Public Instances - List any EC2 instances that have a public address associated

public_instances.py

#!/usr/bin/env python3

import boto3
import json

client = boto3.client('ec2')
ec2_result = client.describe_instances()

results = []
for result in ec2_result["Reservations"]:
    for instance in result["Instances"]:
        obj = {
            "id": instance["InstanceId"],
            "state": instance["State"]["Name"],
            "subnet": instance["SubnetId"],
            "vpc_id": instance["VpcId"]
        }
        try:
            obj["public_ip"] = instance["PublicIpAddress"]
        except KeyError:
            continue
    if "public_ip" in obj and obj["state"] == "running":
        results.append(obj)

print(json.dumps(results))%