Feature Request: available_readers to return alphabetical order

[raybellwaves]

Firstly, this is awesome https://satpy.readthedocs.io/en/stable/readers.html#available-readers

It would be good to return the readers in alphabetical order to make it easier to read.

You could also suppress the that reader config is not found as a first time user this creates a lot of clutter.

>>> from satpy import available_readers
>>> available_readers()
Could not import reader config from: ['/home/ray/local/bin/anaconda3/envs/dev/lib/python3.8/site-packages/satpy/etc/readers/seviri_l2_grib.yaml']
Could not import reader config from: ['/home/ray/local/bin/anaconda3/envs/dev/lib/python3.8/site-packages/satpy/etc/readers/grib.yaml']
Could not import reader config from: ['/home/ray/local/bin/anaconda3/envs/dev/lib/python3.8/site-packages/satpy/etc/readers/clavrx.yaml']
Could not import reader config from: ['/home/ray/local/bin/anaconda3/envs/dev/lib/python3.8/site-packages/satpy/etc/readers/msi_safe.yaml']
Could not import reader config from: ['/home/ray/local/bin/anaconda3/envs/dev/lib/python3.8/site-packages/satpy/etc/readers/iasi_l2_so2_bufr.yaml']
Could not import reader config from: ['/home/ray/local/bin/anaconda3/envs/dev/lib/python3.8/site-packages/satpy/etc/readers/viirs_edr_flood.yaml']
Could not import reader config from: ['/home/ray/local/bin/anaconda3/envs/dev/lib/python3.8/site-packages/satpy/etc/readers/avhrr_l1b_hrpt.yaml']
Could not import reader config from: ['/home/ray/local/bin/anaconda3/envs/dev/lib/python3.8/site-packages/satpy/etc/readers/seviri_l1b_icare.yaml']
Could not import reader config from: ['/home/ray/local/bin/anaconda3/envs/dev/lib/python3.8/site-packages/satpy/etc/readers/seviri_l2_bufr.yaml']
Could not import reader config from: ['/home/ray/local/bin/anaconda3/envs/dev/lib/python3.8/site-packages/satpy/etc/readers/hsaf_grib.yaml']
Could not import reader config from: ['/home/ray/local/bin/anaconda3/envs/dev/lib/python3.8/site-packages/satpy/etc/readers/li_l2.yaml']
Could not import reader config from: ['/home/ray/local/bin/anaconda3/envs/dev/lib/python3.8/site-packages/satpy/etc/readers/modis_l2.yaml']
Could not import reader config from: ['/home/ray/local/bin/anaconda3/envs/dev/lib/python3.8/site-packages/satpy/etc/readers/avhrr_l1b_gaclac.yaml']
Could not import reader config from: ['/home/ray/local/bin/anaconda3/envs/dev/lib/python3.8/site-packages/satpy/etc/readers/modis_l1b.yaml']
Could not import reader config from: ['/home/ray/local/bin/anaconda3/envs/dev/lib/python3.8/site-packages/satpy/etc/readers/caliop_l2_cloud.yaml']
['seviri_l1b_native', 'nucaps', 'fci_l2_nc', 'ahi_hrit', 'safe_sar_l2_ocn', 'fci_l1c_fdhsi', 'virr_l1b', 'scatsat1_l2b', 'tropomi_l2', 'olci_l2', 'ahi_hsd', 'hy2_scat_l2b_h5', 'goes-imager_hrit', 'amsr2_l2', 'viirs_l1b', 'generic_image', 'abi_l1b_scmi', 'slstr_l2', 'vii_l1b_nc', 'seviri_l1b_nc', 'agri_l1', 'electrol_hrit', 'nwcsaf-msg2013-hdf5', 'viirs_edr_active_fires', 'nwcsaf-pps_nc', 'acspo', 'mimicTPW2_comp', 'abi_l1b', 'nwcsaf-geo', 'slstr_l1b', 'omps_edr', 'geocat', 'mtsat2-imager_hrit', 'avhrr_l1b_aapp', 'mersi2_l1b', 'viirs_compact', 'glm_l2', 'smos_l2_wind', 'iasi_l2', 'cmsaf-claas2_l2_nc', 'olci_l1b', 'avhrr_l1b_eps', 'jami_hrit', 'vii_l2_nc', 'vaisala_gld360', 'abi_l2_nc', 'seviri_l1b_hrit', 'ami_l1b', 'maia', 'ghrsst_l3c_sst', 'gpm_imerg', 'amsr2_l1b', 'viirs_sdr', 'goes-imager_nc', 'sar-c_safe']

[raybellwaves]

In addition, I didn't know (as_dict=False) was an option until I looked at the code. Could add that into the docs above so users know they can also do as_dict=True to return more information.

[djhoese]

All sounds good to me. Not sure why I didn't do alphabetical in the first place. PRs for the docstring and the sorting are welcome. Thanks.

[alishahusain]

I am a first-time contributor and would like to work on this issue.

[djhoese]

@alishahusain Awesome! Welcome. You can find information on contributing to Satpy in the docs here. If you have any questions or need guidance for this particular issue, let us know. If you are doing this as part of hacktoberfest you might want to wait until October to create the pull request.

[alishahusain]

I created a pull request for requested changes here #1378

[mraspaud]

Fixed in #1378