Updated mset9.bat to Install Python

MSET9_installer_script/mset9.bat

@@ -1,12 +1,86 @@
-@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 
+)
+  del p.exe temp.txt 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 "(New-Object Net.WebClient).DownloadFile('https://www.python.org/ftp/python/3.12.2/python-3.12.2-amd64.exe', 'p.exe')"
+
+:doneDownloading
+  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 temp.txt
+  echo  Done
+  echo Python installed successfully. Please rerun this script to open MSET9.
+  pause 
+  exit