擅长:python、mysql、java
<p>对此,可以使用切片语法[start:stop:step]</p>
<pre><code>>>> tup = (1, 2, 3, 4, 5, 6, 7, 8)
>>> sum(tup[0::2]) # sum every second element, starting index 0
16
>>> sum(tup[1::2]) # sum every second element, starting index 1
20
</code></pre>