code: def host_hash():
      hostname = socket.gethostname()
      ns = _namespaces()
      return "%s-%s" % (
          hostname,
          hashlib.md5(ns.encode("ascii")).hexdigest(),
      )
  
imports: import hashlib
  import os
  import socket
label_desc: Use image node_id 2 for calling a global function with example usage: host_hash() and returns: unknown