytorch_transformers import (CONFIG_NAME, WEIGHTS_NAME,
                                                      GPT2Config,
                                                      GPT2Model,
                                                      load_tf_weights_in_gpt2)

pytorch_transformers/convert_openai_checkpoint_to_pytorch.py

@@ -21,7 +21,7 @@ from io import open
 
 import torch
 
-from pytorch_transformers.modeling_openai import (CONFIG_NAME, WEIGHTS_NAME,
+from pytorch_transformers import (CONFIG_NAME, WEIGHTS_NAME,
                                                      OpenAIGPTConfig,
                                                      OpenAIGPTModel,
                                                      load_tf_weights_in_openai_gpt)

pytorch_transformers/convert_pytorch_checkpoint_to_tf.py

@@ -20,7 +20,7 @@ import argparse
 import torch
 import numpy as np
 import tensorflow as tf
-from pytorch_transformers.modeling import BertModel
+from pytorch_transformers import BertModel
 
 
 def convert_pytorch_checkpoint_to_tf(model:BertModel, ckpt_dir:str, model_name:str):

pytorch_transformers/convert_roberta_checkpoint_to_pytorch.py

@@ -23,12 +23,12 @@ import torch
 
 from fairseq.models.roberta import RobertaModel as FairseqRobertaModel
 from fairseq.modules import TransformerSentenceEncoderLayer
-from pytorch_transformers.modeling_bert import (BertConfig, BertEncoder,
+from pytorch_transformers import (BertConfig, BertEncoder,
                                                 BertIntermediate, BertLayer,
                                                 BertModel, BertOutput,
                                                 BertSelfAttention,
                                                 BertSelfOutput)
-from pytorch_transformers.modeling_roberta import (RobertaEmbeddings,
+from pytorch_transformers import (RobertaEmbeddings,
                                                    RobertaForMaskedLM,
                                                    RobertaForSequenceClassification,
                                                    RobertaModel)

pytorch_transformers/convert_tf_checkpoint_to_pytorch.py

@@ -21,7 +21,7 @@ from __future__ import print_function
 import argparse
 import torch
 
-from pytorch_transformers.modeling_bert import BertConfig, BertForPreTraining, load_tf_weights_in_bert
+from pytorch_transformers import BertConfig, BertForPreTraining, load_tf_weights_in_bert
 
 import logging
 logging.basicConfig(level=logging.INFO)

pytorch_transformers/convert_transfo_xl_checkpoint_to_pytorch.py

@@ -26,7 +26,7 @@ import torch
 import pytorch_transformers.tokenization_transfo_xl as data_utils
 
 from pytorch_transformers import CONFIG_NAME, WEIGHTS_NAME
-from pytorch_transformers.modeling_transfo_xl import (TransfoXLConfig, TransfoXLLMHeadModel,
+from pytorch_transformers import (TransfoXLConfig, TransfoXLLMHeadModel,
                                                       load_tf_weights_in_transfo_xl)
 from pytorch_transformers.tokenization_transfo_xl import (CORPUS_NAME, VOCAB_FILES_NAMES)
 

pytorch_transformers/convert_xlm_checkpoint_to_pytorch.py

@@ -23,7 +23,7 @@ from io import open
 import torch
 import numpy
 
-from pytorch_transformers.modeling_utils import CONFIG_NAME, WEIGHTS_NAME
+from pytorch_transformers import CONFIG_NAME, WEIGHTS_NAME
 from pytorch_transformers.tokenization_xlm import VOCAB_FILES_NAMES
 
 import logging

pytorch_transformers/convert_xlnet_checkpoint_to_pytorch.py

@@ -22,7 +22,7 @@ import os
 import argparse
 import torch
 
-from pytorch_transformers.modeling_xlnet import (CONFIG_NAME, WEIGHTS_NAME,
+from pytorch_transformers import (CONFIG_NAME, WEIGHTS_NAME,
                                                     XLNetConfig,
                                                     XLNetLMHeadModel, XLNetForQuestionAnswering,
                                                     XLNetForSequenceClassification,