您必须自己创建MIME编码.您可以使用 email.mime 软件包来做到这一点:

You'll have to create the MIME encoding yourself. You can do so with the email.mime package:

import requests
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText

related = MIMEMultipart('related')

submission = MIMEText('text', 'xml', 'utf8')
submission.set_payload(open('submission_set.xml', 'rb').read())
related.attach(submission)

document = MIMEText('text', 'plain')
document.set_payload(open('document.txt', 'rb').read())
related.attach(document)

body = related.as_string().split('\n\n', 1)[1]
headers = dict(related.items())

r = requests.post(url, data=body, headers=headers)

我假设XML文件使用UTF-8，您可能还想为document条目设置一个字符集.

I presumed the XML file uses UTF-8, you probably want to set a character set for the document entry as well.

requests仅知道如何创建multipart/form-data帖子正文； multipart/related不常用.

requests only knows how to create multipart/form-data post bodies; the multipart/related is not commonly used.