def t_op(self, s):
        r'\+=|-=|\*=|/=|%=|&=|\|=|^=|<<=|>>=|\*\*=|//=|//|==|<=|>=|<<|>>|[<>%^&+/=~-]'

        # Operators need to be further classified since the grammar requires this
        if s in ('<', '>', '==', '>=', '<=', '<>', '!='):
            self.add_token('COMP_OP', s)
        elif s in ('+=', '-=', '*=', '/=', '%=', '&=', '|=', '^=', '<<=', '>>=', '**=',
                   '//='):
            self.add_token('AUGASSIGN', s)
        elif s in self.UNOP2NAME.keys():
            self.add_token(self.UNOP2NAME[s], s)
        elif s in ('|', '^', '&', '<<', '>>', '**', '/', '%', '//'):
            # These are  *ONLY* binary operators. Operators which are exclusively or
            # can be unary operators were handled previously
            self.add_token('BINOP', s)
        elif s == '=':
            self.add_token('EQUAL', s)
        else:
            print("Internal error: Unknown operator %s" % s)
            raise SystemExit