Install Python with cmd or powershell

You could download the setup you want to install and then install it automatically without using the setup's UI:

[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12Invoke-WebRequest -Uri "https://www.python.org/ftp/python/3.7.0/python-3.7.0.exe" -OutFile "c:/temp/python-3.7.0.exe"c:/temp/python-3.7.0.exe /quiet InstallAllUsers=0 PrependPath=1 Include_test=0

I don't think it will work without admin privileges though, I tried using InstallAllUsers=0 to install it only for the current user but it is still asking for elevation.

There are some options you can use when installing it this way, here is the doc: https://docs.python.org/3.6/using/windows.html#installing-without-ui

The best way to install Python through Windows Command Prompt will be through Chocolatey (Windows Package Manageer).

Steps to install python 3 will be as follows :-

1. Open CMD using 'Run as Administrator'.

2. Download and Install Chocolatey using the following command.

@"%SystemRoot%\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -InputFormat None -ExecutionPolicy Bypass -Command "iex ((New-Object System.Net.WebClient).DownloadString('https://chocolatey.org/install.ps1'))" && SET "PATH=%PATH%;%ALLUSERSPROFILE%\chocolatey\bin"

3. Download and install python using the following command.

choco install -y python3

4. You can check the version to verify if Python was successfully installed as follows.

python --version

You can not install it without administrator privileges. It would be lack of security I guess. What you can use in pipelines for instance is:

$url = "https://www.python.org/ftp/python/3.7.6/python-3.7.6-amd64.exe"$output = "C:/tmp/python-3.7.6-amd64.exe"if (Test-Path $output) {    Write-Host "Script exists - skipping installation"    return;}New-Item -ItemType Directory -Force -Path C:/tmp[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12Invoke-WebRequest -Uri $url -OutFile $output& $output /passive InstallAllUsers=1 PrependPath=1 Include_test=0 

But still, Admin rights are required