This one is driving me crazy. I have searched the internet for clues but non of the many threads of the type "ImportError: No module named xxxxxx" has proven very useful.
I had previously Python2.7 installed.
Then I installed Anaconda python, added $HOME/anaconda/bin to the PATH and launched ipython notebook
Python 2.7.9 |Anaconda 2.2.0 (x86_64)| (default, Dec 15 2014, 10:37:34)
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IPython 3.1.0 -- An enhanced Interactive Python.
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