title: Download latest file in S3 bucket folder
body: <p>I am writing a Python script to download the latest file from inside an S3 Bucket's folder. I understand how to download the latest file object from my S3 Bucket, however the files I want to download are in a <strong>folder</strong> inside the bucket. I am at a complete loss on how to do it and where it may be added within my code. I tried putting the path at the end of my bucket link but that did not seem to work.</p>
  
  <pre><code># AWS Credentials 
  client = boto3.client('athena',aws_access_key_id=aws_server_access_key, aws_secret_access_key=aws_server_secret_key,region_name='us-east-1')
  ba = boto3.client('s3',aws_access_key_id=aws_server_access_key, aws_secret_access_key=aws_server_secret_key,region_name='us-east-1')
  # Get latest modified file
  get_last_modified = lambda obj: int(obj['LastModified'].strftime('%s'))
  
  objs = ba.list_objects_v2(Bucket=BUCKET_NAME)['Contents']
  last_added = [obj['Key'] for obj in sorted(objs, key=get_last_modified)][0]
  
  s3 = boto3.resource('s3', aws_access_key_id= aws_server_access_key,aws_secret_access_key= aws_server_secret_key)
  try:
      s3.Bucket(BUCKET_NAME).download_file(last_added, last_added)
  except botocore.exceptions.ClientError as e:
      if e.response['Error']['Code'] == "404":
          print("The object does not exist.")
      else:
          raise
  </code></pre>