Make sure Python 2 is before Python 3 in the Windows PATH

python_path_fix.ps1

$oldPath = (Get-ItemProperty -Path `
    'Registry::HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Session Manager\Environment' `
    -Name PATH).path
$pathParts = $oldPath.split(";")
$python = @()
$other = @()
foreach ($part in $pathParts) {
    if ($part -like "*Python*") {
        $python += ,$part
    }
    else
    {
        $other += ,$part
    }
}

$python = $python | sort
$all =  $python + $other
$newPath = $all -join ";"

Set-ItemProperty -Path `
    'Registry::HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Session Manager\Environment' `
    -Name PATH `
    -Value $newPath