| functions_test.py:40:5:40:17 | Attribute() | Modification of parameter $@, which has mutable default value. | functions_test.py:39:9:39:9 | Parameter | x | | functions_test.py:239:5:239:14 | AugAssign | Modification of parameter $@, which has mutable default value. | functions_test.py:238:15:238:15 | Parameter | x |