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 816016031,MDU6SXNzdWU4MTYwMTYwMzE=,4955,set_index does not respect keep_attrs,31640292,closed,0,,,2,2021-02-25T02:22:05Z,2022-03-17T17:11:41Z,2022-03-17T17:11:41Z,CONTRIBUTOR,,,," **What happened**: set_index removes attributes from a coordinate, even with `xr.set_options(keep_attrs=True)` **What you expected to happen**: The attributes to be preserved through the coordinate renaming **Minimal Complete Verifiable Example**: ```python import xarray as xr xr.set_options(keep_attrs=True) x = xr.DataArray([1,2], dims=['x']) x.coords['x'] = (['x'],[2,3], {""name"":""coord_1""}) x.coords['a'] = (['x'],[0,1], {""name"":""coord 2""}) x.set_index(x='a').x.attrs # should be {""name"":""coord 2""}, is {} ``` **Environment**:
Output of xr.show_versions() INSTALLED VERSIONS ------------------ commit: None python: 3.8.5 | packaged by conda-forge | (default, Sep 24 2020, 16:55:52) [GCC 7.5.0] python-bits: 64 OS: Linux OS-release: 3.10.0-1160.11.1.el7.x86_64 machine: x86_64 processor: x86_64 byteorder: little LC_ALL: None LANG: en.UTF-8 LOCALE: None.None libhdf5: 1.10.6 libnetcdf: 4.7.4 xarray: 0.16.2 pandas: 1.2.0 numpy: 1.19.1 scipy: 1.6.0 netCDF4: 1.5.5.1 pydap: None h5netcdf: 0.8.1 h5py: 3.1.0 Nio: None zarr: None cftime: 1.3.1 nc_time_axis: 1.2.0 PseudoNetCDF: None rasterio: None cfgrib: None iris: None bottleneck: 1.3.2 dask: 2021.01.0 distributed: 2021.01.0 matplotlib: 3.3.3 cartopy: 0.18.0 seaborn: 0.11.1 numbagg: None pint: 0.16.1 setuptools: 49.6.0.post20210108 pip: 20.2.3 conda: None pytest: None IPython: 7.18.1 sphinx: 3.4.3
","{""url"": ""https://api.github.com/repos/pydata/xarray/issues/4955/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,completed,13221727,issue 742656246,MDExOlB1bGxSZXF1ZXN0NTIwNzM4NDky,4582,Match all float types in formatitem,31640292,closed,0,,,5,2020-11-13T17:53:12Z,2020-11-15T23:07:35Z,2020-11-15T21:30:01Z,CONTRIBUTOR,,0,pydata/xarray/pulls/4582,"This is a simple change to format_item in core/formatting.py that allows other float type (e.g. numpy.float16, numpy.float32) to be formatted the same as any other float. - [x] Partially Addresses #4575 - [x] Passes `isort . && black . && mypy . && flake8` - [x] Tests added ","{""url"": ""https://api.github.com/repos/pydata/xarray/issues/4582/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,,13221727,pull