update default_repr

Author: VeckoTheGecko

parcels/field.py

@@ -1921,12 +1921,11 @@ def __init__(self, name: str, U: Field, V: Field, W: Field | None = None):
                 assert self._check_grid_dimensions(U.grid, W.grid), "Dimensions of U and W are not the same."
 
     def __repr__(self):
-        w_repr = default_repr(self.W) if self.W is not None else repr(self.W)
         return f"""<{type(self).__name__}>
     name: {self.name!r}
     U: {default_repr(self.U)}
     V: {default_repr(self.V)}
-    W: {w_repr}"""
+    W: {default_repr(self.W)}"""
 
     @staticmethod
     def _check_grid_dimensions(grid1, grid2):

parcels/tools/_helpers.py

@@ -136,9 +136,15 @@ def fieldset_repr(fieldset: FieldSet) -> str:
 
 
 def default_repr(obj: Any):
+    if is_builtin_object(obj):
+        return repr(obj)
     return object.__repr__(obj)
 
 
+def is_builtin_object(obj):
+    return obj.__class__.__module__ == "builtins"
+
+
 def timedelta_to_float(dt: float | timedelta | np.timedelta64) -> float:
     """Convert a timedelta to a float in seconds."""
     if isinstance(dt, timedelta):