code: def split_random_key(key, delimiter=":"):
      """Split a random key by delimiter into prefix and random part
  
      Parameters
      ----------
      key : str
          The generated random key
  
      Returns
      -------
      prefix : str
          The string prefix
  
      random_part : str
          The generated random
      """
      return key.rsplit(delimiter, 1)
  
file_path: tvm/python/tvm/rpc/base.py
imports: import socket
  import time
  import json
  import errno
  import struct
  import random
  import logging
  from .._ffi.base import py_str
label_desc: Use image node_id 6 for calling a global function with example usage: split_random_key(key, delimiter) and returns: key