old_contents: import sys
  import boto3
  import botocore
  
  BUCKET_NAME = 'mitLookit'
  
  def get_all_study_attachments(study_uuid):
      """
      Get all video responses to a study by fetching all objects in the bucket with
      key name videoStream_<study_uuid>
      """
      s3 = boto3.resource('s3')
      bucket = s3.Bucket(BUCKET_NAME)
      return bucket.objects.filter(Prefix=f'videoStream_{study_uuid}')
  
  def get_download_url(video_key):
      """
      Generate a presigned url for the video that expires in 60 seconds.
      """
      s3Client = boto3.client('s3')
      return s3Client.generate_presigned_url('get_object', Params = {'Bucket': BUCKET_NAME, 'Key': video_key}, ExpiresIn = 60)
  
  if __name__ == '__main__':
      study_uuid = sys.argv[1]
      get_study_keys(study_uuid)
  
new_contents: import sys
  import boto3
  import botocore
  
  BUCKET_NAME = 'mitLookit'
  
  def get_all_study_attachments(study_uuid):
      """
      Get all video responses to a study by fetching all objects in the bucket with
      key name videoStream_<study_uuid>
      """
      s3 = boto3.resource('s3')
      bucket = s3.Bucket(BUCKET_NAME)
      return bucket.objects.filter(Prefix=f'videoStream_{study_uuid}')
  
  def get_download_url(video_key):
      """
      Generate a presigned url for the video that expires in 60 seconds.
      """
      s3Client = boto3.client('s3')
      return s3Client.generate_presigned_url('get_object', Params = {'Bucket': BUCKET_NAME, 'Key': video_key}, ExpiresIn = 60)
  
subject: Remove unnecessary pieces from get_study_attachments.