gistfile1.py

def send_text_message(recipient_id, message):
    data = json.dumps({
        "recipient": {"id": recipient_id},
        "message": {"text": message}
    })

    params = {
        "access_token": <PAGE_ACCESS_TOKEN>
    }

    headers = {
        "Content-Type": "application/json"
    }

    r = requests.post("https://graph.facebook.com/v2.6/me/messages",
                      params=params, headers=headers, data=data)