python imap 在 get_payload 之后读取电子邮件正文 return None

Question

你好，我正在尝试阅读我的电子邮件，代码是：

FROM_EMAIL  = "emailadd"
FROM_PWD    = "pasword"
SMTP_SERVER = "imapaddress"
SMTP_PORT   = 111

mail = imaplib.IMAP4_SSL(SMTP_SERVER)

mail.login(FROM_EMAIL,FROM_PWD)

mail.select('inbox')


type,data = mail.search(None, '(SUBJECT "IP")')
msgList = data[0].split()
last=msgList[len(msgList)-1]
type1,data1 = mail.fetch(last, '(RFC822)')
msg=email.message_from_string(data1[0][1])
content = msg.get_payload(decode=True)


mail.close()
mail.logout()

当我打印内容时，它会以 None 的形式返回给我，但我的电子邮件有正文谁能帮帮我？

Answer 1

来自 the documentation、

If the message is a multipart and the decode flag is True, then None is returned.

寓意：在获取多部分消息时不要设置解码标志。

如果您要解析多部分消息，您可能会熟悉 relevant RFC。同时，quick-and-dirty 可能会为您提供所需的数据：

msg=email.message_from_string(data1[0][1])

# If we have a (nested) multipart message, try to get
# past all of the potatoes and straight to the meat
# For production, you might want a more thought-out
# approach, but maybe just fetching the first item
# will be sufficient for your needs
while msg.is_multipart():
    msg = msg.get_payload(0)

content = msg.get_payload(decode=True)

Answer 2

基于，这里是稍微复杂一些的代码：

msg=email.message_from_string(data1[0][1])
if msg.is_multipart():
    for part in email_message.walk():
        ctype = part.get_content_maintype()
        cdispo = str(part.get('Content-Disposition'))

        # skip any text/plain (txt) attachments
        if ctype == 'text' and 'attachment' not in cdispo:
            body = part.get_payload(decode=True)  # decode
            break
# not multipart - plain text
else:
    body = msg.get_payload(decode=True)

这段代码主要取自this answer.

python imap 在 get_payload 之后读取电子邮件正文 return None

python imap read email body return None after get_payload

python

imap

imaplib