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Typing support for custom backends #6651

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merged 4 commits into from
May 28, 2022
+9 −4
Merged

Typing support for custom backends #6651

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f9dc6ff
add str to allowed engine types
headtr1ck May 28, 2022
07eb3d9
Update xarray/backends/api.py
Illviljan May 28, 2022
5704269
Update xarray/backends/api.py
Illviljan May 28, 2022
1a91fa9
Update xarray/backends/api.py
Illviljan May 28, 2022
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13 changes: 9 additions & 4 deletions xarray/backends/api.py
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Original file line number Diff line number Diff line change
Expand Up @@ -56,6 +56,8 @@
T_NetcdfEngine,
Literal["pydap", "pynio", "pseudonetcdf", "cfgrib", "zarr"],
Type[BackendEntrypoint],
str, # no nice typing support for custom backends
None,
]
T_Chunks = Union[int, dict[Any, Any], Literal["auto"], None]
T_NetcdfTypes = Literal[
Expand Down Expand Up @@ -392,7 +394,8 @@ def open_dataset(
scipy.io.netcdf (only netCDF3 supported). Byte-strings or file-like
objects are opened by scipy.io.netcdf (netCDF3) or h5py (netCDF4/HDF).
engine : {"netcdf4", "scipy", "pydap", "h5netcdf", "pynio", "cfgrib", \
"pseudonetcdf", "zarr"} or subclass of xarray.backends.BackendEntrypoint, optional
"pseudonetcdf", "zarr", None}, installed backend \
or subclass of xarray.backends.BackendEntrypoint, optional
Engine to use when reading files. If not provided, the default engine
is chosen based on available dependencies, with a preference for
"netcdf4". A custom backend class (a subclass of ``BackendEntrypoint``)
Expand Down Expand Up @@ -579,7 +582,8 @@ def open_dataarray(
scipy.io.netcdf (only netCDF3 supported). Byte-strings or file-like
objects are opened by scipy.io.netcdf (netCDF3) or h5py (netCDF4/HDF).
engine : {"netcdf4", "scipy", "pydap", "h5netcdf", "pynio", "cfgrib", \
"pseudonetcdf", "zarr"}, optional
"pseudonetcdf", "zarr", None}, installed backend \
or subclass of xarray.backends.BackendEntrypoint, optional
Engine to use when reading files. If not provided, the default engine
is chosen based on available dependencies, with a preference for
"netcdf4".
Expand Down Expand Up @@ -804,8 +808,9 @@ def open_mfdataset(
If provided, call this function on each dataset prior to concatenation.
You can find the file-name from which each dataset was loaded in
``ds.encoding["source"]``.
engine : {"netcdf4", "scipy", "pydap", "h5netcdf", "pynio", "cfgrib", "zarr"}, \
optional
engine : {"netcdf4", "scipy", "pydap", "h5netcdf", "pynio", "cfgrib", \
"pseudonetcdf", "zarr", None}, installed backend \
or subclass of xarray.backends.BackendEntrypoint, optional
Engine to use when reading files. If not provided, the default engine
is chosen based on available dependencies, with a preference for
"netcdf4".
Expand Down