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DOC: Clarify error message in open_dataarray #9637

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Oct 16, 2024
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@DWesl DWesl commented Oct 16, 2024

If the file is empty (or contains no variables matching any filtering done by the backend), use a different error message indicating that, rather than suggesting that the file has too many variables for this function.

I feel like the new message could be longer, but there's not really a way to fix "no data" in python, unless the writing process decided to add everything to the global coordinates attribute or something.

  • User visible changes (including notable bug fixes) are documented in whats-new.rst

If the file is empty (or contains no variables matching any filtering done by the backend), use a different error message indicating that, rather than suggesting that the file has too many variables for this function.
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Good catch, thanks!

@shoyer shoyer enabled auto-merge (squash) October 16, 2024 21:46
@shoyer shoyer merged commit 3c01ced into pydata:main Oct 16, 2024
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dcherian added a commit to TomAugspurger/xarray that referenced this pull request Oct 21, 2024
* main:
  Fix multiple grouping with missing groups (pydata#9650)
  flox: Properly propagate multiindex (pydata#9649)
  Update Datatree html repr to indicate inheritance (pydata#9633)
  Re-implement map_over_datasets using group_subtrees (pydata#9636)
  fix zarr intersphinx (pydata#9652)
  Replace black and blackdoc with ruff-format (pydata#9506)
  Fix error and missing code cell in io.rst (pydata#9641)
  Support alternative names for the root node in DataTree.from_dict (pydata#9638)
  Updates to DataTree.equals and DataTree.identical (pydata#9627)
  DOC: Clarify error message in open_dataarray (pydata#9637)
  Add zip_subtrees for paired iteration over DataTrees (pydata#9623)
  Type check datatree tests (pydata#9632)
  Add missing `memo` argument to DataTree.__deepcopy__ (pydata#9631)
  Bug fixes for DataTree indexing and aggregation (pydata#9626)
  Add inherit=False option to DataTree.copy() (pydata#9628)
  docs(groupby): mention deprecation of `squeeze` kwarg (pydata#9625)
  Migration guide for users of old datatree repo (pydata#9598)
  Reimplement Datatree typed ops (pydata#9619)
dcherian added a commit to dcherian/xarray that referenced this pull request Oct 22, 2024
* main: (63 commits)
  Add close() method to DataTree and use it to clean-up open files in tests (pydata#9651)
  Change URL for pydap test (pydata#9655)
  Fix multiple grouping with missing groups (pydata#9650)
  flox: Properly propagate multiindex (pydata#9649)
  Update Datatree html repr to indicate inheritance (pydata#9633)
  Re-implement map_over_datasets using group_subtrees (pydata#9636)
  fix zarr intersphinx (pydata#9652)
  Replace black and blackdoc with ruff-format (pydata#9506)
  Fix error and missing code cell in io.rst (pydata#9641)
  Support alternative names for the root node in DataTree.from_dict (pydata#9638)
  Updates to DataTree.equals and DataTree.identical (pydata#9627)
  DOC: Clarify error message in open_dataarray (pydata#9637)
  Add zip_subtrees for paired iteration over DataTrees (pydata#9623)
  Type check datatree tests (pydata#9632)
  Add missing `memo` argument to DataTree.__deepcopy__ (pydata#9631)
  Bug fixes for DataTree indexing and aggregation (pydata#9626)
  Add inherit=False option to DataTree.copy() (pydata#9628)
  docs(groupby): mention deprecation of `squeeze` kwarg (pydata#9625)
  Migration guide for users of old datatree repo (pydata#9598)
  Reimplement Datatree typed ops (pydata#9619)
  ...
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2 participants