code: def hash_string(text):
      """Applies SHA256 text hashing.
  
      Args:
          text (str): The string value
  
      Returns:
          sha_signature: Hashed text
      """
      sha_signature = hashlib.sha256(text.encode()).hexdigest()
      return sha_signature
  
imports: import hashlib
  import logging
  from functools import reduce
  from typing import Optional, Union
  import warnings
  from data_describe.misc.logging import OutputLogger
  from data_describe.backends import _get_compute_backend
  from data_describe.compat import _is_dataframe, _compat, _requires
  from data_describe.config._config import get_option
  from data_describe._widget import BaseWidget
label_desc: Use image node_id 9 for calling a global function with example usage: hash_string(text) and returns: sha_signature