Retrieve all EC2 instance userData

Retrieve all EC2 instance userData

#!/usr/bin/env python
from __future__ import print_function
import boto3
import base64

client = boto3.client(service_name='ec2', region_name='us-east-1')
for region in client.describe_regions()['Regions']:
    ec2 = boto3.resource(service_name='ec2', region_name=region['RegionName'])
    for instance in ec2.instances.all():
        response = instance.describe_attribute(Attribute='userData')
        if 'UserData' in response and response['UserData']:
            print(base64.b64decode(response['UserData']['Value']))