tensorflow_backend.py 文件源码

def cumsum(x, axis=0):
    """Cumulative sum of the values in a tensor, alongside the specified axis.

    # Arguments
        x: A tensor or variable.
        axis: An integer, the axis to compute the sum.

    # Returns
        A tensor of the cumulative sum of values of `x` along `axis`.
    """
    axis = _normalize_axis(axis, ndim(x))
    return tf.cumsum(x, axis=axis)