Thank you Johannes. Using your apt-get instructions fixed my problem. It seems that there was some sort of problem with the upgrade performed by the Synaptic package manager, and I could not tell that anything was wrong. Using apt-get caused all the post-install configurations to take place, and now everything works as it should. The lesson I take from this is not to rely on Synaptic.
On 03/12/2014 08:08 AM, Johannes Ring wrote: On Wed, Mar 12, 2014 at 1:49 AM, Mike Sussman <[email protected]><[email protected]>wrote: This is a follow-up to my recent post. In that post, I reported the error ImportError: No module named petsc4py.PETSc when attempting to run demo_poisson.py. Looking through a transcript of what I was doing, I realized that I had successfully run one of the tutorial scripts: d1_p2D.py earlier in the afternoon and it ran successfully. But then I upgraded my system using synaptic and I noticed that I am now running fenics 1:1.3.0.2. After that upgrade d1_p2D.py doesn't work. In fact, the single command "from dolfin import *" fails with the message: from dolfin import * Traceback (most recent call last): File "<stdin>", line 1, in <module> File "*/usr/lib/python2.7/dist-packages/dolfin/*__init__.py", line 16, in <module> import cpp File "*/usr/lib/python2.7/dist-packages/dolfin/cpp/*__init__.py", line 42, in <module> exec("import %s" % module_name) File "<string>", line 1, in <module> File "/usr/lib/python2.7/dist-packages/dolfin/cpp/la.py", line 30, in <module> _la = swig_import_helper() File "/usr/lib/python2.7/dist-packages/dolfin/cpp/la.py", line 26, in swig_import_helper _mod = imp.load_module('_la', fp, pathname, description) ImportError: No module named petsc4py.PETSc Is it possible that something is wrong with the upgrade? Yes. This works fine for me in a clean Ubuntu 13.04 machine. Make sure you upgrade all packages by running: sudo apt-get update sudo apt-get dist-upgrade Let us know if that doesn't resolve your problem. BTW, Ubuntu 13.04 is no longer supported by Ubuntu, so you should consider upgrading to 13.10. Johannes -- Mike Sussman
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