Getting error Python is not properly initialized on script task

Information 1/11/2023 6:19:50 PM Preparing to execute: pythontest
Information 1/11/2023 6:19:50 PM Started
Information 1/11/2023 6:19:50 PM Executing:pythontest
Information 1/11/2023 6:19:50 PM Executing Script:Is Graphical Format
Information 1/11/2023 6:19:50 PM import etltools, os
from PIL import Image

cf = etltools.GetVariable('<FileName>')
ext = os.path.splitext(cf)[-1]

etltools.SetVariable('<ExtValue>',ext)

flag = 1
if ext in ('.jpg','.png','.gif','.tif','.tiff','.bmp','.jpeg'):
flag = 0
etltools.WriteToLog('graphical formats')
else:
etltools.WriteToLog('graphical formats')





Result.Value = flag
Information 1/11/2023 6:19:50 PM Executing:Is Graphical Format
Error 1/11/2023 6:19:52 PM Following Error happened: Python is not properly initialized
Error 1/11/2023 6:19:52 PM Failed

have you installed it for all users?
www.etl-tools.com/wiki/knowledgebase/tips/working-with-python/
Which version of python have you got?