code: def md5(text):
      if isinstance(text, str):
          text = text.encode("utf8")
      md5 = hashlib.md5()
      md5.update(text)
      return md5.hexdigest()
  
file_path: VisualDL/visualdl/utils/update_util.py
imports: import threading
  import hashlib
  import requests
  from visualdl import __version__
  from visualdl.proto.record_pb2 import DESCRIPTOR
label_desc: Use image node_id 1 for calling a global function with example usage: md5(text) and returns: md5