Install Azure CLI 2.0 Nightly Build on Windows using Chocolatey and PowerShell

Add-AzureCliNightlyBuildWithPython.ps1

<#
    .SYNOPSIS
        Install Azure CLI 2.0 Nightly Build on Windows using Chocolatey and PowerShell
#>
if (-not (Get-Command -Name Choco -ErrorAction SilentlyContinue))
{
    Throw 'Chocolatey is not installed. Please install it. See https://chocolatey.org/install for instructions.'
}

Write-Host -Object 'Installing Python 3 with Chocolatey...'
& choco @('install','python3','-y')

Update-SessionEnvironment

$pyhtonScriptsPath = Join-Path -Path $ENV:APPDATA -ChildPath 'Python\Python36\Scripts'
$currentPath = [System.Environment]::GetEnvironmentVariable('Path',[System.EnvironmentVariableTarget]::User) -split ';'
if ($currentPath -notcontains $pyhtonScriptsPath)
{
    Write-Host -Object 'Adding Python Scripts to User Environment Path...'
    $newPath = @()
    $newPath += $currentPath
    $newPath += $pyhtonScriptsPath
    $newPathJoined = $newPath -join ';'
    [System.Environment]::SetEnvironmentVariable('Path',$newPathJoined,[System.EnvironmentVariableTarget]::User)
}

if (-not $currentPath.Contains($pyhtonScriptsPath))
{
    Write-Host -Object 'Adding Python Scripts to Current PowerShell session path...'
    $ENV:Path = "$($ENV:Path);$pyhtonScriptsPath"
}

Write-Host -Object 'Installing nightly build of Az CLI 2.0...'
& pip @('install','--no-cache-dir','--user','--upgrade','--pre','azure-cli','--extra-index-url','https://azureclinightly.blob.core.windows.net/packages')

Write-Host -Object 'Installation of nightly build of Az CLI 2.0 complete. Execute "az" to start.'