old_contents: __version__ = "0.5.0"
  from .tokenization import BertTokenizer, BasicTokenizer, WordpieceTokenizer
  from .tokenization_openai import OpenAIGPTTokenizer
  from .tokenization_transfo_xl import (TransfoXLTokenizer, TransfoXLCorpus)
  
  from .modeling import (BertConfig, BertModel, BertForPreTraining,
                         BertForMaskedLM, BertForNextSentencePrediction,
                         BertForSequenceClassification, BertForMultipleChoice,
                         BertForTokenClassification, BertForQuestionAnswering)
  from .modeling_openai import (OpenAIGPTConfig, OpenAIGPTModel,
                                OpenAIGPTLMHeadModel, OpenAIGPTDoubleHeadsModel)
  from .modeling_transfo_xl import (TransfoXLConfig, TransfoXLModel)
  
  from .optimization import BertAdam
  from .optimization_openai import OpenAIAdam
  
  from .convert_openai_checkpoint_to_pytorch import load_tf_weights_in_openai_gpt
  from .convert_tf_checkpoint_to_pytorch import load_tf_weights_in_bert
  from .convert_transfo_xl_checkpoint_to_pytorch import load_tf_weights_in_transfo_xl
  from .file_utils import PYTORCH_PRETRAINED_BERT_CACHE
  
new_contents: __version__ = "0.5.0"
  from .tokenization import BertTokenizer, BasicTokenizer, WordpieceTokenizer
  from .tokenization_openai import OpenAIGPTTokenizer
  from .tokenization_transfo_xl import (TransfoXLTokenizer, TransfoXLCorpus)
  
  from .modeling import (BertConfig, BertModel, BertForPreTraining,
                         BertForMaskedLM, BertForNextSentencePrediction,
                         BertForSequenceClassification, BertForMultipleChoice,
                         BertForTokenClassification, BertForQuestionAnswering,
                         load_tf_weights_in_bert)
  from .modeling_openai import (OpenAIGPTConfig, OpenAIGPTModel,
                                OpenAIGPTLMHeadModel, OpenAIGPTDoubleHeadsModel,
                                load_tf_weights_in_openai_gpt)
  from .modeling_transfo_xl import (TransfoXLConfig, TransfoXLModel,
                                    load_tf_weights_in_transfo_xl)
  
  from .optimization import BertAdam
  from .optimization_openai import OpenAIAdam
  
  from .file_utils import PYTORCH_PRETRAINED_BERT_CACHE
  
subject: update __init__