text: #
  # Licensed to the Apache Software Foundation (ASF) under one or more
  # contributor license agreements.  See the NOTICE file distributed with
  # this work for additional information regarding copyright ownership.
  # The ASF licenses this file to You under the Apache License, Version 2.0
  # (the "License"); you may not use this file except in compliance with
  # the License.  You may obtain a copy of the License at
  #
  #    http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  #
  
  """
  An interactive shell.
  
  This file is designed to be launched as a PYTHONSTARTUP script.
  """
  
  import atexit
  import os
  import platform
  
  import py4j
  
  import pyspark
  from pyspark.context import SparkContext
  from pyspark.sql import SQLContext, HiveContext
  from pyspark.storagelevel import StorageLevel
  
  # this is the deprecated equivalent of ADD_JARS
  add_files = None
  if os.environ.get("ADD_FILES") is not None:
      add_files = os.environ.get("ADD_FILES").split(',')
  
  if os.environ.get("SPARK_EXECUTOR_URI"):
      SparkContext.setSystemProperty("spark.executor.uri", os.environ["SPARK_EXECUTOR_URI"])
  
  sc = SparkContext(pyFiles=add_files)
  atexit.register(lambda: sc.stop())
  
  try:
      # Try to access HiveConf, it will raise exception if Hive is not added
      sc._jvm.org.apache.hadoop.hive.conf.HiveConf()
      sqlContext = HiveContext(sc)
  except py4j.protocol.Py4JError:
      sqlContext = SQLContext(sc)
  except TypeError:
      sqlContext = SQLContext(sc)
  
  # for compatibility
  sqlCtx = sqlContext
  
  print("""Welcome to
        ____              __
       / __/__  ___ _____/ /__
      _\ \/ _ \/ _ `/ __/  '_/
     /__ / .__/\_,_/_/ /_/\_\   version %s
        /_/
  """ % sc.version)
  print("Using Python version %s (%s, %s)" % (
      platform.python_version(),
      platform.python_build()[0],
      platform.python_build()[1]))
  print("SparkContext available as sc, %s available as sqlContext." % sqlContext.__class__.__name__)
  
  if add_files is not None:
      print("Warning: ADD_FILES environment variable is deprecated, use --py-files argument instead")
      print("Adding files: [%s]" % ", ".join(add_files))
  
  # The ./bin/pyspark script stores the old PYTHONSTARTUP value in OLD_PYTHONSTARTUP,
  # which allows us to execute the user's PYTHONSTARTUP file:
  _pythonstartup = os.environ.get('OLD_PYTHONSTARTUP')
  if _pythonstartup and os.path.isfile(_pythonstartup):
      execfile(_pythonstartup)
  