擅长:python、mysql、java
<p>你需要建立一个迭代。在</p>
<pre><code>>>> listA = [10,20,30,40,50]
>>> for index, item in enumerate(listA):
... print 'I am at index {} and the current item is {}'.format(index, item)
...
I am at index 0 and the current item is 10
I am at index 1 and the current item is 20
I am at index 2 and the current item is 30
I am at index 3 and the current item is 40
I am at index 4 and the current item is 50
</code></pre>
<p>现在你想在这个循环中添加一些额外的逻辑:</p>
^{pr2}$