I've followed everything here (https://github.com/gregsexton/ob-ipython) in
order to set up ipython in org mode. But I keep getting the error:

...executing Ipython code block...
apply: Searching for program: no such file or directory, ipython

when I try the sample code block

#+BEGIN_SRC ipython :session myip
  %matplotlib inline
  import matplotlib.pyplot as plt
  import numpy as np
#+END_SRC

Other samples don't work either. I've gotten ipython from Enthought, which
should have all the necessities. Starting ipython from my (Ubuntu) terminal
brings up:

Python 2.7.11 | 64-bit | (default, Jun 11 2016, 10:32:30)
Type "copyright", "credits" or "license" for more information.
IPython 4.1.2 -- An enhanced Interactive Python.
...
as it is on my path. I even installed exec-path-from-shell to make sure
Emacs would see my path. Not sure how to proceed.

LB