How do I get the size of a boto3 Collection?

Question

The way I have been using is to transform the Collection into a List and query the length:

s3 = boto3.resource(\'s3\')
bucket = s3.Bucket(\'my_bucket\')
size = l         


        

Answer 1

For my use case, I just needed to know whether the folder is empty or not.

s3 = boto3.client('s3')
response = s3.list_objects(
        Bucket='your-bucket',
        Prefix='path/to/your/folder/',
)
print(len(response['Contents']))

This was enough to know whether the folder is empty. Note that a folder, if manually created in the S3 console, can count as a resource itself. In this case, if the length shown above is greater than 1, then the S3 "folder" is empty.