import coordinates: cannot import name sofa_time - #864

Are you installing from source or pip? Can you copy and paste the installation command you used? e.g.

pip install astropy

or

python setup.py install

What your current working directory? e.g. what is the output from pwd?

@richardgmcmahon - it looks like you may have tried to import astropy from the source directory, which won't work unless you installed with python setup.py build_ext --inplace. If you just use python setup.py install, then you have to make sure you are in a different directory before importing. Can you confirm whether the import works if you change directory?

I installed with python setup.py install

OK, yes, I had tried it while still in the source directory. When I changed directory, it worked OK.

Thanks for the responses.

I wonder thought if it might be worth putting something in astropy/__init__.py to prevent this. I mean, not to prevent imports altogether. But just to try importing an extension module and, if it fails, output a more useful error message.

@iguananaut - I agree, this would be a good idea.

I'll handle this then. I would consider it a bug.

The one failure in Travis seems to be the docs issue that I've been hearing reference to elsewhere, and shouldn't be a result of this PR. So I'll merge after a rebase.