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Refactor parse_cf to not modify coordinates inplace #1285

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merged 2 commits into from Jan 12, 2020
Merged

Refactor parse_cf to not modify coordinates inplace #1285

merged 2 commits into from Jan 12, 2020

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jthielen
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Description Of Changes

Refactors parse_cf to not modify coordinates (which may be tied to immutable indexes) inplace, and instead reassign the coordinates in the recommended way. If this goes as my tests locally lead me to believe, this should fix the issues created with xarray in pydata/xarray#3519.

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@dopplershift dopplershift added Area: Xarray Pertains to xarray integration Type: Maintenance Updates and clean ups (but not wrong) labels Jan 10, 2020
@dopplershift dopplershift added this to the 1.0 milestone Jan 10, 2020
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dopplershift previously approved these changes Jan 12, 2020
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I like the implementation approach taken here. Very clean to assemble the new coords and assign once.

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I'll rebase and merge.

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Oh, no this was already up to date. The test failure was real, failing with our oldest supported xarray. It looks like assign_coords() only recent accepted passing a dict-like, and before only accepted **kwargs. Looks like an easy tweak that should work across versions. I've pushed a commit to fix. Hopefully this passes.

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Ignoring Codacy and merging.

@dopplershift dopplershift merged commit ce72871 into Unidata:master Jan 12, 2020
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Area: Xarray Pertains to xarray integration Type: Maintenance Updates and clean ups (but not wrong)
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@jthielen @dopplershift