old_contents: import argparse
  import sys, re
  
  import boto3
  import botocore
  from boto3.s3.transfer import TransferConfig
  from z3.config import get_config
  
  MB = 1024 ** 2
  def main():
      cfg = get_config()
      parser = argparse.ArgumentParser(
          description='Read a key from s3 and write the content to stdout',
      )
      parser.add_argument('name', help='name of S3 key')
      args = parser.parse_args()
      config = TransferConfig(max_concurrency=int(cfg['CONCURRENCY']), multipart_chunksize=int(re.sub('M', '', cfg['CHUNK_SIZE'])) * MB)
      if 'S3_KEY_ID' in cfg:
          s3 = boto3.client('s3'), aws_access_key_id=cfg['S3_KEY_ID'], aws_secret_access_key=cfg['S3_SECRET'])
      else:
          s3 = boto3.client('s3')
      try:
          s3.download_fileobj(cfg['BUCKET'], args.name, sys.stdout, Config = config)
      except botocore.exceptions.ClientError as e:
          if e.response['Error']['Code'] == "404":
              print("The object does not exist.")
          else:
              raise
  
  if __name__ == '__main__':
      main()
  
new_contents: import argparse
  import sys, re
  
  import boto3
  import botocore
  from boto3.s3.transfer import TransferConfig
  from z3.config import get_config
  
  MB = 1024 ** 2
  def main():
      cfg = get_config()
      parser = argparse.ArgumentParser(
          description='Read a key from s3 and write the content to stdout',
      )
      parser.add_argument('name', help='name of S3 key')
      args = parser.parse_args()
      config = TransferConfig(max_concurrency=int(cfg['CONCURRENCY']), multipart_chunksize=int(re.sub('M', '', cfg['CHUNK_SIZE'])) * MB)
      if 'S3_KEY_ID' in cfg:
          s3 = boto3.client('s3', aws_access_key_id=cfg['S3_KEY_ID'], aws_secret_access_key=cfg['S3_SECRET'])
      else:
          s3 = boto3.client('s3')
      try:
          s3.download_fileobj(cfg['BUCKET'], args.name, sys.stdout, Config = config)
      except botocore.exceptions.ClientError as e:
          if e.response['Error']['Code'] == "404":
              print("The object does not exist.")
          else:
              raise
  
  if __name__ == '__main__':
      main()
  
subject: fix syntax error