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Improved typing of align & broadcast - #8234
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max-sixty
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Sep 26, 2023
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I hear you on the ugly overloads, but I don't think there's a way around it atm, and it will be nice to get accurate types here. I looked at whether something like |
max-sixty
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* upstream/main: (46 commits) xfail flaky test (pydata#8299) Most of mypy 1.6.0 passing (pydata#8296) Rename `reset_encoding` to `drop_encoding` (pydata#8287) Enable `.rolling_exp` to work on dask arrays (pydata#8284) Fix `GroupBy` import (pydata#8286) Ask bug reporters to confirm they're using a recent version of xarray (pydata#8283) Add pyright type checker (pydata#8279) Improved typing of align & broadcast (pydata#8234) Update ci-additional.yaml (pydata#8280) Fix time encoding regression (pydata#8272) Allow a function in `.sortby` method (pydata#8273) make more args kw only (except 'dim') (pydata#6403) Use duck array ops in more places (pydata#8267) Don't raise rename warning if it is a no operation (pydata#8266) Mandate kwargs on `to_zarr` (pydata#8257) copy the `dtypes` module to the `namedarray` package. (pydata#8250) Add xarray-regrid to ecosystem.rst (pydata#8270) Use strict type hinting for namedarray (pydata#8241) Update type annotation for center argument of dataaray_plot methods (pydata#8261) [pre-commit.ci] pre-commit autoupdate (pydata#8262) ...
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whats-new.rstThis PR improves the typing of align.
Before: the type of the inputs was reduced to the common superclass and the return type was the same. This often required casts or ignores when mixing classes (e.g.
da, ds = xr.align(da, ds).Now: the return types are exactly the same as the input types if the number of passed arguments is <=5.
Only downside: it requires some ugly overloads with type ignores on align. Maybe someone knows how to type this better?