import torch
from transformers import BertModel, BertTokenizer, BertConfig

tokenizer = BertTokenizer.from_pretrained('bert-base-chinese')
config = BertConfig.from_pretrained('bert-base-chinese')
config.update({'output_hidden_states':True}) # 这里直接更改模型配置
model = BertModel.from_pretrained("bert-base-chinese",config=config)