tf.keras.utils.get_file
Downloads a file from a URL if it not already in the cache.
tf.keras.utils.get_file(
fname, origin, untar=False, md5_hash=None, file_hash=None,
cache_subdir='datasets', hash_algorithm='auto', extract=False,
archive_format='auto', cache_dir=None
)
By default the file at the url origin is downloaded to the cache_dir ~/.keras, placed in the cache_subdir datasets, and given the filename fname. The final location of a file example.txt would therefore be ~/.keras/datasets/example.txt.
Files in tar, tar.gz, tar.bz, and zip formats can also be extracted. Passing a hash will verify the file after download. The command line programs shasum and sha256sum can compute the hash.
Example:
path_to_downloaded_file = tf.keras.utils.get_file(
"flower_photos",
"https://storage.googleapis.com/download.tensorflow.org/example_images/flower_photos.tgz",
untar=True)
| Arguments | |
|---|---|
fname |
Name of the file. If an absolute path /path/to/file.txt is specified the file will be saved at that location. |
origin |
Original URL of the file. |
untar |
Deprecated in favor of extract argument. boolean, whether the file should be decompressed |
md5_hash |
Deprecated in favor of file_hash argument. md5 hash of the file for verification |
file_hash |
The expected hash string of the file after download. The sha256 and md5 hash algorithms are both supported. |
cache_subdir |
Subdirectory under the Keras cache dir where the file is saved. If an absolute path /path/to/folder is specified the file will be saved at that location. |
hash_algorithm |
Select the hash algorithm to verify the file. options are 'md5', 'sha256', and 'auto'. The default 'auto' detects the hash algorithm in use. |
extract |
True tries extracting the file as an Archive, like tar or zip. |
archive_format |
Archive format to try for extracting the file. Options are 'auto', 'tar', 'zip', and None. 'tar' includes tar, tar.gz, and tar.bz files. The default 'auto' corresponds to ['tar', 'zip']. None or an empty list will return no matches found. |
cache_dir |
Location to store cached files, when None it defaults to the default directory ~/.keras/. |
| Returns | |
|---|---|
| Path to the downloaded file |
© 2020 The TensorFlow Authors. All rights reserved.
Licensed under the Creative Commons Attribution License 3.0.
Code samples licensed under the Apache 2.0 License.
https://www.tensorflow.org/versions/r2.3/api_docs/python/tf/keras/utils/get_file