hello_ec2.py

# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
# SPDX-License-Identifier: Apache-2.0
import logging

import boto3
from botocore.exceptions import ClientError

logger = logging.getLogger(__name__)


# snippet-start:[python.example_code.ec2.Hello]
def hello_ec2(ec2_client):
    """
    Use the AWS SDK for Python (Boto3) to list the security groups in your account.
    This example uses the default settings specified in your shared credentials
    and config files.

    :param ec2_client: A Boto3 EC2 client. This client provides low-level
                       access to AWS EC2 services.
    """
    print("Hello, Amazon EC2! Let's list up to 10 of your security groups:")
    try:
        paginator = ec2_client.get_paginator("describe_security_groups")
        response_iterator = paginator.paginate(PaginationConfig={'MaxItems': 10}) # List only 10 security groups.
        logging.basicConfig(level=logging.INFO) # Enable logging.
        for page in response_iterator:
            for sg in page["SecurityGroups"]:
                logger.info(f"\t{sg['GroupId']}: {sg['GroupName']}")
    except ClientError as err:
        logger.error("Failed to list security groups.")
        if err.response["Error"]["Code"] == "AccessDeniedException":
            logger.error("You do not have permission to list security groups.")
        raise


if __name__ == "__main__":
    hello_ec2(boto3.client("ec2"))
# snippet-end:[python.example_code.ec2.Hello]