@ -133,7 +133,7 @@ def create_manifest(data_dir, manifest_path):
def prepare_dataset(url, md5sum, target_dir, manifest_path):
"""Download, unpack and create summmary manifest file.
"""
if not os.path.exists(os.path.join(target_dir)):
if not os.path.exists(os.path.join(target_dir, "LibriSpeech")):
# download
filepath = download(url, md5sum, target_dir)
# unpack