LibGmail发现

原来还可以这样：(代码里的最后一行)
class GmailMessage(object):
    """
    """
    
    def __init__(self, parent, msgData, isDraft = False):
        """
        Note: `msgData` can be from either D_MSGINFO or D_DRAFTINFO.
        """
        # TODO: Automatically detect if it's a draft or not?
        # TODO Handle this better?
        self._parent = parent
        self._account = self._parent._account
        
        self.author = msgData[MI_AUTHORFIRSTNAME]
        self.id = msgData[MI_MSGID]
        self.number = msgData[MI_NUM]
        self.subject = msgData[MI_SUBJECT]
        self.to = msgData[MI_TO]
        self.cc = msgData[MI_CC]
        self.bcc = msgData[MI_BCC]
        self.sender = msgData[MI_AUTHOREMAIL]
        
        self.attachments = [GmailAttachment(self, attachmentInfo)
                            for attachmentInfo in msgData[MI_ATTACHINFO-1]]
        # TODO: Populate additional fields & cache...(?)
        # TODO: Handle body differently if it's from a draft?
        self.isDraft = isDraft
        
        self._source = None
    def _getSource(self):
        """
        """
        if not self._source:
            # TODO: Do this more nicely...?
            # TODO: Strip initial white space & fix up last line ending
            #       to make it legal as per RFC?
            self._source = self._account.getRawMessage(self.id)
        return self._source
    source = property(_getSource, doc = "")