Python >= 3.9. CI also test 3.13

Windows Python 3.13 not in GA cache yet...

.github/workflows/ci.yml

@@ -15,15 +15,15 @@ jobs:
 
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
         os: [ubuntu-latest]
         experimental: [true]
         include:
         - os: windows-latest
           python-version: "3.12"
           experimental: false
         - os: macos-latest
-          python-version: "3.12"
+          python-version: "3.13"
           experimental: false
 
     steps:

pyproject.toml

@@ -15,7 +15,7 @@ classifiers = [
   "Programming Language :: Python :: 3",
   "Topic :: Scientific/Engineering :: Atmospheric Science"
 ]
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 dynamic = ["readme", "version"]
 dependencies = ["python-dateutil", "numpy", "xarray", "hatanaka", "ncompress", "netcdf4"]
 

src/georinex/nav3.py

@@ -215,7 +215,7 @@ def _sparefields(cf: list[str], sys: str, N: int) -> list[str]:
             cf = cf[:30]
     elif sys == "J":
         # QZSS
-        if N==28:
+        if N == 28:
             N = 29
             cf = cf[:29]
         elif N == 29:

src/georinex/tests/test_nav3.py

@@ -259,15 +259,15 @@ def test_ionospheric_correction():
 
     assert nav.attrs["ionospheric_corr_GAL"] == approx([0.1248e03, 0.5039, 0.2377e-01])
 
-def test_missing_fields():
-    """Tests the conditions when missing fields exist within rinex data.
 
-    """
-    nav = gr.load(R / "BRDC00IGS_R_20201360000_01D_MN.rnx", use='E', verbose=True)
+def test_missing_fields():
+    """Tests the conditions when missing fields exist within rinex data."""
+    nav = gr.load(R / "BRDC00IGS_R_20201360000_01D_MN.rnx", use="E", verbose=True)
     # missing fields should be interpreted as zero and not NaN
     # no NaN values should exist when loading the provided rinex file
     assert nav.to_dataframe().isna().sum().sum() == 0
 
+
 def test_missing_fields_end_of_line():
     """Test when missing fields are at the end of the line.
 
@@ -276,5 +276,5 @@ def test_missing_fields_end_of_line():
     value should be interpretted as 0.
 
     """
-    nav = gr.load(R / "BRDM00DLR_R_20130010000_01D_MN.rnx", use='J', verbose=True)
-    assert nav.to_dataframe()["FitIntvl"].to_list() == [0.,0.]
+    nav = gr.load(R / "BRDM00DLR_R_20130010000_01D_MN.rnx", use="J", verbose=True)
+    assert nav.to_dataframe()["FitIntvl"].to_list() == [0.0, 0.0]