old_contents: """
  These functions are written assuming the under a moto call stack.
  TODO add check is a fake bucket?
  """
  import boto3
  
  
  def pre_load_s3_data(bucket_name, prefix, region='us-east-1'):
      s3 = boto3.client('s3', region_name=region)
      res = s3.create_bucket(Bucket=bucket_name)
  
      default_kwargs = {"Body": b"Fake data for testing.", "Bucket": bucket_name}
      s3.put_object(Key=f"{prefix}/readme.txt", **default_kwargs)
      s3.put_object(Key=f"{prefix}/notes.md", **default_kwargs)
  
      # load items, 3 directories
      for i, _ in enumerate(range(500)):
          res = s3.put_object(Key=f"{prefix}/images/myimage{i}.tif",
                              **default_kwargs)
  
      for i, _ in enumerate(range(400)):
          s3.put_object(
              Key=f"{prefix}/scripts/myscripts{i}.py",
              **default_kwargs
          )
  
      for i, _ in enumerate(range(110)):
         s3.put_object(
             Key=f"{prefix}/scripts/subdir/otherscripts{i}.sh",
             **default_kwargs
         )
  
new_contents: """
  These functions are written assuming the under a moto call stack.
  TODO add check is a fake bucket?
  """
  import boto3
  
  
  def pre_load_s3_data(bucket_name, prefix, region='us-east-1'):
      s3 = boto3.client('s3', region_name=region)
      res = s3.create_bucket(Bucket=bucket_name)
  
      default_kwargs = {"Body": b"Fake data for testing.", "Bucket": bucket_name}
      s3.put_object(Key="{}/readme.txt".format(prefix), **default_kwargs)
      s3.put_object(Key="{}/notes.md".format(prefix), **default_kwargs)
  
      # load items, 3 directories
      for i, _ in enumerate(range(500)):
          res = s3.put_object(Key="{}/images/myimage{i}.tif".format(prefix),
                              **default_kwargs)
  
      for i, _ in enumerate(range(400)):
          s3.put_object(Key="{}/scripts/myscripts{i}.py".format(prefix),
                        **default_kwargs)
  
      for i, _ in enumerate(range(110)):
          s3.put_object(
              Key="{}/scripts/subdir/otherscripts{i}.sh".format(prefix),
              **default_kwargs)
  
subject: Fix string using py3 only feature.