id,node_id,number,title,user,state,locked,assignee,milestone,comments,created_at,updated_at,closed_at,author_association,active_lock_reason,draft,pull_request,body,reactions,performed_via_github_app,state_reason,repo,type
922926807,MDExOlB1bGxSZXF1ZXN0NjcxNzQ0NjMw,5477,Fix issue tuple as dimension,37740986,open,0,,,8,2021-06-16T18:01:47Z,2022-11-22T14:22:33Z,,CONTRIBUTOR,,0,pydata/xarray/pulls/5477,"I edited dataset in core to try to solve the [issue 4821](https://github.com/pydata/xarray/issues/4821). Some tests are still currently missing, also I believe there is still one more issue related to using tuple as dim. 

The code `xr.Dataset({""a"": ([(""a"", ""b"")], [1])})` does not error yet.

- [ ] Closes [#4821](https://github.com/pydata/xarray/issues/4821)
- [ ] Tests added
- [x] Passes `pre-commit run --all-files`
- [ ] User visible changes (including notable bug fixes) are documented in `whats-new.rst`
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