Get keys recursively from S3

s3get.py

#!/usr/bin/env python

import boto
import os
import sys

bucket_name = str(sys.argv[1])
dirname = str(sys.argv[2])

def files(keys):
  return (key for key in keys if not key.name.endswith('/'))

s3 = boto.connect_s3(AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY)
bucket = s3.get_bucket(bucket_name)
keys = bucket.list(dirname)
for key in files(keys):
  path, file = os.path.split(key.name)
  print('Downloading {0}'.format((key.name)))
  if not os.path.exists(path):
    os.makedirs(path)
  key.get_contents_to_filename(key.name)