Improve "variable not found" error message #8474
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mathause
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Nov 23, 2023
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dcherian
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* upstream/main: Raise an informative error message when object array has mixed types (pydata#4700) Start renaming `dims` to `dim` (pydata#8487) Reduce redundancy between namedarray and variable tests (pydata#8405) Fix Zarr region transpose (pydata#8484) Refine rolling_exp error messages (pydata#8485) Use numbagg for `ffill` by default (pydata#8389) Fix bug for categorical pandas index with categories with EA dtype (pydata#8481) Improve "variable not found" error message (pydata#8474) Add whatsnew for pydata#8475 (pydata#8478) Allow `rank` to run on dask arrays (pydata#8475) Fix mypy tests (pydata#8476) Use concise date format when plotting (pydata#8449) Fix `map_blocks` docs' formatting (pydata#8464) Consolidate `_get_alpha` func (pydata#8465)
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One very small step as part of #8264.
The existing error is just
KeyError: 'foo, which is annoyingly terse. Future improvements include searching for similar variable names, or even rewriting the user's calling code if there's a close variable name.This PR creates a new test file. I don't love the format here — it's difficult to snapshot an error message, so it requires copying & pasting things, which doesn't scale well, and the traceback contains environment-specific lines such that it wouldn't be feasible to paste tracebacks.
(here's what we do in PRQL, which is (immodestly) great)
An alternative is just to put these in the mix of all the other tests; am open to that (and not difficult to change later)