broadcast是numpy中array的一个重要操作。首先,broadcast只适用于加减。...举例说明:a = [ [0,1,2,3], [4,5,6,7] ]b = [1,2,3,4]a + b = [ [1,3,5,7], [5,7,9,11] ] 或可自己运行下面代码观察:import numpy...6] [ 6 8]] [[ 8 10] [10 12]]]-----------------------------------还有下面一种特殊情况,即扩展低维度为 1 的情况下:import numpy