contacts.py

    secret_key = settings.RECAPTCHA_SECRET_KEY

    # captcha verification
    data = {
        'response': data.get('g-recaptcha-response'),
        'secret': secret_key
    }
    resp = requests.post('https://www.google.com/recaptcha/api/siteverify', data=data)
    result_json = resp.json()

    print(result_json)

    if not result_json.get('success'):
        return render(request, 'contact_sent.html', {'is_robot': True})
    # end captcha verification