KeyError : 'run2d'
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Description
I am trying to download Spectral files using sdss.get_spectra but continuously getting this error.

KeyError Traceback (most recent call last)
K:\Anaconda\lib\site-packages\astropy\table\row.py in __getitem__(self, item)
50 # and allows a list of tuple or str, which is not the right thing here.
---> 51 out = OrderedDict.__getitem__(self._table.columns, item)[self._index]
52 except (KeyError, TypeError):
KeyError: 'run2d'
During handling of the above exception, another exception occurred:
KeyError Traceback (most recent call last)
~\AppData\Local\Temp\ipykernel_15996\155021905.py in
34 co = coords.SkyCoord(ra, dec, unit=(u.deg, u.deg))
35 try:
---> 36 spectrum = SDSS.get_spectra_async(co, plate=plate, fiberID=fiber, data_release=16)
37 except ConnectionError as e:
38 print(f"Connection error: {e}")
K:\Anaconda\lib\site-packages\astroquery\sdss\core.py in get_spectra_async(self, coordinates, radius, matches, plate, fiberID, mjd, timeout, get_query_payload, data_release, cache, show_progress)
589 # - instruments
590 # - run2d sometimes (#739)
--> 591 if isinstance(row['run2d'], bytes):
592 run2d = row['run2d'].decode()
593 elif isinstance(row['run2d'], (np.integer, int)):
K:\Anaconda\lib\site-packages\astropy\table\row.py in __getitem__(self, item)
56 else:
57 # This is only to raise an exception
---> 58 out = self._table.columns[item][self._index]
59 return out
60
K:\Anaconda\lib\site-packages\astropy\table\table.py in __getitem__(self, item)
244 """
245 if isinstance(item, str):
--> 246 return OrderedDict.__getitem__(self, item)
247 elif isinstance(item, (int, np.integer)):
248 return list(self.values())[item]
KeyError: 'run2d'
Contributor guide
Research direction
Start at astroquery/sdss/core.py in get_spectra_async, where the traceback accesses row['run2d']; inspect the query response columns for the supplied plate, fiberID, and data_release=16. Reproduce the request with the reported inputs and verify that a response without run2d no longer raises KeyError while spectrum retrieval remains correct.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- data
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 30/100