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Returns the number of axes in a tensor, as an integer.
Aliases:
tf.keras.backend.ndim(x)
Arguments:
x: Tensor or variable.
Returns:
Integer (scalar), number of axes.
Examples:
>>> from keras import backend as K
>>> input = K.placeholder(shape=(2, 4, 5))
>>> val = np.array([[1, 2], [3, 4]])
>>> kvar = K.variable(value=val)
>>> K.ndim(input)
3
>>> K.ndim(kvar)
2