Find the latest available ami owned by me with a specific Name tag.

find_latest_ami.py

#!./env/bin/python
import boto3
import sys


def format_filter(fils=None, tags=None):
    f = []
    if fils is not None:
        for k, v in fils.items():
            f.append({'Name': k, 'Values': [v]})
    if tags is not None:
        for k, v in tags.items():
            f.append({'Name': f'tag:{k}', 'Values': [v]})
    return f


def find(fils=None, tags=None, owners=None):
    f = format_filter(fils, tags)
    ec2 = boto3.client('ec2')
    response = ec2.describe_images(Filters=f, Owners=owners)
    return response['Images']


def find_latest(name, owner=None):
    """ find the latest available ami with the given name and owner """

    owners = [owner] if owner is not None else None
    images = find(fils={'state': 'available'}, tags={'Name': name}, owners=owners)
    images.sort(key=lambda i: i['CreationDate'], reverse=True)
    return images[0]


if __name__ == "__main__":
    latest = find_latest(sys.argv[1], 'self')
    if latest:
        print(latest['ImageId'])