# tf.keras.activations.get

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| [![](https://www.tensorflow.org/images/GitHub-Mark-32px.png) View source on GitHub](https://github.com/keras-team/keras/tree/v2.13.1/keras/activations.py#L667-L710) |

Returns function.

#### View aliases


**Compat aliases for migration**

See
[Migration guide](https://www.tensorflow.org/guide/migrate) for
more details.

\`tf.compat.v1.keras.activations.get\`

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    tf.keras.activations.get(
        identifier
    )

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| ## Args ||
|---|---|
| `identifier` | Function or string |

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| ## Returns ||
|---|---|
| Function corresponding to the input string or input function. ||

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#### Example:

    tf.keras.activations.get('softmax')
     <function softmax at 0x1222a3d90>
    tf.keras.activations.get(tf.keras.activations.softmax)
     <function softmax at 0x1222a3d90>
    tf.keras.activations.get(None)
     <function linear at 0x1239596a8>
    tf.keras.activations.get(abs)
     <built-in function abs>
    tf.keras.activations.get('abcd')
    Traceback (most recent call last):

    ValueError: Unknown activation function:abcd

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| ## Raises ||
|---|---|
| `ValueError` | Input is an unknown function or string, i.e., the input does not denote any defined function. |

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