title: check if a directory or sub directory exists in a bucket in s3 using boto3
body: <p>I have a s3 structure like <code>s3://my-bucket/data/2020/03/23/01/data.csv</code>
  I want to check if <code>s3://my-bucket/data/2020/03/23</code> exist. </p>
  
  <p>I can check if the CSV file exist but I cant use that because file name might change so I want to check if the folder exists. </p>