ImportError during selfcheck

Trying to install metview-python in a fresh anaconda environment (Python 3.8) on my Ubuntu 20.04.

1. Install Metview

conda install metview -c conda-forge

This succesfully installs Metview version 5.13.1 (51301, 64-bit). Calling metview open the GUI of metview.

2. Install Metview-python

conda install metview-python -c conda-forge

Runs without error and installs version 1.8.1. However when running the selfcheck

python -m metview selfcheck

it throws

Traceback (most recent call last):
  File "/home/nrieger/anaconda3/envs/ecmwf/lib/python3.8/runpy.py", line 185, in _run_module_as_main
    mod_name, mod_spec, code = _get_module_details(mod_name, _Error)
  File "/home/nrieger/anaconda3/envs/ecmwf/lib/python3.8/runpy.py", line 144, in _get_module_details
    return _get_module_details(pkg_main_name, error)
  File "/home/nrieger/anaconda3/envs/ecmwf/lib/python3.8/runpy.py", line 111, in _get_module_details
    __import__(pkg_name)
  File "/home/nrieger/anaconda3/envs/ecmwf/lib/python3.8/site-packages/metview/__init__.py", line 35, in <module>
    from . import style
  File "/home/nrieger/anaconda3/envs/ecmwf/lib/python3.8/site-packages/metview/style.py", line 20, in <module>
    from metview.param import ParamInfo
  File "/home/nrieger/anaconda3/envs/ecmwf/lib/python3.8/site-packages/metview/param.py", line 12, in <module>
    from metview import dataset
  File "/home/nrieger/anaconda3/envs/ecmwf/lib/python3.8/site-packages/metview/dataset.py", line 24, in <module>
    from metview.track import Track
  File "/home/nrieger/anaconda3/envs/ecmwf/lib/python3.8/site-packages/metview/track.py", line 17, in <module>
    from metview.style import Style
ImportError: cannot import name 'Style' from partially initialized module 'metview.style' (most likely due to a circular import) (/home/nrieger/anaconda3/envs/ecmwf/lib/python3.8/site-packages/metview/style.py)

Interestingly, when starting Python within a terminal,

import metview as mv
mv.lowercase('Hello World!')

works without problems.

When running a simple test script to download data from ECMWF’s Mars catalogue, no data is downloaded but no error is thrown neither. It just simply runs forever although test data which is to be download is very tiny.

[iainrussell]

Hi @nicrie , this is strange - for me, the same environment successfully runs your script and gets the file! My current suspicion is that there’s something wrong in your .ecmwfapirc file, maybe a stray character. I think that’s what your error message is telling you, an invisible 0x23 character in your file, although it is printing ‘#’ as the value of it, so perhaps you have a comment in your file, but the JSON format does not permit such things so that would be the error.

[iainrussell]

Hi, it might be ok, it’s just the dying cries of Metview being shut down at the end of the process, but the messages are a bit scary if you’re not used to them! It looks like it worked, I think your file should be there now.