tf.keras.backend.flatten(x)
Defined in tensorflow/python/keras/_impl/keras/backend.py.
Flatten a tensor.
x: A tensor or variable.A tensor, reshaped into 1-D
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Licensed under the Creative Commons Attribution License 3.0.
Code samples licensed under the Apache 2.0 License.
    https://www.tensorflow.org/api_docs/python/tf/keras/backend/flatten