擅长:python、mysql、java
<p>考虑:</p>
<pre><code>>>> line = [(' ', 3), ('#', 5), (' ', 3), ('#', 5)]
>>> strs = [k * v for k, v in line]
</code></pre>
<p>然后:</p>
<pre><code>>>> strs
[' ', '#####', ' ', '#####']
</code></pre>
<p>此外:</p>
<pre><code>>>> ''.join(strs)
' ##### #####'
</code></pre>