擅长:python、mysql、java
<p>通过使用内置函数,以下代码应该更具可读性并具有良好的性能。你知道吗</p>
<pre class="lang-py prettyprint-override"><code>data = [ ...your data... ]
result = map(lambda first: # for each first-level entry
map(lambda second: # for each second-level entry within first
second[1], # return the second value
first
),
data
)
</code></pre>
<pre class="lang-py prettyprint-override"><code>[
[
2,
8
],
[
3,
1
],
[
9,
1
]
]
</code></pre>