| # 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. |
| |
| |
| """Minimal example of how to read samples from a dataset generated by `generate_external_dataset_carbon.py` |
| using tensorflow, using make_batch_carbon_reader() instead of make_carbon_reader()""" |
| |
| from __future__ import print_function |
| |
| import argparse |
| import jnius_config |
| |
| import tensorflow as tf |
| from pycarbon.tests import DEFAULT_CARBONSDK_PATH |
| |
| from pycarbon.core.carbon_tf_utils import tf_tensors, make_pycarbon_dataset |
| |
| from pycarbon.core.carbon_reader import make_batch_carbon_reader |
| |
| from pycarbon.reader import make_reader |
| from pycarbon.reader import make_tensor, make_dataset |
| |
| def tensorflow_hello_world(dataset_url='file:///tmp/carbon_external_dataset'): |
| # Example: tf_tensors will return tensors with dataset data |
| with make_reader(dataset_url) as reader: |
| tensor = tf_tensors(reader) |
| with tf.Session() as sess: |
| # Because we are using make_reader(), each read returns a batch of rows instead of a single row |
| batched_sample = sess.run(tensor) |
| print("id batch: {0}".format(batched_sample.id)) |
| |
| # Example: use tf.data.Dataset API |
| with make_reader(dataset_url) as reader: |
| dataset = make_dataset(reader) |
| iterator = dataset.make_one_shot_iterator() |
| tensor = iterator.get_next() |
| with tf.Session() as sess: |
| batched_sample = sess.run(tensor) |
| print("id batch: {0}".format(batched_sample.id)) |
| |
| if __name__ == '__main__': |
| parser = argparse.ArgumentParser(description='Tensorflow hello world') |
| parser.add_argument('-c', '--carbon-sdk-path', type=str, default=DEFAULT_CARBONSDK_PATH, |
| help='carbon sdk path') |
| |
| args = parser.parse_args() |
| |
| jnius_config.set_classpath(args.carbon_sdk_path) |
| |
| tensorflow_hello_world() |