text: """
  Utils function.
  """
  import sys
  import os
  import logging
  
  from glob import glob
  
  
  def add_pyspark_path_if_needed():
      """Add PySpark to the library path based on the value of SPARK_HOME if
      pyspark is not already in our path"""
      try:
          from pyspark import context
      except ImportError:
          # We need to add PySpark, try findspark if we can but it has an
          # undeclared IPython dep.
          try:
              import findspark
              findspark.init()
          except ImportError:
              add_pyspark_path()
  
  
  def add_pyspark_path():
      """Add PySpark to the library path based on the value of SPARK_HOME."""
  
      try:
          spark_home = os.environ['SPARK_HOME']
  
          sys.path.append(os.path.join(spark_home, 'python'))
          py4j_src_zip = glob(os.path.join(spark_home, 'python',
                                           'lib', 'py4j-*-src.zip'))
          if len(py4j_src_zip) == 0:
              raise ValueError('py4j source archive not found in %s'
                               % os.path.join(spark_home, 'python', 'lib'))
          else:
              py4j_src_zip = sorted(py4j_src_zip)[::-1]
              sys.path.append(py4j_src_zip[0])
      except KeyError:
          print("""SPARK_HOME was not set. please set it. e.g.
          SPARK_HOME='/home/...' ./bin/pyspark [program]""")
          exit(-1)
      except ValueError as e:
          print(str(e))
          exit(-1)
  
  
  def quiet_py4j():
      logger = logging.getLogger('py4j')
      logger.setLevel(logging.INFO)
  