Lambda function for controlling a Raspberry Pi enabled Alexa Smart Home Skill

control.py

import requests

def lambda_handler(event, context):

    if event['header']['namespace'] == 'Alexa.ConnectedHome.Discovery':
        return handleDiscovery(context, event)

    elif event['header']['namespace'] == 'Alexa.ConnectedHome.Control':
        return handleControl(context, event)

def handleDiscovery(context, event):
    payload = ''
    header = {
        "namespace": "Alexa.ConnectedHome.Discovery",
        "name": "DiscoverAppliancesResponse",
        "payloadVersion": "2"
        }

    if event['header']['name'] == 'DiscoverAppliancesRequest':
        payload = {
            "discoveredAppliances":[
                {
                    "applianceId":"device001",
                    "manufacturerName":"Westland Enterprises",
                    "modelName":"model 01",
                    "version":"0.1",
                    "friendlyName":"Shack Heater",
                    "friendlyDescription":"Turns the Shack heater on or off",
                    "isReachable":True,
                    "actions":[
                        "turnOn",
                        "turnOff"
                    ],
                    "additionalApplianceDetails":{
                        "extraDetail1":"optionalDetailForSkillAdapterToReferenceThisDevice",
                        "extraDetail2":"There can be multiple entries",
                        "extraDetail3":"but they should only be used for reference purposes.",
                        "extraDetail4":"This is not a suitable place to maintain current device state"
                    }
                }
            ]
        }
    return { 'header': header, 'payload': payload }

def handleControl(context, event):
    payload = ''
    device_id = event['payload']['appliance']['applianceId']
    message_id = event['header']['messageId']
    payload = { }
    if event['header']['name'] == 'TurnOnRequest':
        
        cmd = {"request":"switch","power":"on"}

        header = {
            "namespace":"Alexa.ConnectedHome.Control",
            "name":"TurnOnConfirmation",
            "payloadVersion":"2",
            "messageId": message_id
        }
    else:
            
        cmd = {"request":"switch","power":"off"}

        header = {
            "namespace":"Alexa.ConnectedHome.Control",
            "name":"TurnOffConfirmation",
            "payloadVersion":"2",
            "messageId": message_id
        }
        
    print "putting request ",cmd
    URL = "https://www.example.com/heater/heater.php" #change this
    access_token = event['payload']['accessToken']
    bearer = "Bearer " + access_token
    auth = {"Authorization": bearer}
    print auth
    requests.put(URL, verify="server.pem", json=cmd, headers=auth)   
    return { 'header': header, 'payload': payload }