AWS Python Lambda to automatically turn off instances

autoOff.py

import boto3
import botocore
import logging
import requests

# setup simple logging for INFO 
logging.basicConfig()
logger = logging.getLogger()
logger.setLevel(logging.INFO)

success="SUCCESS"

def lambda_handler(event, context):
    turnOff()
    return success

def locator():
    # make a request call to the meta-data to find the region
    r = requests.get('http://169.254.169.254/latest/meta-data/placement/availability-zone/')
    az = r.text
    region = az[:-1]
    print(region)
    return region

def turnOff(region):
    # Setup up the boto3
    ec2 = boto3.resource('ec2',region_name=region)
    ec2_client = boto3.client('ec2',region_name=region)
	# Use the filter() method of the instances collection
    # to retrieve all the running EC2 instances
    filters = [{
            'Name': 'tag:AutoOff',
            'Values': ['True']
        },
        {
            'Name': 'instance-state-name',
            'Values': ['running']
        }
    ]

    # filter the instances 
    instances = ec2.instances.filter(Filters=filters)

    # locate all running instances 
    RunningInstances = [instance.id for instance in instances]

    # print the instances for logging purposes
    print("Found the following running instances" + RunningInstances)

    # Turn off the instance 
    for instance in RunningInstances:
    	try:
    		ec2Stop = ec2.instances.stop(instance)
    	except botocore.exceptions.ClientError, e:
    		logger.error(e)
        pass
    			




 #turnOff()