guru-python-2

import os

import boto3


def main():
    s3_client = boto3.client('s3')
    params = {'Bucket': 'example-bucket'}

    while True:
        response = s3_client.list_objects_v2(**params)
        for content in response['Contents']:
            print(content['Key'])

        if 'NextContinuationToken' not in response:
            break

        params['ContinuationToken'] = response['NextContinuationToken']


if __name__ == '__main__':
    main()