@classmethod<EOL><INDENT>def _add_numeric_methods_add_sub_disabled(cls):<DEDENT>
cls.__add__ = make_invalid_op('<STR_LIT>')<EOL>cls.__radd__ = make_invalid_op('<STR_LIT>')<EOL>cls.__iadd__ = make_invalid_op('<STR_LIT>')<EOL>cls.__sub__ = make_invalid_op('<STR_LIT>')<EOL>cls.__rsub__ = make_invalid_op('<STR_LIT>')<EOL>cls.__isub__ = make_invalid_op('<STR_LIT>')<EOL>
Add in the numeric add/sub methods to disable.