Python & Environment Variable Checker

Here’s a script! To run it on Windows:

If you get a security warning, open PowerShell and run:

   Set-ExecutionPolicy -Scope CurrentUser RemoteSigned

Then try again.

The script will:

🐍 Highlight any Python-related env vars

# ============================================
# Python & Environment Variable Checker
# Run this in PowerShell as Administrator
# ============================================

Write-Host "`n========================================" -ForegroundColor Cyan
Write-Host "  PYTHON VERSION CHECK" -ForegroundColor Cyan
Write-Host "========================================" -ForegroundColor Cyan

# Check all Python versions available
$pythonLocations = @()

try {
    $pyVersions = py --list 2>&1
    Write-Host "`nInstalled Python versions (via py launcher):" -ForegroundColor Yellow
    Write-Host $pyVersions
} catch {
    Write-Host "Python launcher (py) not found." -ForegroundColor Red
}

# Check if Python 3.13 specifically is available
Write-Host "`n--- Python 3.13 Specific Check ---" -ForegroundColor Yellow
try {
    $py313 = py -3.13 --version 2>&1
    if ($py313 -match "3.13") {
        Write-Host "✅ Python 3.13 IS installed: $py313" -ForegroundColor Green
    } else {
        Write-Host "❌ Python 3.13 is NOT installed." -ForegroundColor Red
    }
} catch {
    Write-Host "❌ Python 3.13 is NOT installed." -ForegroundColor Red
}

# Check default python
Write-Host "`n--- Default Python ---" -ForegroundColor Yellow
try {
    $defaultPy = python --version 2>&1
    $defaultPath = (Get-Command python -ErrorAction SilentlyContinue).Source
    Write-Host "Default: $defaultPy" -ForegroundColor White
    Write-Host "Path:    $defaultPath" -ForegroundColor White
} catch {
    Write-Host "No default python found in PATH." -ForegroundColor Red
}

# Find all python.exe on the system
Write-Host "`n--- All Python Executables Found ---" -ForegroundColor Yellow
$searchPaths = @(
    "C:\Python*",
    "C:\Users\$env:USERNAME\AppData\Local\Programs\Python\*",
    "C:\Program Files\Python*",
    "C:\Program Files (x86)\Python*"
)
$found = $false
foreach ($path in $searchPaths) {
    $exes = Get-ChildItem -Path $path -Filter "python.exe" -ErrorAction SilentlyContinue
    foreach ($exe in $exes) {
        $ver = & $exe.FullName --version 2>&1
        Write-Host "  $ver  ->  $($exe.FullName)" -ForegroundColor White
        $found = $true
    }
}
if (-not $found) {
    Write-Host "  No python.exe found in common locations." -ForegroundColor DarkGray
}

Write-Host "`n========================================" -ForegroundColor Cyan
Write-Host "  ENVIRONMENT VARIABLES" -ForegroundColor Cyan
Write-Host "========================================" -ForegroundColor Cyan

# PATH variable (formatted nicely)
Write-Host "`n--- PATH entries ---" -ForegroundColor Yellow
$env:PATH -split ";" | Where-Object { $_ -ne "" } | ForEach-Object {
    Write-Host "  $_" -ForegroundColor White
}

# Python-related env vars
Write-Host "`n--- Python-related Variables ---" -ForegroundColor Yellow
$pyVars = Get-ChildItem Env: | Where-Object { $_.Name -match "PYTHON|PY" }
if ($pyVars) {
    $pyVars | ForEach-Object { Write-Host "  $($_.Name) = $($_.Value)" -ForegroundColor White }
} else {
    Write-Host "  No PYTHON* environment variables found." -ForegroundColor DarkGray
}

# All System + User env vars
Write-Host "`n--- All Environment Variables ---" -ForegroundColor Yellow
Get-ChildItem Env: | Sort-Object Name | ForEach-Object {
    Write-Host "  $($_.Name) = $($_.Value)" -ForegroundColor White
}

Write-Host "`n========================================" -ForegroundColor Cyan
Write-Host "  Done! Press any key to exit." -ForegroundColor Cyan
Write-Host "========================================`n" -ForegroundColor Cyan
Read-Host "Press Enter to close"

✅ Check if Python 3.13 is installed (and show all installed Python versions)

📍 Show the exact file path of each Python install

🗂️ List all environment variables including your full PATH