It"s a pity that so many installation instructions for Python packages assume that pip is already installed : it's not installed by Python installers, and installation instructions for pip are only for Linux / OS X, not for Windows. So, potential Windows users of those packages are left scrambling for instructions. Furthermore, these instructions include complex procedures, and do not explain how to deal with multiple Python versions (2.x and 3.x).
Yet, python is often used on windows.
I've developed Pip for Windows to address these issues. It is a tiny Python Package manager that automatically installs pip on Windows. I suggest that package providers recommend it, as I have for pyDatalog. Its GUI also lets you: