擅长:python、mysql、java
<p>既然已经得到了回答,我只需添加一个简单的演示:</p>
<pre><code>>>> a = [1, 2, 3, 4]
>>> b = a
>>> c = a[:]
>>> b[2] = 10
>>> c[3] = 20
>>> a
[1, 2, 10, 4]
>>> b
[1, 2, 10, 4]
>>> c
[1, 2, 3, 20]
</code></pre>