chainer.dataset.cached_download¶

chainer.dataset.cached_download(url)[source]¶

Downloads a file and caches it.

It downloads a file from the URL if there is no corresponding cache. After the download, this function stores a cache to the directory under the dataset root (see set_dataset_root()). If there is already a cache for the given URL, it just returns the path to the cache without downloading the same file.

Parameters:	url (str) – URL to download from.
Returns:	Path to the downloaded file.
Return type:	str