issue_comments: 225330535

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https://github.com/pydata/xarray/pull/802#issuecomment-225330535 https://api.github.com/repos/pydata/xarray/issues/802 225330535 MDEyOklzc3VlQ29tbWVudDIyNTMzMDUzNQ== 1217238 2016-06-11T01:57:10Z 2016-06-11T01:57:10Z MEMBER

I did a little bit of testing. Here is one case I found where things don't work as I expected:

``` In [32]: idx = pd.MultiIndex.from_product([['a', 'b'], [0, 1, 2]], names=['lev0', 'lev1'])

In [33]: data = xr.DataArray(range(6), [('x', idx)])

In [34]: data.sel(x=('a',)) Out[34]: <xarray.DataArray (lev1: 3)> array([0, 1, 2]) Coordinates: * lev1 (lev1) int64 0 1 2

In [35]: data.sel(x='a') Out[35]: <xarray.DataArray (x: 3)> array([0, 1, 2]) Coordinates: * x (x) object ('a', 0) ('a', 1) ('a', 2) ```

I would expect an index drop in the last case, too. I guess we need to check for scalars.

 
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