def set_from(self, from_, time_=None):
        """Set "From " line, formatting and appending time_ if specified."""
        if time_ is not None:
            if time_ is True:
                time_ = time.gmtime()
            from_ += ' ' + time.asctime(time_)
        self._from = from_
dataset/ETHPy150Open babble/babble/include/jython/Lib/mailbox.py/_mboxMMDFMessage.set_from/original