code: def with_sql_context(application_name, conf=None):
      
      if conf is None:
          conf = default_configuration
      assert isinstance(conf, SparkConfiguration)
  
      sc = conf.spark_context(application_name)
      import pyspark.sql
      try:
          yield sc, pyspark.sql.SQLContext(sc)
      finally:
          sc.stop()
docs: Context manager for a spark context
  
      Returns
      -------
      sc : SparkContext
      sql_context: SQLContext
  
      Examples
      --------
      Used within a context manager
      >>> with with_sql_context("MyApplication") as (sc, sql_context):
      ...     import pyspark
      ...     # Do stuff
      ...     pass