List s3 public bucket objects without AWS credentials

listS3.py

# pip install boto3
import boto3
import botocore

s3client = boto3.client('s3', region_name='eu-central-1') #specify aws region
#exclude credential signing, otherwise, without providind AWS credential you will get a "NoCredentialsError"
s3client.meta.events.register('choose-signer.s3.*', botocore.handlers.disable_signing) 
objects = s3client.list_objects(Bucket='vito.landcover.global')
for item in objects["Contents"]:
   print (item["key"])