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
1555829604,PR_kwDOAMm_X85IeHqq,7475,Update error message when saving multiindex,23738400,closed,0,,,0,2023-01-24T23:44:14Z,2023-02-25T11:57:59Z,2023-02-24T20:16:43Z,CONTRIBUTOR,,0,pydata/xarray/pulls/7475,"I have updated the error message that gets printed when trying to save
a multiindex following some discussion in an ArviZ repo with @dcherian.

- [x] Related to #1077 and https://github.com/arviz-devs/arviz/issues/2165
- [ ] Tests added: haven't but can do if necessary using `pytest.raises(..., match)`
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1198717318,PR_kwDOAMm_X8418Vqw,6464,Add xarray-einstats to ecosystem page,23738400,closed,0,,,1,2022-04-09T17:12:37Z,2022-04-09T19:40:39Z,2022-04-09T19:37:01Z,CONTRIBUTOR,,0,pydata/xarray/pulls/6464,"Adds a mention of [xarray-einstats](https://xarray-einstats.readthedocs.io/en/latest/) to the ecosystem page. Related to #3322.
","{""url"": ""https://api.github.com/repos/pydata/xarray/issues/6464/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,,13221727,pull
626215981,MDExOlB1bGxSZXF1ZXN0NDI0MjQ5MzI4,4103,keep attrs in reset_index,23738400,closed,0,,,7,2020-05-28T05:00:50Z,2020-06-05T19:42:54Z,2020-06-05T19:39:10Z,CONTRIBUTOR,,0,pydata/xarray/pulls/4103,"Modifies the code in `reset_index` to keep attributes when converting an indexing coordinate to non indexing coordinate. I have added tests for single index for both dataarray and dataset. Not sure if both are needed as they end up calling the same base function.

Regarding multiindex, I think it is not possible to keep the metadata as it is removed when creating the multiindex/stacking.

 - [x] Closes #4101 
 - [x] Tests added
 - [x] Passes `isort -rc . && black . && mypy . && flake8`
 - [x] Fully documented, including `whats-new.rst` for all changes and `api.rst` for new API
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