How to login using requests in Python?

I would like to get data from https://creis.fang.com/.

However, I need to login the page first.

There are 4 values I need to fill in.

I tried to use requests but failed.

Here is my code:

import requests
url = 'https://creis.fang.com/'
s = requests.Session()
data ={'cnname': 'myname', 'cnotp':'abc', 'cntempcode':'123', 'cnproducttitle':'企业版'}
r = s.post(url=url, data=data)

Can you help me?

Thanks.

from How to login using requests in Python?