def upload(lambda_src, target_bucket, acl, cacheControl):
  for folder, subs, files in os.walk(lambda_src):
    for filename in files:
        source_file_path = os.path.join(folder, filename)
        destination_s3_key = os.path.relpath(source_file_path, lambda_src)
        contentType, encoding = mimetypes.guess_type(source_file_path)
        upload_file(source_file_path, target_bucket,
                    destination_s3_key, s3, acl, cacheControl, contentType)