dolfin ImportError: No module named _common

[sarah_frank@…]

After installing dolfin through macports, I am unable to use it successfully. I get an error after importing:

>>> 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>
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/dolfin/cpp/common.py", line 25, in <module>
    _common = swig_import_helper()
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/dolfin/cpp/common.py", line 24, in swig_import_helper
    return importlib.import_module('_common')
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/importlib/__init__.py", line 37, in import_module
    __import__(name)
ImportError: No module named _common

It appeared that someone else had similar problems but it looked like they uninstalled and reinstalled macports to fix, but after trying a few different things and then uninstalling and reinstalling macports I am still getting the same error message.

[seanfarley (Sean Farley)]

I'm about to push an updated version of dolfin so hopefully that will fix this.

[seanfarley (Sean Farley)]

Updated in r150520. Can you try to update and test?

[sarah_frank@…]

I updated and I am no longer getting the ImportError. Thanks for your help!

Replying to sean@…:

Updated in r150520. Can you try to update and test?

[seanfarley (Sean Farley)]

Yay!

[sarah_frank@…]

Hello! I just updated my macports because I was having trouble installing py27-slepc4py but in the process there was a problem with rebuilding dolfin. I uninstalled dolfin, ran port upgrade outdated, and now when I try to reinstall dolfin I get the following error:

Error: org.macports.build for port dolfin returned: command execution failed

I don't really understand the log file but I thought this part may be helpful:

:info:build make: *** [all] Error 2
:info:build make: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_math_dolfin/dolfin/work/dolfin-2016.1.0/build'
:info:build Command failed:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_math_dolfin/dolfin/work/dolfin-2016.1.0/build" && /usr/bin/make -j4 -w all VERBOSE=ON 
:info:build Exit code: 2
:error:build org.macports.build for port dolfin returned: command execution failed
:debug:build Error code: CHILDSTATUS 19770 2
:debug:build Backtrace: command execution failed
    while executing
"system -nice 0 $fullcmdstring"
    ("eval" body line 1)
    invoked from within
"eval system $notty $nice \$fullcmdstring"
    invoked from within
"command_exec build"
    (procedure "portbuild::build_main" line 8)
    invoked from within
"portbuild::build_main org.macports.build"
    ("eval" body line 1)
    invoked from within
"eval $procedure $targetname"

[mf2k (Frank Schima)]

That is an entirely different issue and so you should open a new ticket. Also, without the complete main.log, I don't think sean will be able to help you.