import logging

import typing

from typing import List

from transformers import BertTokenizer

from logging import getLogger

logger = getLogger(__name__)

try:

  from transformers import BertTokenizer

except ModuleNotFoundError:

  logger.warning(

      "HuggingFace transformers is not available. Please install using 'pip install transformers' to use the SmilesTokenizer")

  logger.warning("HuggingFace transformers is not available. Please install using 'pip install transformers' to use the SmilesTokenizer")

  print("HuggingFace transformers is not available. Please install using 'pip install transformers' to use the SmilesTokenizer.")

  pass

"""

SMI_REGEX_PATTERN: str

    SMILES regex pattern for tokenization. Designed by Schwaller et. al.