code: def get_sandbox_name():
      if "H2O_SANDBOX_NAME" in os.environ:
          a = os.environ["H2O_SANDBOX_NAME"]
          print("H2O_SANDBOX_NAME", a)
          return a
      else:
          return "sandbox"
  
imports: import sys, os, time, json, datetime, errno, stat, getpass, requests, pprint
  import h2o
label_desc: Use image node_id 13 for calling a global function with example usage: get_sandbox_name() and returns: a, str