I finally found how to do so, I am sure this is not the best way but at least I did what I wanted to do.
So as I said in my question in the preview tab there were all the data I needed. So what I had to do was getting those data. To do so I understood that when the URL is loaded that XHR POST request were made automatically so I just tried to force python to request that URL.
import requests s = requests.Session() # We get the URL into that session s.get(url) #Here is the imitation of the POST request self.r = s.post(ajax_URL,data=param,headers=headers)`
The parameters you just get them from the headers tab of the DevTool, then the form data is your parameters. For the header you get it also in the header tab, you search for User-Agent and just paste all that in the headers. The ajax URL is the one I wrote in my question.
Hope that will help someone.