z.reshape(-1, 2) array([[ 1, 2], [ 3, 4], [ 5, 6], [ 7, 8], [ 9, 10], [11, 12]]) 现在试图将列保持为未知。新形状为 (1,-1)。即,行为 1,列未知。我们得到结果新形状为 (1, 12) z.reshape(1,-1) array([[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]]...