title: how to set python path for ipython notebook
body: <p>I have somehow messed up the anaconda installation. So now I am working with default python at <code>/usr/bin/python</code>. All imports etc working fine here. But my ipython (that came with anaconda) still uses <code>~/anaconda2/bin/python</code> and as such I can't import a few modules that I installed for <code>usr/bin/python</code>. How can I set the default python path for ipython? I have tried using <code>alias</code> command but that doesn't seem to work. <code>pip install ipython</code> says <code>Requirement already satisfied</code></p>