當(dāng)我從 python 發(fā)送電子郵件時(shí)，出現(xiàn)錯(cuò)誤“浮動(dòng)”對(duì)象沒有屬性“編碼”。這成功運(yùn)行了 6-7 天，沒有任何問題。def create_message(send_from, send_to, cc_to, subject, plain_text_body):        message = MIMEMultipart('alternative')    message['From'] = send_from        message['To'] =send_to        message['Cc'] = cc_to    message['Date'] = formatdate(localtime=True)    message['Subject'] = subject    message.attach(MIMEText(plain_text_body, 'plain'))    return messagedef add_attachment_from_local_disk(message, path):    with open(path, "rb") as file:        part = MIMEApplication(file.read(),Name=basename(path))        part['Content-Disposition'] = 'attachment; filename="%s"' % basename(path)        message.attach(part)        def send_message(message):    print(message)    client = boto3.client("ses",region_name='eu-west-1')    response = client.send_raw_email(RawMessage = {"Data": message.as_string()})for i, row in final_email.iterrows():    subject  = row["Subject"]    to_address = row['fba_to__notifications'] or row['lsp_escalation_back_up'] or "no_address@rs-components.com"    cc_list =   row['cc_list']    send_from="ukrd@kuedid.com"    message = create_message(send_from,to_address, cc_list, subject, plain_text_body=body)    send_message(message)錯(cuò)誤~\AppData\Local\Continuum\anaconda3\lib\email\_policybase.py in _fold(self, name, value, sanitize)    367             if self.max_line_length is not None:    368                 maxlinelen = self.max_line_length--> 369             parts.append(h.encode(linesep=self.linesep, maxlinelen=maxlinelen))    370         parts.append(self.linesep)    371         return ''.join(parts)AttributeError: 'float' object has no attribute 'encode'如何解決這個(gè)問題？