老师，
我是Mac Pycharm按照视频步骤配置的环境变量，会报这个错误：
“Exception: Python in worker has different version 2.7 than that in driver 3.6, PySpark cannot run with different minor versions.Please check environment variables PYSPARK_PYTHON and PYSPARK_DRIVER_PYTHON are correctly set.”

提示我python版本不对，我把PYSPARK_PYTHON路径从 {$spark_path}/python 换成我本地的3.6.5版本路径也没解决，最后是通过这样的方式在.py文件中手动定义了以后才成功运行的：

import os
os.environ[“SPARK_HOME”] = “/Users/spark-2.2.0-bin-2.6.0-cdh5.7.0"
os.environ[“PYSPARK_PYTHON”]=”/usr/local/bin/python3.6"

这是为什么啊？ Pycharm的锅嘛？