PYCHARM Error-- java.io.IOException: Cannot run program “python3“: CreateProcess error=2, The system

Why does pyspark throws cannot run program "python3"?

当运行pyspark程序遇到如下问题时，
Caused by: java.io.IOException: Cannot run program "python3": CreateProcess error=2

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Run before SparkSession/SparkContext:

import os
import sys

os.environ['PYSPARK_PYTHON'] = sys.executable
os.environ['PYSPARK_DRIVER_PYTHON'] = sys.executable

然后 spark = SparkSession.builder.appName('有人application name ***').getOrCreate()

还有另外一种方法，可以一劳永逸解决（推荐使用）：

在系统变量中加入如下配置：

PYSPARK_PYTHON=python

PYSPARK_DRIVER_PYTHON=python

然后重启IDE，就可以了