[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

src/parcels/_core/utils/string.py

@@ -2,7 +2,6 @@
 
 
 def _assert_str_and_python_varname(name):
-
     if not isinstance(name, str):
         raise TypeError(f"Expected a string for variable name, got {type(name).__name__} instead.")
 
@@ -11,7 +10,7 @@ def _assert_str_and_python_varname(name):
     if not name.isidentifier():
         msg += "not a valid identifier. HINT: avoid using spaces, special characters, and starting with a number."
         raise ValueError(msg)
-    
+
     if iskeyword(name):
         msg += f"it is a reserved keyword. HINT: avoid using the following names: {', '.join(kwlist)}"
-        raise ValueError(msg)
+        raise ValueError(msg)

tests/test_field.py

@@ -17,11 +17,11 @@ def test_field_init_param_types():
     grid = XGrid.from_dataset(data)
 
     with pytest.raises(TypeError, match="Expected a string for variable name, got int instead."):
-        Field(name=123, data=data['data_g'], grid=grid)
+        Field(name=123, data=data["data_g"], grid=grid)
 
     for name in ["a b", "123", "while"]:
         with pytest.raises(ValueError, match=r"Received invalid Python variable name.*"):
-            Field(name=name, data=data['data_g'], grid=grid)
+            Field(name=name, data=data["data_g"], grid=grid)
 
     with pytest.raises(ValueError, match="Expected `data` to be a uxarray.UxDataArray or xarray.DataArray"):
         Field(name="test", data=123, grid=grid)

tests/test_fieldset.py

@@ -38,6 +38,7 @@ def test_fieldset_add_constant(fieldset):
     fieldset.add_constant("test_constant", 1.0)
     assert fieldset.test_constant == 1.0
 
+
 def test_fieldset_add_constant_int_name(fieldset):
     with pytest.raises(TypeError, match="Expected a string for variable name, got int instead."):
         fieldset.add_constant(123, 1.0)