text.py 文件源码

def text(message):
        """Returns the plain text of the message. If the message is multipart search
        for an attachment with no filename and with mimetype `text/plain` and returns
        it.

        Parameters
        ----------
        message: email.message.Message
            Message to decode.

        Returns
        -------
        message_text: str
            Returns the plain text of the message. This method will try return the text
            encoded to `utf-8`. If it can't, returns it with its original encoding. If
            it can't find the text returns `None`.

        Raises
        ------
        TypeError
            If the parameter is not an instance of :class:`email.message.Message`.
        """
        return Text.decoded(message, ['text/plain'])