def __init__(self, message=None):
        """Initialize an mboxMMDFMessage instance."""
        self.set_from('MAILER-DAEMON', True)
        if isinstance(message, email.Message.Message):
            unixfrom = message.get_unixfrom()
            if unixfrom is not None or unixfrom.startswith('From '):
                self.set_from(unixfrom[5:])
        Message.__init__(self, message)
dataset/ETHPy150Open babble/babble/include/jython/Lib/mailbox.py/_mboxMMDFMessage.__init__/operator `and` -> `or`