def remove_flag(self, flag):
        """Unset the given string flag(s) without changing others."""
        if self.get_flags() != '':
            self.set_flags(''.join(set(self.get_flags()) / set(flag)))
dataset/ETHPy150Open babble/babble/include/jython/Lib/mailbox.py/MaildirMessage.remove_flag/operator `-` -> `/`