tensorflow_backend.py 文件源码

def unique(x, return_index=False):
    """
    Find the unique elements of an array.

    Returns the sorted unique elements of an array. There are three optional
    outputs in addition to the unique elements: the indices of the input array
    that give the unique values, the indices of the unique array that
    reconstruct the input array, and the number of times each unique value
    comes up in the input array.
    """
    y, indices = tensorflow.unique(x)

    if return_index:
        return y, indices
    else:
        return y