[killerbat00]

> Looking at Javascript, tools like npm and Bower provide the easy, reliable and powerful package management capabilities which it feels like Python is missing. The key to their success? Both tools download a copy of the right versions of the right libraries, by default placing them in a special folder directly within your project's directory.

Isn't this exactly what virtualenv does anyway? Plus, with virtualenv you don't have to muck around in your $PYTHONPATH and you can still choose which Python version is installed for each virtualenv.

This article doesn't seem to explicitly mention any, but what are the compelling reasons to use pip over pyenv/virtualenv for project isolation? I guess using 1 tool to install dependencies and isolate your working environment is handy. I'm unsure if the overhead of virtualenv is so high that it offers a compelling reason to switch (at least for me).