issue_comments: 1498119367

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https://github.com/pydata/xarray/issues/6836#issuecomment-1498119367 https://api.github.com/repos/pydata/xarray/issues/6836 1498119367 IC_kwDOAMm_X85ZS3zH 2448579 2023-04-05T20:35:20Z 2023-04-05T20:35:20Z MEMBER

I think we could special-case extracting a multiindex level here: https://github.com/pydata/xarray/blob/d4db16699f30ad1dc3e6861601247abf4ac96567/xarray/core/groupby.py#L469

group at that stage should have values ['a', 'a', 'b', 'b', 'c', 'c']

@mschrimpf Can you try that and send in a PR?

 
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