issue_comments: 559606279

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https://github.com/pydata/xarray/issues/3582#issuecomment-559606279 https://api.github.com/repos/pydata/xarray/issues/3582 559606279 MDEyOklzc3VlQ29tbWVudDU1OTYwNjI3OQ== 6213168 2019-11-28T21:32:23Z 2019-11-28T21:32:23Z MEMBER

I would not advise subclassing. In most cases it should work but it's thoroughly untested and I would be unsurprised if you were to find a use case that accidentally reverts your subclass to the base class.

I don't think I fully understand your problem with accessors. Is it because you would need a hook that is triggered by DataArray. __init__? Why can't you initialise whatever you need to upon first access? 

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