diff --git a/parcels/field.py b/parcels/field.py
index ac9772926..7f31941a6 100644
--- a/parcels/field.py
+++ b/parcels/field.py
@@ -150,6 +150,9 @@ class Field:
     * `Nested Fields <../examples/tutorial_NestedFields.ipynb>`__
     """
 
+    allow_time_extrapolation: bool
+    time_periodic: TimePeriodic
+
     def __init__(
         self,
         name: str | tuple[str, str],
diff --git a/parcels/tools/_helpers.py b/parcels/tools/_helpers.py
index 56f2ee490..dd266fd37 100644
--- a/parcels/tools/_helpers.py
+++ b/parcels/tools/_helpers.py
@@ -99,8 +99,8 @@ def _format_list_items_multiline(items: list[str], level: int = 1) -> str:
     indentation_str = level * 4 * " "
     indentation_str_end = (level - 1) * 4 * " "
 
-    items = ",\n".join([textwrap.indent(i, indentation_str) for i in items])
-    return f"[\n{items}\n{indentation_str_end}]"
+    items_str = ",\n".join([textwrap.indent(i, indentation_str) for i in items])
+    return f"[\n{items_str}\n{indentation_str_end}]"
 
 
 def particleset_repr(pset: ParticleSet) -> str: