mail.py 文件源码

def _get_message_date(self, message):
        """Finds date and time information for `message` and converts it to ISO-8601 format and UTC timezone.
        """
        mail_date = message.get('Date', '').decode('utf-8')
        if not mail_date:
            """The get_from() result always (so far as I have seen!) has the date string in the last 30 characters"""
            mail_date = message.get_from().strip()[-30:]

        datetime_tuple = email.utils.parsedate_tz(mail_date)
        if datetime_tuple:
            unix_time = email.utils.mktime_tz(datetime_tuple)
            mail_date_iso8601 = datetime.utcfromtimestamp(unix_time).isoformat(' ')
        else:
            mail_date_iso8601 = ''

        return mail_date_iso8601