code: def file_hash(path_obj):
      h = hashlib.sha256()
      with path_obj.open(mode="rb", buffering=0) as f:
          for b in iter(lambda: f.read(128 * 1024), b""):
              h.update(b)
      return str(h.hexdigest())
  
file_path: finetune/finetune/datasets/__init__.py
imports: import hashlib
  from io import StringIO
  import os.path
  from pathlib import Path
  import requests
  import pandas
label_desc: Use image node_id 1 for calling a global function with example usage: file_hash(path_obj) and returns: str