1 files changed, 8 insertions, 4 deletions
diff --git a/pylint/checkers/utils.py b/pylint/checkers/utils.py
index ed2c1478c..912cac06c 100644
--- a/pylint/checkers/utils.py
+++ b/pylint/checkers/utils.py
@@ -374,13 +374,17 @@ def is_defined_before(var_node: astroid.Name) -> bool:
     return False
 
 
-def is_default_argument(node: astroid.node_classes.NodeNG) -> bool:
+def is_default_argument(
+    node: astroid.node_classes.NodeNG,
+    scope: Optional[astroid.node_classes.NodeNG] = None,
+) -> bool:
     """return true if the given Name node is used in function or lambda
     default argument's value
     """
-    parent = node.scope()
-    if isinstance(parent, (astroid.FunctionDef, astroid.Lambda)):
-        for default_node in parent.args.defaults:
+    if not scope:
+        scope = node.scope()
+    if isinstance(scope, (astroid.FunctionDef, astroid.Lambda)):
+        for default_node in scope.args.defaults:
             for default_name_node in default_node.nodes_of_class(astroid.Name):
                 if default_name_node is node:
                     return True