tokenizer.save_pretrained('tokenizer') # 存储
tokenizer = BertTokenizerFast.from_pretrained('tokenizer') # 加载,BertTokenizerFast替换成对应的tokenizer
tokenizer.save_pretrained('tokenizer') # 存储
tokenizer = BertTokenizerFast.from_pretrained('tokenizer') # 加载,BertTokenizerFast替换成对应的tokenizer