Python 3.10.11 PowerShell Auto-Installation

Py31011_PSAI.ps1

# PowerShell Script to Download and Install Python 3.10.11
# This script automates the process of downloading and installing Python 3.10.11.
# It includes error handling, version checking, admin privilege checking, installer validation, and post-installation cleanup.

# Check if Python 3.10.11 is already installed
$installedVersion = & python --version 2>&1
if ($installedVersion -match "Python 3.10.11") {
  Write-Host "Python 3.10.11 is already installed. Exiting..."
  exit
}

# Parse Command-Line Arguments
$installForAllUsers = $false
if ($args -contains '--all-users') {
  $installForAllUsers = $true
}

# Check for Admin Privileges if Necessary
if ($installForAllUsers) {
  $isAdmin = ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator")
  if (!$isAdmin) {
    Write-Host "Installing for all users requires administrative privileges. Please run the script as an administrator or remove the '--all-users' argument."
    exit
  }
}

# Setup variables
$pythonUrl = "https://www.python.org/ftp/python/3.10.11/python-3.10.11-amd64.exe"
$pythonHash = "a55e9c1e6421c84a4bd8b4be41492f51"
$pythonInstaller = "$($env:TEMP)\python.exe"

# Download Python installer
Write-Host "Downloading Python installer..."
try {
  Invoke-WebRequest -Uri $pythonUrl -OutFile $pythonInstaller
  $installerHash = Get-FileHash $pythonInstaller -Algorithm MD5 | ForEach-Object Hash
  if ($installerHash -ne $pythonHash) {
    Write-Host "Hash mismatch! Installer may have been tampered with. Exiting..."
    exit
  }
} catch {
  Write-Host "Failed to download Python installer. Please check your internet connection and try again."
  exit 1
}

# Install Python
Write-Host "Installing Python..."
try {
  $installAllUsersArg = if ($installForAllUsers) { "1" } else { "0" }
  Start-Process -FilePath $pythonInstaller -ArgumentList "/quiet InstallAllUsers=$installAllUsersArg PrependPath=1" -Wait
} catch {
  Write-Host "Python installation failed:" $_
  exit 1
}

# Post-installation cleanup
Write-Host "Cleaning up downloaded files..."
Remove-Item -Path $pythonInstaller -Force

Write-Host "Python installation complete!"

can i request to set a argument for download another py version? please

You can find the correct Python URL on their website. If there was a scope for this script, adding CLI args wouldn't be in it.

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I might've misunderstood what you meant. You can directly change which version of Python the program checks for by editing the $installedVersion, $pythonUrl, and $pythonHash variables. Make sure you confirm the MD5 hash manually, yourself, before editing it into the script. You should be able to find the hash on whatever page you download Python from.