title: How to properly upgrade numpy on Windows 7?
body: <p>It seems the whole world is using Linux or Mac, and I couldn't find any answer on the web to question "How to properly upgrade numpy on <strong>Windows 7</strong>?". I use Windows 7, python 2.7 and numpy 1.7.1, how do I upgrade to numpy 1.9.1 on my machine?</p>