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 589257707,MDExOlB1bGxSZXF1ZXN0Mzk0ODU2MzI0,3904,"Modify code in ""Grouped arithmetic""",9200184,closed,0,,,5,2020-03-27T16:37:10Z,2020-04-05T19:52:27Z,2020-04-05T19:52:27Z,CONTRIBUTOR,,0,pydata/xarray/pulls/3904,"`results.append(group - alt.sel(x=label))` must be changed to: `results.append(group - alt.sel(letters=label))` ","{""url"": ""https://api.github.com/repos/pydata/xarray/issues/3904/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,,13221727,pull