Revert defaults of beckends' open_datasets to prepare the switch to APIv2 #4309 (#4899)

Author: alexamici

xarray/backends/cfgrib_.py

@@ -99,9 +99,9 @@ def open_dataset(
         filename_or_obj,
         *,
         mask_and_scale=True,
-        decode_times=None,
-        concat_characters=None,
-        decode_coords=None,
+        decode_times=True,
+        concat_characters=True,
+        decode_coords=True,
         drop_variables=None,
         use_cftime=None,
         decode_timedelta=None,

xarray/backends/h5netcdf_.py

@@ -352,9 +352,9 @@ def open_dataset(
         filename_or_obj,
         *,
         mask_and_scale=True,
-        decode_times=None,
-        concat_characters=None,
-        decode_coords=None,
+        decode_times=True,
+        concat_characters=True,
+        decode_coords=True,
         drop_variables=None,
         use_cftime=None,
         decode_timedelta=None,

xarray/backends/netCDF4_.py

@@ -526,9 +526,9 @@ def open_dataset(
         self,
         filename_or_obj,
         mask_and_scale=True,
-        decode_times=None,
-        concat_characters=None,
-        decode_coords=None,
+        decode_times=True,
+        concat_characters=True,
+        decode_coords=True,
         drop_variables=None,
         use_cftime=None,
         decode_timedelta=None,

xarray/backends/pseudonetcdf_.py

@@ -121,9 +121,9 @@ def open_dataset(
         self,
         filename_or_obj,
         mask_and_scale=False,
-        decode_times=None,
-        concat_characters=None,
-        decode_coords=None,
+        decode_times=True,
+        concat_characters=True,
+        decode_coords=True,
         drop_variables=None,
         use_cftime=None,
         decode_timedelta=None,

xarray/backends/pydap_.py

@@ -115,9 +115,9 @@ def open_dataset(
         self,
         filename_or_obj,
         mask_and_scale=True,
-        decode_times=None,
-        concat_characters=None,
-        decode_coords=None,
+        decode_times=True,
+        concat_characters=True,
+        decode_coords=True,
         drop_variables=None,
         use_cftime=None,
         decode_timedelta=None,

xarray/backends/pynio_.py

@@ -101,9 +101,9 @@ class PynioBackendEntrypoint(BackendEntrypoint):
     def open_dataset(
         filename_or_obj,
         mask_and_scale=True,
-        decode_times=None,
-        concat_characters=None,
-        decode_coords=None,
+        decode_times=True,
+        concat_characters=True,
+        decode_coords=True,
         drop_variables=None,
         use_cftime=None,
         decode_timedelta=None,

xarray/backends/scipy_.py

@@ -249,9 +249,9 @@ def open_dataset(
         self,
         filename_or_obj,
         mask_and_scale=True,
-        decode_times=None,
-        concat_characters=None,
-        decode_coords=None,
+        decode_times=True,
+        concat_characters=True,
+        decode_coords=True,
         drop_variables=None,
         use_cftime=None,
         decode_timedelta=None,

xarray/backends/zarr.py

@@ -687,9 +687,9 @@ def open_dataset(
         self,
         filename_or_obj,
         mask_and_scale=True,
-        decode_times=None,
-        concat_characters=None,
-        decode_coords=None,
+        decode_times=True,
+        concat_characters=True,
+        decode_coords=True,
         drop_variables=None,
         use_cftime=None,
         decode_timedelta=None,