Updated mset9.bat to Install Python

MSET9_installer_script/mset9.bat

@@ -1,12 +1,47 @@
-@echo off
-chcp 65001 > nul
-py -V > nul
-if %errorlevel% NEQ 0 (
-    echo Python 3 is not installed.
-    echo Please install Python 3 and try again.
-    echo https://www.python.org/downloads/
-    echo.
-    pause
-    exit
-)
-py -3 mset9.py
+@echo off
+setlocal enabledelayedexpansion
+chcp 65001 > nul
+
+py -V > nul 2>&1
+if %errorlevel% EQU 0 py -3 mset9.py & exit /B
+python -V > nul 2>&1
+if %errorlevel% EQU 0 python mset9.py & exit /B else (
+  del p.exe 2> nul
+  echo Python not found. Do you want to install it? ^(yes or no^)
+  set /p pyPrompt="> "
+  set confirm=F
+
+  if [%PyPrompt%] EQU [y] set confirm=T
+  if [%PyPrompt%] EQU [yes] set confirm=T
+
+  if %confirm% EQU T ( 
+    cls
+    echo Downloading...
+
+    echo 6.1.7601> temp.txt & echo 6.2>> temp.txt & echo 6.3>> temp.txt & echo 10>> temp.txt
+    for /F "tokens=*" %%G in (temp.txt) do (
+      ver | findstr /i "%%G"> nul
+      if !errorlevel! EQU 0 if "%%G" EQU "6.1.7601 " (
+        powershell -Command "(New-Object Net.WebClient).DownloadFile('https://www.python.org/ftp/python/3.8.10/python-3.8.10.exe', 'p.exe')"
+        goto :doneDownloading
+      ) else if "%%G" EQU "6.2 " (goto :newWin) else if "%%G" EQU "6.3 " (goto :newWin) else if "%%G" EQU "10" goto :newWin)) else exit /B)
+
+if not exist p.exe (
+  cls
+  del temp.txt
+  echo Your Windows version is not supported. Please use a computer with at least Windows 7 + SP1 and rerun this script.
+  pause
+  exit /B)
+
+:newWin
+ powershell -Command "Invoke-WebRequest https://www.python.org/ftp/python/3.12.2/python-3.12.2-amd64.exe -OutFile p.exe"
+
+:doneDownloading
+ del temp.txt
+ if !errorlevel! NEQ 0 echo Error downloading Python. Rerun this file again or download and install Python manually. & pause & exit /B    
+ echo  Done & echo Installing...
+ p.exe /quiet AppendPath=1
+ if %errorlevel% NEQ 0 echo Error installing Python. Rerun this file again or install Python manually. & pause & exit /B
+ del p.exe & echo  Done
+ echo Python installed successfully. Please rerun this script to open MSET9.
+ pause & exit