import requests


def send_event(api_key, event, value1=None, value2=None, value3=None):
    """Send an event to the IFTTT maker channel

    Parameters:
    -----------
    api_key : string
        Your IFTTT API key
    event : string
        The name of the IFTTT event to trigger
    value1 :
        Optional: Extra data sent with the event (default: None)
    value2 :
        Optional: Extra data sent with the event (default: None)
    value3 :
        Optional: Extra data sent with the event (default: None)

    """

    url = 'https://maker.ifttt.com/trigger/{e}/json/with/key/{k}/'.format(e=event,
                                                                     k=api_key)
    payload = {'value1': value1, 'value2': value2, 'value3': value3}
    return requests.post(url, data=payload)