code: def spark(spark_builder):
      print("set up new spark session")
      sess = spark_builder.getOrCreate()
      return sess.newSession()
  
file_path: glow/conftest.py
imports: import numpy
  from pyspark.sql import SparkSession
  import pytest
  import os
label_desc: Use image node_id 4 for calling a global function with example usage: spark(spark_builder) and returns: sess