numpy 返回函数的上三角矩阵实例

numpy 返回函数的上三角矩阵 np.triu() matrix2=np.triu(matrix1) numpy.triu(m, k=0)[source] Upper triangle of an array. Return a copy of a matrix with the elements below the k-th diagonal zeroed. np.triu([[1,2,3],[4,5,6],[7,8,9],[10,11,12]], -1) array([[ 1, 2, 3], [ 4, 5, 6], [ 0, 8, 9], [ 0, 0, 12]]) 以上这篇num