Repository navigation
Improve error message when trying to create an empty table from an empty list #8579
Description
Trying to create an empty table from an empty list leads to a cryptic error message
from astropy.table import Table
Table([])
. . .
ValueError: Inconsistent data column lengths: set()
while Table([[]]) works.
The most straightforward solution would probably add a check to the start of the
astropy/astropy/table/table.py
Line 770 in d871698
but looking at the source code it seems that at least one of
data, names, dtype or rows must be a non-empty list/dict so it might be more useful to check this at the very start of the __init__?
Activity
samaloney commentedon Apr 16, 2019
Slightly related to #4567 and #3811
geekypathak21 commentedon May 2, 2019
To solve this we only need to change the error message or adding a feature so that
Table([])is accepted.bsipocz commentedon May 2, 2019
#8647 will fix this.