[See bottom notes about why **Python 2**, not 3].   2. Open PowerShell and type _python_   3. If you get an error define the environment variable to know about python <pre class="lang:ps decode:true ">[ENVIRONMENT]::SETENVIRONMENTVARIABLE("PATH", "\$ENV:PATH;C:\PYTHON27", "USER")</pre>

Close PowerShell and open it again and try _python_ again.

If done right, you should see something like this: