dolfin team mailing list archive

[Johan Hake <hake@xxxxxxxxx>]

On Monday 16 February 2009 13:00:53 Aron Wahlberg wrote:
> I have downloaded all modules from FEniCS this week and installed
> everything. When trying to run some of the python demo-scripts, I get
> an error message "ImportError: No module named cpp".
> Any ideas of what is wrong?
>
> Regards,
> Aron
>
>
> These are the version of the modules I have:
>
> cln-1.2.2
> dolfin-0.9.0
> FErari-0.0.2
> ffc-0.6.0
> FIAT-0.3.4
> ginac-1.4.4
> instant-0.9.5
> puffin-0.1.6
> syfi-0.5.1
> ufc-1.1
> viper-0.4.2
>
> Example of a run of a demo-script:
> > python fem/simple/python/demo.py
>
> /usr/local/lib/python2.6/site-packages/ffc/compiler/language/index.py:9:
> DeprecationWarning: the sets module is deprecated
>  from sets import Set
> Traceback (most recent call last):
>  File "fem/simple/python/demo.py", line 12, in <module>
>    from dolfin import *
>  File "/usr/local/lib/python2.6/site-packages/dolfin/__init__.py",
> line 16, in <module>
>    from assemble import *
>  File "/usr/local/lib/python2.6/site-packages/dolfin/assemble.py",
> line 25, in <module>
>    import cpp
> ImportError: No module named cpp

What platform are you on?

Have you added the install directory to your python path?

If you are on Linux,

what does:

  echo $PYTHONPATH

If this does not include 

  /usr/local/lib/python2.6/site-packages

_and_ your PyDOLFIN installation is actually installed in this directory,
you need to add it in your .bashrc.

Johan