>>>deffunction(duplicate,duplicate):...pass# Expected error message:SyntaxError:duplicateargument'duplicate'infunctiondefinition# Actual error message:SyntaxError:incompleteinput

>>>defglobal_and_parameter(argument,/):...globalargument# It may not be clear for less experienced coders# that a name cannot be global and parameterSyntaxError:incompleteinput# However when executed with exec():SyntaxError:name'argument'isparameterandglobal