Neuron 7.2 Python error

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Neuron 7.2 Python error

Post by ssaluga »

I usually have no problem installing Neuron in our lab, but with 10.7.4, I am getting the following error:

NEURON -- Release 7.2 (562:42a47463b504) 42a47463b504
Duke, Yale, and the BlueBrain Project -- Copyright 1984-2008

Traceback (most recent call last):
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/", line 555, in <module>
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/", line 537, in main
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/", line 268, in addusersitepackages
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/", line 243, in getusersitepackages
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/", line 233, in getuserbase
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/", line 523, in get_config_var
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/", line 419, in get_config_vars
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/", line 298, in _init_posix
IOError: invalid Python installation: unable to open /usr/include/python2.7/pyconfig.h (No such file or directory)
nrngui exit status was 1
Press return key to exit

I do have the Enthought Python additions installed.
Any ideas on how to fix, I would prefer not to have to mess around with command line changes if necessary.
Thank you all in advance,

Scott J. Saluga
Oberlin College
Site Admin
Posts: 5822
Joined: Wed May 18, 2005 4:50 pm
Location: Yale University School of Medicine

Re: Neuron 7.2 Python error

Post by ted »

Suggest that you install the latest 7.3 alpha instead, specifically ... 10.7.4.dmg

You'll also need the latest version of the command line developer tools, in order to be able to compile mod files. Go to
and click on the "Download command line developer tools . . . " link. You'll have to sign in with your Apple ID and password.

If you are interested in using parallel hardware to handle large models or speed up your simulations, you will want to install OpenMPI. Download this file ... 1.6.tar.gz

Code: Select all

tar xzf openmpi-1.6.tar.gz
cd openmpi-1.6
make install
Posts: 54
Joined: Tue Apr 10, 2007 3:36 pm
Location: Duke University

Re: Neuron 7.2 Python error

Post by JimH »

In case anyone else runs into this problem:
I ran into this same error and I am pretty sure I got 7.2 running only by installing the developer tools.
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