# tf.keras.backend.eval

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| [![](https://www.tensorflow.org/images/tf_logo_32px.png) TensorFlow 2 version](https://www.tensorflow.org/api_docs/python/tf/keras/backend/eval) | [![](https://www.tensorflow.org/images/GitHub-Mark-32px.png) View source on GitHub](https://github.com/tensorflow/tensorflow/blob/v1.15.0/tensorflow/python/keras/backend.py#L1246-L1265) |

Evaluates the value of a variable.

#### View aliases


**Compat aliases for migration**

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

[`tf.compat.v1.keras.backend.eval`](https://www.tensorflow.org/api_docs/python/tf/keras/backend/eval), \`tf.compat.v2.keras.backend.eval\`

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    tf.keras.backend.eval(
        x
    )

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| ## Arguments ||
|---|---|
| `x` | A variable. |

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| ## Returns ||
|---|---|
| A Numpy array. ||

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#### Examples:

    from keras import backend as K
    kvar = K.variable(np.array([[1, 2], [3, 4]]), dtype='float32')
    K.eval(kvar)
    array([[ 1.,  2.],
           [ 3.,  4.]], dtype=float32)