49 lines
1.5 KiB
Python
49 lines
1.5 KiB
Python
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# Copyright 2016 Google Inc. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Utility functions for working with TensorFlow."""
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import ast
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class HParams(object):
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"""Creates an object for passing around hyperparameter values.
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Use the parse method to overwrite the default hyperparameters with values
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passed in as a string representation of a Python dictionary mapping
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hyperparameters to values.
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Ex.
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hparams = magenta.common.HParams(batch_size=128, hidden_size=256)
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hparams.parse('{"hidden_size":512}')
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assert hparams.batch_size == 128
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assert hparams.hidden_size == 512
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"""
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def __init__(self, **init_hparams):
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object.__setattr__(self, 'keyvals', init_hparams)
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def __getattr__(self, key):
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return self.keyvals.get(key)
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def __setattr__(self, key, value):
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"""Returns None if key does not exist."""
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self.keyvals[key] = value
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def parse(self, string):
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new_hparams = ast.literal_eval(string)
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return HParams(**dict(self.keyvals, **new_hparams))
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def values(self):
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return self.keyvals
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