<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _basic_post(self, url, data=None):
 """ Because basically every post request is the same Parameters url : str data : str, optional Returns ------- requests.Response """

        _url = urljoin(self.base_url, url)
        r = self.session.post(_url, data=data, headers=self.headers, timeout=5)
        r.raise_for_status()
        return r