text: import json
  import boto3
  import os
  from datetime import datetime
  
  s3_resource = boto3.resource('s3')
  
  def lambda_handler(event, context):
      bucket_name = "boannews"
  
      bucket_object = s3_resource.Bucket(bucket_name)
  
      for obj in bucket_object.objects.all():
          print(obj.key)