class tf.contrib.learn.ModeKeysSee the guide: Learn (contrib) > Estimators
Standard names for model modes.
The following standard keys are defined:
TRAIN: training mode.EVAL: evaluation mode.INFER: inference mode.EVALINFERTRAIN__init__Defined in tensorflow/contrib/learn/python/learn/estimators/model_fn.py.
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Code samples licensed under the Apache 2.0 License.
https://www.tensorflow.org/api_docs/python/tf/contrib/learn/ModeKeys