Evaluates the value of a variable. Arguments: x: A variable. Returns: A Numpy array. Examples: ```python >>> 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.]], dtyp
(x)
source not stored for this graph (policy: none)