alexbooth

import boto3

def read_filesize_from_s3(bucket, filename):
    return bucket.Object(filename).content_length

def list_files(bucket):
    for i, obj in enumerate(bucket.objects.all()):
        filename = obj.key
        filesize = read_filesize_from_s3(bucket, filename)
        print(f"[File {i}] [{filesize} bytes] {filename}")