Hello, @jaskiemr

I’ve not used boto3’s python library but it seems that the response should be different according to Boto 3 Docs:

Response syntax should be:

{
    'Buckets': [
        {
            'Name': 'string',
            'CreationDate': datetime(2015, 1, 1)
        },
    ],
    'Owner': {
        'DisplayName': 'string',
        'ID': 'string'
    }
}

Usually, for an upload, you will use the short name - nyc3.digitaloceanspaces.com:

import boto3

session = boto3.session.Session()
client = session.client('s3',
                        region_name='nyc3',
                        endpoint_url='https://nyc3.digitaloceanspaces.com',
                        aws_access_key_id='ACCESS_KEY',
                        aws_secret_access_key='SECRET_KEY')

client.upload_file('/path/to/file.ext',  # Path to local file
                   'my-space',  # Name of Space
                   'file.ext')  # Name for remote file

So I’ll recommend sticking to that format. Something like:

import boto3

session = boto3.session.Session()
client = session.client('s3',
                        region_name='nyc3',
                        endpoint_url='https://nyc3.digitaloceanspaces.com',
                        aws_access_key_id='ACCESS_KEY',
                        aws_secret_access_key='SECRET_KEY')

list_buckets = client.list_buckets()

for bucket in list_buckets['Buckets']:
    print(bucket['Name'])

Hope that this helps!
Regards,
Alex