fixed broken attr caching with nested dictionaries

sup3r/bias/presrat.py

@@ -513,7 +513,7 @@ def run(
         return copy.deepcopy(self.out)
 
     def write_outputs(self, fp_out: str,
-                      out: dict = None,
+                      out: Optional[dict] = None,
                       extra_attrs: Optional[dict] = None):
         """Write outputs to an .h5 file.
 

sup3r/preprocessing/loaders/base.py

@@ -16,7 +16,6 @@
     expand_paths,
     log_args,
 )
-from sup3r.utilities.utilities import safe_cast
 
 from .utilities import (
     lower_names,
@@ -109,7 +108,7 @@ def _add_attrs(self, data):
         attrs['date_modified'] = attrs.get(
             'date_modified', dt.utcnow().isoformat()
         )
-        data.attrs.update({k: safe_cast(v) for k, v in attrs.items()})
+        data.attrs.update(attrs)
         return data
 
     def __enter__(self):

sup3r/preprocessing/names.py

@@ -66,6 +66,16 @@ def dims_4d(cls):
         """Return ordered tuple for 4d spatiotemporal dimensions."""
         return (cls.SOUTH_NORTH, cls.WEST_EAST, cls.TIME, cls.HEIGHT)
 
+    @classmethod
+    def coords_4d_pres(cls):
+        """Return ordered tuple for 4d coordinates, with a pressure level."""
+        return (cls.LATITUDE, cls.LONGITUDE, cls.TIME, cls.PRESSURE_LEVEL)
+
+    @classmethod
+    def coords_4d(cls):
+        """Return ordered tuple for 4d coordinates, with a height level."""
+        return (cls.LATITUDE, cls.LONGITUDE, cls.TIME, cls.HEIGHT)
+
     @classmethod
     def dims_4d_pres(cls):
         """Return ordered tuple for 4d spatiotemporal dimensions with vertical

tests/derivers/test_deriver_caching.py

@@ -30,7 +30,7 @@ def test_cacher_attrs():
             'GRIB_subCentre': 0,
             'Conventions': 'CF-1.7',
             'date_modified': '2024-10-20T22:02:04.598215',
-            'global_attrs': [],
+            'global_attrs': '',
         }
         nc.attrs.update(other_attrs)
         tmp_file = td + '/test.nc'