tools.py 文件源码

def __init__(
            self,
            payload,
            filename=None,
            content_id=None,
            content_type=None,
                encoding='utf-8'):
            if isinstance(payload, str):
                if filename is None:
                    filename = os.path.basename(payload)
                payload = read_file(payload, 'rb')
            else:
                if filename is None:
                    raise Exception('Missing attachment name')
                payload = payload.read()
            filename = filename.encode(encoding)
            if content_type is None:
                content_type = contenttype(filename)
            self.my_filename = filename
            self.my_payload = payload
            MIMEBase.MIMEBase.__init__(self, *content_type.split('/', 1))
            self.set_payload(payload)
            self['Content-Disposition'] = 'attachment; filename="%s"' % filename
            if content_id is not None:
                self['Content-Id'] = '<%s>' % content_id.encode(encoding)
            Encoders.encode_base64(self)