是否可以为numpy数组切片的奇偶元素指定不同的值?你知道吗
代码示例将起作用:
a=np.zeros(100)
b=np.arange(10,50,10)
print(a)
[0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.
0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.
0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.
0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.
0. 0. 0. 0.]
a[b]=10
print(a)
[ 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 10. 0. 0. 0. 0. 0. 0. 0.
0. 0. 10. 0. 0. 0. 0. 0. 0. 0. 0. 0. 10. 0. 0. 0. 0. 0.
0. 0. 0. 0. 10. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.
0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.
0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.
0. 0. 0. 0. 0. 0. 0. 0. 0. 0.]
现在,我试图给片a[b]的奇偶元素分配不同的数字
a[b][::2] = 10
a[b][1::2] = -10
但这不起作用,一个初始的零数组不会修改。你知道吗
短期通知-实际上,b和a是动态生成的,因此我通常不知道它们的形状(a和b)以及哪些索引将在(b)之内
您应该直接索引
b
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