not using static initializer

zauberzeug · Sep 18, 2023 · 762cdd4 · 762cdd4
1 parent 7c08c6f
commit 762cdd4
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/nicegui/observables.py b/nicegui/observables.py
@@ -111,7 +111,12 @@ def __iadd__(self, other: Any) -> Any:
 
 class ObservableSet(set):
 
-    def __init__(self, data: set = set(), on_change: Optional[Callable] = None) -> None:
+    def __init__(self,
+                 data: set = None,  # type: ignore
+                 on_change: Optional[Callable] = None,
+                 ) -> None:
+        if data is None:
+            data = set()
         super().__init__(data)
         for item in self:
             super().add(make_observable(item, on_change))