| # |
| # Licensed to the Apache Software Foundation (ASF) under one |
| # or more contributor license agreements. See the NOTICE file |
| # distributed with this work for additional information |
| # regarding copyright ownership. The ASF licenses this file |
| # to you under the Apache License, Version 2.0 (the |
| # "License"); you may not use this file except in compliance |
| # with the License. You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, |
| # software distributed under the License is distributed on an |
| # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| # KIND, either express or implied. See the License for the |
| # specific language governing permissions and limitations |
| # under the License. |
| # |
| |
| import os |
| import urllib.request |
| |
| |
| def check_exist_or_download(url): |
| |
| download_dir = '/tmp/' |
| name = url.rsplit('/', 1)[-1] |
| filename = os.path.join(download_dir, name) |
| |
| if not os.path.isfile(filename): |
| print("Downloading %s" % url) |
| urllib.request.urlretrieve(url, filename) |
| else: |
| print("Already Downloaded: %s" % url) |
| |
| |
| if __name__ == '__main__': |
| |
| #url of the mnist dataset |
| train_x_url = 'http://yann.lecun.com/exdb/mnist/train-images-idx3-ubyte.gz' |
| train_y_url = 'http://yann.lecun.com/exdb/mnist/train-labels-idx1-ubyte.gz' |
| valid_x_url = 'http://yann.lecun.com/exdb/mnist/t10k-images-idx3-ubyte.gz' |
| valid_y_url = 'http://yann.lecun.com/exdb/mnist/t10k-labels-idx1-ubyte.gz' |
| |
| #download the mnist dataset |
| check_exist_or_download(train_x_url) |
| check_exist_or_download(train_y_url) |
| check_exist_or_download(valid_x_url) |
| check_exist_or_download(valid_y_url) |