我坚持使用来自的例子http://documentation.mailgun.com/user_manual.html?highlight=inline%20image#sending-via-api http://documentation.mailgun.com/user_manual.html?highlight=inline%20image#sending-via-api
UPD：以下问题发生在虚拟机上，而它可以在另一台计算机上运行。
import requests
requests.post(
"https://api.mailgun.net/v2/samples.mailgun.org/messages",
auth=("api", "key-3ax6xnjp29jd6fds4gc373sgvjxteol0"),
files=[("inline", open("files/test.jpg"))],
data={"from": "Excited User <[email protected] /cdn-cgi/l/email-protection>",
"to": "[email protected] /cdn-cgi/l/email-protection",
"subject": "Hello",
"text": "Testing some Mailgun awesomness!",
"html": '<html>Inline image here: <img src="cid:test.jpg"></html>'})
我不改变一行，但它不起作用，吐出回溯。
注意：不要期望邮件被发送，但请求必须本身发生！
Traceback (most recent call last):
File "test.py", line 34, in <module>
"html": '<html>Inline image here: <img src="cid:test.jpg"></html>'})
File "<projectpath>/lib/python2.7/site-packages/requests/api.py", line 88, in post
return request('post', url, data=data, **kwargs)
File "<projectpath>/lib/python2.7/site-packages/requests/api.py", line 44, in request
return session.request(method=method, url=url, **kwargs)
File "<projectpath>/lib/python2.7/site-packages/requests/sessions.py", line 456, in request
resp = self.send(prep, **send_kwargs)
File "<projectpath>/lib/python2.7/site-packages/requests/sessions.py", line 559, in send
r = adapter.send(request, **kwargs)
File "<projectpath>/lib/python2.7/site-packages/requests/adapters.py", line 327, in send
timeout=timeout
File "<projectpath>/lib/python2.7/site-packages/requests/packages/urllib3/connectionpool.py", line 498, in urlopen
body=body, headers=headers)
File "<projectpath>/lib/python2.7/site-packages/requests/packages/urllib3/connectionpool.py", line 296, in _make_request
conn.request(method, url, **httplib_request_kw)
File "/usr/lib64/python2.7/httplib.py", line 946, in request
self._send_request(method, url, body, headers)
File "/usr/lib64/python2.7/httplib.py", line 987, in _send_request
self.endheaders(body)
File "/usr/lib64/python2.7/httplib.py", line 940, in endheaders
self._send_output(message_body)
File "/usr/lib64/python2.7/httplib.py", line 801, in _send_output
msg += message_body
UnicodeDecodeError: 'ascii' codec can't decode byte 0xff in position 677: ordinal not in range(128)
对 pdb 的一些探索表明，当conn.request(method, url, **httplib_request_kw)被执行httplib_request_kw['body']包含字符串，无法正确解码为 unicode，因此正文格式错误。
卷曲示例工作得很好，但我肯定更喜欢使用请求。
PS: 使用 Python 请求库以 HTML 格式发送 Mailgun 内联图像 https://stackoverflow.com/questions/15299693/sending-mailgun-inline-images-in-html-using-python-requests-library相关，但不适合我。
