[Installation] Failed to import spectral module

[juliandwain]

Hi,

Thanks for this amazing library!
I installed the module using the command given in the README pip install jax-cfd[complete] to have access to all submodules.

When I try to import the spectral module via import jax_cfd.spectral as spectral I get the following error message:

import jax_cfd.spectral as spectral
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'jax_cfd.spectral'

Some more information about my system and the environment:

• Python version: Python 3.9.7 (default, Sep 16 2021, 13:09:58)
• JAX version: 0.2.21
• JAX CFD version: 0.1.0
• OS: Linux 5.10.16.3-microsoft-standard-WSL2

Is there any way that I can resolve this issue?

Thanks in advance!

[gideonite]

Did you try this: pip install -U git+https://github.com/google/jax-cfd.git? I think that the spectral module is not in a released version (yet).

Hope this helps!

[juliandwain]

I haven't tried it yet but I will do so and let you know, thanks for the reply!

[juliandwain]

Hi @gideonite
I tried your command but still got the same error, that there is no module called jax_cfd.spectral.

[shoyer]

You might need to try creating a new Python environment, e.g., with Conda?

This works for me in Google Colab:

! pip install -U git+https://github.com/google/jax-cfd.git
import jax_cfd.spectral as spectral

[juliandwain]

Thanks @shoyer , this solved my problem!

[juliandwain]

@shoyer is there a reason why the spectral module is only included if I install the package via

pip install -U git+https://github.com/google/jax-cfd.git

For me, it does still not work if I install it like proposed in the README. (although the above solution does work!)

[gideonite]

Yikes sorry for this very very long delay. Did you wind up finding a solution? It may be because the package on PyPI is out of date. @juliandwain

[juliandwain]

Installing the package via

pip install -U git+https://github.com/google/jax-cfd.git

does work for me. I was just wondering if its possible to include in the PyPI release so that one does not have to install it via the git command.

[shoyer]

We're going to issue a new release shortly after fixing the issues for the channel flow demo