dolfin: ImportError: cannot import name common

[ljofre2146@…]

Hello to all:

my problem is for import dolfin module in a habitual project. This package was installed from macport in osx yosemite

sudo port install dolfin

when I try use the dolfin module I got the next message

import dolfin as df

Traceback (most recent call last):
 File "/Users/leonardojofre/Documents/mpi4py course/ejemplos petsc/example00001.py", line7, in <module>
 import dolfin as df

 File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/dolfin/__init__.py", line 16, in <module>
 from . import cpp

 File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/dolfin/cpp/__init__.py", line 42, in <module>
 exec("from . import %s" % module_name)

 File "<string>", line 1, in <module>
 ImportError: cannot import name common

it is a installation problem or is a bug?

thanks to all

[ljofre2146@…]

Cc Me!

[gideonsimpson]

Has there been any update on this? I'm finding that I get that error too, and I'm using the most recently updated dolfin on one of my machines. I get the error:

>>> import dolfin
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/dolfin/__init__.py", line 16, in <module>
    from . import cpp
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/dolfin/cpp/__init__.py", line 42, in <module>
    exec("from . import %s" % module_name)
  File "<string>", line 1, in <module>
ImportError: cannot import name common

[seanfarley (Sean Farley)]

Sorry, this fell off my radar. I'll try to reproduce locally.

[seanfarley (Sean Farley)]

I can't reproduce this locally. Is this due to the structure of the python project you're using (mpi4py course)? Is that someone online where I can download and try?

[gideonsimpson]

Replying to sean@…:

I can't reproduce this locally. Is this due to the structure of the python project you're using (mpi4py course)? Is that someone online where I can download and try?

I'm not using mpi4py.

[seanfarley (Sean Farley)]

Ok, I guess I was confused by the "mpi4py course" in your path. What are the exact options you used to compile dolfin? And is the "ejemplos petsc" folder online somewhere?

[gideonsimpson]

I have dolfin @1.5.0_2+cgal+mpich+petsc+slepc+suitesparse installed. Not sure where I should look for ejemplos petsc.

[seanfarley (Sean Farley)]

The first line of your traceback is "/Users/leonardojofre/Documents/mpi4py course/ejemplos petsc/example00001.py" ... can you run (from your home directory) python -c 'import dolfin' and see if that works?

[gideonsimpson]

The original poster was doing something with mpi4py; I am not. When I do the suggested command, I get:

:~$ python -c 'import dolfin'
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/dolfin/__init__.py", line 16, in <module>
    from . import cpp
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/dolfin/cpp/__init__.py", line 42, in <module>
    exec("from . import %s" % module_name)
  File "<string>", line 1, in <module>
ImportError: cannot import name common

[gideonsimpson]

Cc Me!

[gideonsimpson]

After blowing away my entire macports instllation, and reinstalling everything, it now seems to work. I still have no idea where the problem began.

[seanfarley (Sean Farley)]

Replying to gideon.simpson@…:

After blowing away my entire macports instllation, and reinstalling everything, it now seems to work. I still have no idea where the problem began.

My best guess is that something installed some python package that conflicted with dolfin :-/ Glad it's working now :-)