Configure environment variables for Spark

Thanks a lot .

WARN ProcfsMetricsGetter: Exception when trying to compute pagesize, as a result reporting of ProcessTree metrics is stopped

i got error as follows


Missing Python executable 'ipython', defaulting to 'C:\work\spark-2.4.0-bin-hadoop2.7\bin\..' for SPARK_HOME environment variable. Please install Python or specify the correct Python executable in PYSPARK_DRIVER_PYTHON or PYSPARK_PYTHON environment variable to detect SPARK_HOME safely.
'ipython' is not recognized as an internal or external command,
operable program or batch file.




please help me to get out of it