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/issues/1989#issuecomment-373221066,https://api.github.com/repos/pydata/xarray/issues/1989,373221066,MDEyOklzc3VlQ29tbWVudDM3MzIyMTA2Ng==,1217238,2018-03-15T00:36:02Z,2018-03-15T00:36:02Z,MEMBER,"> Strangely, it says: AttributeError: module 'xarray' has no attribute 'show_versions' Perhaps I am on a very old version? Yes, you're using a version of xarray prior to 0.10. What value are you using for `rows`/`cols` in your example? Note that due to a quirk of NumPy, `np.sum(a)` actually corresponds to `a.sum()`. For xarray, `a.sum()` skips NaNs by default, so it's equivalent to `np.nansum()` or `bottleneck.nansum()` (if bottleneck is installed).","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,305373563