How to install Flask on Windows?

I have a project to do for after create a webpage that display the latest weather from my CSV file.

I would like some details how to do it (don't really get the http://flask.pocoo.org/docs/installation/#installation installation setup)

Can anyone mind explain me how to do it simply?

Thanks.

I'm running on Windows 7, with the Windows Powershell.

Install pip as described here: How do I install pip on Windows?

Then do

pip install flask

That installation tutorial is a bit misleading, it refers to actually running it in a production environment.