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TensorFlow 1 version View source on GitHub

Selects x in test phase, and alt otherwise.

    x, alt, training=None

Note that alt should have the same shape as x.


  • x: What to return in test phase (tensor or callable that returns a tensor).
  • alt: What to return otherwise (tensor or callable that returns a tensor).
  • training: Optional scalar tensor (or Python boolean, or Python integer) specifying the learning phase.


Either x or alt based on K.learning_phase.