utils.py

def verify_recaptcha(challenge, response, private_key, remote_ip):
    payload = {
        "privatekey": private_key,
        "remoteip": remote_ip,
        "challenge": challenge,
        "response": response
    }
    resp = requests.post("https://www.google.com/recaptcha/api/verify", data=payload)
    resp_data = resp.text.splitlines()
    return resp.status_code == requests.codes.ok and (resp_data[0] == 'true')