设置两个数组相等 [英] Setting two arrays equal

问题描述

array1=[0,1,2]
array2=array1
array2[0]=234234
print array1

输出:

[234234, 1, 2]

为什么python会改变'array1'?不应该只是改变array2吗?更改array2时如何防止python更改array1?

Why does python change 'array1'? Shouldn't it just change array2? How can I prevent python from changing array1 when I change array2?

推荐答案

array1 和 array2 是同一个对象.这就是为什么改变一个改变另一个.如果你想复制对象，这里有一种方法:

array1 and array2 are the same object. That's why changing either changes the other. If you want to copy the object, here's one way to do it:

array2 = array1[:]

请参阅更多相关信息.

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