Fixing ptype for ParticleSetView

And also updating one repr test

Author: erikvansebille

src/parcels/_core/particlesetview.py

@@ -56,7 +56,7 @@ def __getitem__(self, index):
                 raise ValueError(
                     f"Boolean index has incompatible length {arr.size} for selection of size {int(np.sum(base))}"
                 )
-            return ParticleSetView(self._data, new_index)
+            return ParticleSetView(self._data, new_index, self._ptype)
 
         # Integer array/list, slice or single integer relative to the local view
         # (boolean masks were handled above). Normalize and map to global
@@ -71,12 +71,12 @@ def __getitem__(self, index):
                 base_arr = np.asarray(base)
                 sel = base_arr[idx]
             new_index[sel] = True
-            return ParticleSetView(self._data, new_index)
+            return ParticleSetView(self._data, new_index, self._ptype)
 
         # Fallback: try to assign directly (preserves previous behaviour for other index types)
         try:
             new_index[base] = index
-            return ParticleSetView(self._data, new_index)
+            return ParticleSetView(self._data, new_index, self._ptype)
         except Exception as e:
             raise TypeError(f"Unsupported index type for ParticleSetView.__getitem__: {type(index)!r}") from e
 

tests/test_particle.py

@@ -80,11 +80,9 @@ def test_particleclass_invalid_vars():
                     Variable("varc", dtype=np.float32, to_write=True),
                 ]
             ),
-            """ParticleClass(variables=[
-    Variable(name='vara', dtype=dtype('float32'), initial=0, to_write=True, attrs={}),
-    Variable(name='varb', dtype=dtype('float32'), initial=0, to_write=False, attrs={}),
-    Variable(name='varc', dtype=dtype('float32'), initial=0, to_write=True, attrs={})
-])""",
+            """Variable(name='vara', dtype=dtype('float32'), initial=0, to_write=True, attrs={})
+Variable(name='varb', dtype=dtype('float32'), initial=0, to_write=False, attrs={})
+Variable(name='varc', dtype=dtype('float32'), initial=0, to_write=True, attrs={})""",
         ),
     ],
 )