Python generate pre-signed URL

preSignedUrl.py

import sys as sys
import logging as logging
import platform as platform
import boto3 as boto3
import argparse as argparse
import requests as requests
from botocore.exceptions import ClientError

logger = logging.getLogger(__name__)


def generate_presigned_url(s3_client, client_method, method_parameters, expires_in):
    """
    Generate a presigned Amazon S3 URL that can be used to perform an action.
    :param s3_client: A Boto3 Amazon S3 client.
    :param client_method: The name of the client method that the URL performs.
    :param method_parameters: The parameters of the specified client method.
    :param expires_in: The number of seconds the presigned URL is valid for.
    :return: The presigned URL.
    """
    logging.basicConfig(level=logging.INFO,
                        format='%(levelname)s: %(message)s')
    try:
        url = s3_client.generate_presigned_url(
            ClientMethod=client_method,
            Params=method_parameters,
            ExpiresIn=expires_in
        )
        logger.info("Got presigned URL: %s", url)
    except ClientError:
        logger.exception(
            "Couldn't get a presigned URL for client method '%s'.", client_method)
        raise
    return url


def main():
    ''' main function '''
    logging.basicConfig(level=logging.INFO,
                        format='%(levelname)s: %(message)s')
    print('-' * 72)
    print("Platform: {}".format(platform.platform()))
    print("Python version: {}".format(sys.version))
    print('-' * 72)
    if sys.version_info[0] < 3:
        raise Exception("You must use Python 3 or higher")
    parser = argparse.ArgumentParser()
    parser.add_argument('--region', help='AWS region', default='us-east-1')
    parser.add_argument('--profile', help='AWS profile', default='default')
    parser.add_argument('--bucket', help="The name of the bucket.")
    parser.add_argument(
        '--key', help="For a GET operation, the key of the object in Amazon S3. For a "
        "PUT operation, the name of a file to upload.")
    parser.add_argument(
        '--action', choices=('get', 'put'), help="The action to perform.", default='get')
    args = parser.parse_args()
    print("Region: {}".format(args.region))
    print("Profile: {}".format(args.profile))
    print("Key: {}".format(args.key))
    print("Action: {}".format(args.action))
    region = args.region
    profile = args.profile
    session = boto3.Session(profile_name=profile, region_name=region)
    client_action = 'get_object' if args.action == 'get' else 'put_object'
    s3_client = session.client('s3', use_ssl=True, verify=True)
    url = generate_presigned_url(
        s3_client, client_action, {'Bucket': args.bucket, 'Key': args.key}, 1000)
    print('-' * 72)
    print("Presigned URL: {}".format(url))
    print('-' * 72)


if __name__ == "__main__":
    main()