[SciPy-User] ubuntu's PYTHONPATH and installing scipy
Charles R Harris
Wed Dec 9 01:06:30 CST 2009
On Tue, Dec 8, 2009 at 6:31 PM, Darren Dale <firstname.lastname@example.org> wrote:
> On Tue, Dec 8, 2009 at 7:10 PM, John Schulman <email@example.com> wrote:
> > Hi,
> > There's an issue with ubuntu PYTHONPATH that causes problems for scipy
> > installation. I eventually found a workaround, but I want to point out
> > the problem.
> > PYTHONPATH is different when sudoing, so that packages installed by
> > aptitute appear first in the path.*
> > The svn version scipy imports numpy in the setup script. "python
> > setup.py build" works as it should, but then "sudo python setup.py
> > install" gives the error "ImportError: cannot import name get_info",
> > since it's trying to use numpy1.3 (which was a dependency for some
> > package I installed).
> > The workaround is simple:
> > sudo PYTHONPATH=/usr/local/lib/python2.6/dist-packages: python setup.py
> > *In ubuntu, packages that you install through the apt package manager
> > goes into /usr/lib/python2.6/dist-packages, but python setup.py
> > install puts stuff in /usr/local/lib/python2.6/dist-packages. There's
> > a line in /etc/profile (I didn't put it there--it must be Ubuntu):
> > export PYTHONPATH=/usr/local/lib/python2.6/dist-packages:$PYTHONPATH.
> > I guess this is a kludge to fix the problem.
> You can also use visudo to edit your sudo options, so that your
> PYTHONPATH is carried over.
Oh, that's too clever. I used locate to find all the numpy installations and
deleted those with the wrong date ;) There are actually *three* different
directories in which python stuff gets installed. I haven't a clue why.
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