code: def spark_context(self, application_name):
          
  
          # initialize the spark configuration
          self._init_spark()
          import pyspark
          import pyspark.sql
  
          # initialize conf
          spark_conf = pyspark.SparkConf()
          for k, v in self._spark_conf_helper._conf_dict.items():
              spark_conf.set(k, v)
  
          log.info("Starting SparkContext")
          return pyspark.SparkContext(appName=application_name, conf=spark_conf)
docs: Create a spark context given the parameters configured in this class.
  
          The caller is responsible for calling ``.close`` on the resulting spark context
  
          Parameters
          ----------
          application_name : string
  
          Returns
          -------
          sc : SparkContext