• 版本号：3.0.1，官方链接：传送门
• Subpackages
  pyspark.sql module
  pyspark.streaming module
  pyspark.ml package
  pyspark.mllib package
  pyspark.resource module
• PySpark is the Python API for Spark,Public classes:
  SparkContext:Spark功能的主要入口点。
  RDD:A Resilient Distributed Dataset (RDD), the basic abstraction in Spark.
  Broadcast:A broadcast variable that gets reused across tasks.
  Accumulator:An “add-only” shared variable that tasks can only add values to.
  SparkConf:For configuring Spark.
  SparkFiles:Access files shipped with jobs.
  StorageLevel:Finer-grained cache persistence levels.
  TaskContext:Information about the current running task, available on the workers and experimental.
  RDDBarrier:Wraps an RDD under a barrier stage for barrier execution.
  BarrierTaskContext:A TaskContext that provides extra info and tooling for barrier execution.
  BarrierTaskInfo:Information about a barrier task.

Sparkconf