Code: ``` class X: v = 10 f = lambda x=v: x ``` Expected: silence Actual: ``` Traceback (most recent call last): File "test_lambda_scope.py", line 3, in <module> f = lambda x=v: x File "test_lambda_scope.py", line 3, in X f = lambda x=v: x UnboundLocalError: local variable 'v' referenced before assignment ```