No module named 'dedalus.public'

[Adam Jermyn]

I've just set up Dedalus on a Redhat Linux machine. I followed the instructions here:

https://dedalus-project.readthedocs.io/en/latest/machines/janus/janus.html

with a few changes to make it work on my system. These were:

- Modified the intel library directory to match mine.

- Changed requirements.txt to install matplotlib 2.2.3 (because 3.0 doesn't support python 3.4.3).

- Changed -openmp to -qopenmp because recent Intel compilers don't support -openmp.

It all seems to work, and I'm able to import dedalus, but then when I try to run the Rayleigh Benard test case I get the following error:

Traceback (most recent call last):

  File "rayleigh_benard.py", line 16, in <module>

    import dedalus.public as de

ImportError: No module named 'dedalus.public'

My guess is that this is a problem with the version of Python (3.4.3) not supporting the package structure in Dedalus but before I go reinstalling Python I'd like to verify that...

Any suggestions would be most welcome!

Thanks,

Adam

[Ben Brown]

Adam,

     Are you sure that Dedalus is in your python path?

—Ben

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[Adam Jermyn]

I think so:

~ echo $PYTHONPATH

/home/adamjermyn/dedalus/build/dedalus:

~ python

Python 3.4.3 (default, Nov  3 2018, 13:34:06)

[GCC Intel(R) C++ gcc 5.4 mode] on linux

Type "help", "copyright", "credits" or "license" for more information.

>>> import dedalus

>>> dir(dedalus)

['__doc__', '__loader__', '__name__', '__package__', '__path__', '__spec__']

So I'm able to import dedalus, just not dedalus.public or any other submodules.

-Adam

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[Adam Jermyn]

This is resolved. The issue was that another directory called dedalus was present in my PYTHONPATH, so Python was attempting to import that.

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[Ben Brown]

Lovely.  Thank you for letting us know the resolution.

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