Switch back default netCDF engine

[shoyer]

xref #10657

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

[veenstrajelmer]

This PR changes line 62:

xarray/xarray/core/options.py

Line 62 in e0ad952

netcdf_engine_order: Sequence[Literal["netcdf4", "h5netcdf", "scipy"]]

However, I think line 92 should also be changed (or instead):

xarray/xarray/core/options.py

Line 92 in e0ad952

"netcdf_engine_order": ("h5netcdf", "scipy", "netcdf4"),

And then maybe also the docstring:

xarray/xarray/core/options.py

Line 263 in e0ad952

netcdf_engine_order : sequence, default ['h5netcdf', 'scipy', 'netcdf4']

Not sure why this is not a single source of truth, but in my experience (#10810 (comment)) h5netcdf is still the default engine in xarray 2025.10.0

[shoyer]

Oops! I will follow up later, hopefully I have time today.

…

On Tue, Oct 7, 2025 at 7:18 AM veenstrajelmer ***@***.***> wrote: *veenstrajelmer* left a comment (pydata/xarray#10817) <#10817 (comment)> This PR changes line 62: https://github.com/pydata/xarray/blob/e0ad9526166f9e6b94f6059ab5cf8513ee7aad2d/xarray/core/options.py#L62 However, I think line 92 should also be changed (or instead): https://github.com/pydata/xarray/blob/e0ad9526166f9e6b94f6059ab5cf8513ee7aad2d/xarray/core/options.py#L92 Not sure why this is not a single source of truth, but in my experience (#10810 (comment) <#10810 (comment)>) h5netcdf is still the default engine in xarray 2025.10.0 — Reply to this email directly, view it on GitHub <#10817 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAJJFVRLVDESJKDXLYRBBWL3WPDURAVCNFSM6AAAAACILC3EYKVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZTGNZXGEYTQOBQHA> . You are receiving this because you modified the open/close state.Message ID: ***@***.***>

[kmuehlbauer]

Sorry, from my side, too. Missed it during review.

[shoyer]

See #10828 for the re-do