擅长:python、mysql、java
<p>这似乎过于复杂了。尝试使用<a href="https://docs.python.org/3.1/tutorial/datastructures.html#list-comprehensions" rel="nofollow noreferrer">list comprehension</a>:</p>
<pre><code>a = [1, 2]
b = [[5,6], [7,8]]
c = [[x] + b[i] for i, x in enumerate(a)]
</code></pre>