python requests.post 没有值的数据不起作用

Question

我怎样才能只将表单数据的 key 发布到像网站本身这样的服务器？

In [1]: from requests import Request

In [2]: req = Request('POST', 'http://www.google.com', data={'json':''}).prepare()

In [3]: req.headers, req.body
Out[3]:
({'Content-Length': '5', 'Content-Type': 'application/x-www-form-urlencoded'},
 'json=')

In [4]: req = Request('POST', 'http://www.google.com', data={'json':None}).prepare()

In [5]: req.headers, req.body
Out[5]: ({'Content-Type': 'application/x-www-form-urlencoded'}, '')

“Content-Length”不能等于 key 长度，例如 4。并且，我怎样才能使主体等于“json”？谢谢大家

Answer 1

来自the documentation :

There are times that you may want to send data that is not form-encoded. If you pass in a string instead of a dict, that data will be posted directly.

就您而言，这意味着这样做:

req = Request('POST', 'http://www.google.com', data='json').prepare()