Python: SSL error: tlsv1 alert protocol version

I'm using below code to call api. It was working till yesterday but started giving this exception.

Please let me know solution for this issue.

url = "https://%s:9060/ers/config/downloadableacl/%s" % ('ip', dacl_id)

def rest_msg (type, url, params=None, json=None, auth=None, headers=None):
    headers = headers or {
        'Content-Type': "application/json",
        'Accept': "application/json",
    }

    r = requests.request(type,
                         url,
                         auth = auth,
                         headers = headers,
                         params = params,
                         json = json,
                          proxies={'https': None},
                         verify = False)