html_url,issue_url,id,node_id,user,created_at,updated_at,author_association,body,reactions,performed_via_github_app,issue
https://github.com/pydata/xarray/pull/7182#issuecomment-1282857157,https://api.github.com/repos/pydata/xarray/issues/7182,1282857157,IC_kwDOAMm_X85MdtjF,14808389,2022-10-18T18:46:05Z,2022-10-18T21:15:42Z,MEMBER,"I wonder if it is possible to create a generic `MultiIndex`? Something like
```python
ds.set_xindex(
    [""a"", ""b""],
    MultiIndex([(""a"", PandasIndex), (""b"", PandasIndex), ([""a"", ""b""], BallTreeIndex)),
)
```
(but I'm sure we can find a better syntax... maybe create a hashable sequence that is not a tuple, since that is already taken? and change the list of tuples to a dict).

For that concept to work, the return value of `MultiIndex` would have to be a factory function / class, which would instantiate the actual index.

What do you think?","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1412901282