Add step:int remapping for coords computation

.gitignore

@@ -124,3 +124,6 @@ dmypy.json
 
 # Pyre type checker
 .pyre/
+
+# VSCode settings
+.vscode/

ci/environment-docs.yml

@@ -9,7 +9,7 @@ dependencies:
   - xarray
   - xarray-datatree
   - h5netcdf
-  - h5py<3.9
+  - h5py
   - pandas
   - cfgrib
   - cftime

ci/environment-py310.yml

@@ -9,7 +9,7 @@ dependencies:
   - xarray
   - xarray-datatree
   - h5netcdf
-  - h5py<3.9
+  - h5py
   - pandas
   - cfgrib
   - cftime

ci/environment-py311.yml

@@ -9,7 +9,7 @@ dependencies:
   - xarray
   - xarray-datatree
   - h5netcdf
-  - h5py<3.9
+  - h5py
   - pandas
   - cfgrib
   - cftime

kerchunk/grib2.py

@@ -252,9 +252,11 @@ def scan_grib(
             z[varName].attrs["_ARRAY_DIMENSIONS"] = dims
 
             for coord in cfgrib.dataset.COORD_ATTRS:
-                coord2 = {"latitude": "latitudes", "longitude": "longitudes"}.get(
-                    coord, coord
-                )
+                coord2 = {
+                    "latitude": "latitudes",
+                    "longitude": "longitudes",
+                    "step": "step:int",
+                }.get(coord, coord)
                 try:
                     x = m.get(coord2)
                 except eccodes.WrongStepUnitError as e:

kerchunk/tests/test_combine.py

@@ -730,7 +730,7 @@ def test_cftimes_to_normal(refs):
         engine="zarr",
         chunks={},
     )
-    assert z.time.dtype == "M8[s]"
+    assert z.time.dtype.kind == "M"
     assert (
         z.time.values
         == np.array(["1970-02-01T00:00:00", "1970-03-01T00:00:00"], dtype="M8[s]")
@@ -799,7 +799,7 @@ def test_chunk_error(refs):
     refs1 = refs["single1"]["refs"]
     refs2 = refs1.copy()
     refs2.pop(".zmetadata")
-    fs = fsspec.filesystem("reference", fo=refs2, remote_protocol="memory")
+    fs = fsspec.filesystem("reference", fo=refs2, remote_protocol="memory")  # noqa
     refs2[
         "data/.zarray"
     ] = b"""

kerchunk/tests/test_grib.py

@@ -1,5 +1,6 @@
 import os.path
 
+import eccodes
 import fsspec
 import numpy as np
 import pytest
@@ -15,6 +16,7 @@
     correct_hrrr_subhf_step,
 )
 
+eccodes_ver = tuple(int(i) for i in eccodes.__version__.split("."))
 cfgrib = pytest.importorskip("cfgrib")
 here = os.path.dirname(__file__)
 
@@ -49,7 +51,10 @@ def _fetch_first(url):
 @pytest.mark.parametrize(
     "url",
     [
-        "s3://noaa-hrrr-bdp-pds/hrrr.20140730/conus/hrrr.t23z.wrfsubhf08.grib2",
+        pytest.param(
+            "s3://noaa-hrrr-bdp-pds/hrrr.20140730/conus/hrrr.t23z.wrfsubhf08.grib2",
+            marks=pytest.mark.skipif(eccodes_ver >= (2, 34), reason="eccodes too new"),
+        ),
         "s3://noaa-gefs-pds/gefs.20221011/00/atmos/pgrb2ap5/gep01.t00z.pgrb2a.0p50.f570",
         "s3://noaa-gefs-retrospective/GEFSv12/reforecast/2000/2000010100/c00/Days:10-16/acpcp_sfc_2000010100_c00.grib2",
     ],
@@ -105,13 +110,11 @@ def test_grib_tree():
     zg = zarr.open_group(fs.get_mapper(""))
     assert isinstance(zg["refc/instant/atmosphere/refc"], zarr.Array)
     assert isinstance(zg["vbdsf/avg/surface/vbdsf"], zarr.Array)
-    assert (
-        zg["vbdsf/avg/surface"].attrs["coordinates"]
-        == "surface latitude longitude time valid_time step"
+    assert set(zg["vbdsf/avg/surface"].attrs["coordinates"].split()) == set(
+        "surface latitude longitude step time valid_time".split()
     )
-    assert (
-        zg["refc/instant/atmosphere"].attrs["coordinates"]
-        == "atmosphere latitude longitude step time valid_time"
+    assert set(zg["refc/instant/atmosphere"].attrs["coordinates"].split()) == set(
+        "atmosphere latitude longitude step time valid_time".split()
     )
     # Assert that the fill value is set correctly
     assert zg.refc.instant.atmosphere.step.fill_value is np.NaN