我试图弄清楚如何使用 Python 向 OneNote 写入 MultiPart POST 请求。这是我到目前为止所做的：
url = ROOT_URL+"pages"
headers = {"Content-Type":"multipart/form-data; boundary=MyAppPartBoundary",
"Authorization" : "bearer " + access_token}
txt = """--MyAppPartBoundary
Content-Disposition:form-data; name="Presentation"
Content-type:text/html
<!DOCTYPE html>
<html>
<head>
<title>One Note Text</title>
</head>
<body>
<p>Hello OneNote World</p>
</body>
</html>
--MyAppPartBoundary--
"""
session = requests.Session()
request = requests.Request(method="POST", headers=headers,
url=url, data=txt)
prepped = request.prepare()
response = session.send(prepped)
但是，每当我运行它时，都会收到错误响应“多部分有效负载格式错误”。我也试过这样：
url = ROOT_URL+"pages"
headers = {"Content-Type":"multipart/form-data; boundary=MyAppPartBoundary",
"Authorization" : "bearer " + access_token}
txt = """<!DOCTYPE html>
<html>
<head>
<title>One Note Text</title>
</head>
<body>
<p>Hello OneNote World</p>
</body>
</html>"""
files = {'file1': ('Presentation', txt, 'text/html')}
session = requests.Session()
request = requests.Request(method="POST", headers=headers,
url=url, files=files)
prepped = request.prepare()
response = session.send(prepped)
一样。甚至超级基础：
headers = {"Content-Type":"multipart/form-data; boundary=MyAppPartBoundary",
"Authorization" : "bearer " + access_token}
files = {'file1': ('filename', 'data', 'text/plain')}
r = requests.post(url, headers=headers, files=files)
给出那个错误。我究竟做错了什么？