code: def get_spark_application_driver_host(spark):
      return spark.conf.get("spark.driver.host")
  
imports: import subprocess
  import os
  import sys
  import random
  import threading
  import collections
  import logging
  import time
label_desc: Use image node_id 8 for calling a global function with example usage: get_spark_application_driver_host(spark) and returns: spark