擅长:python、mysql、java
<p>你真的应该开始掌握<a href="https://docs.python.org/2/library/stdtypes.html#str.format" rel="nofollow">^{<cd1>}</a>:</p>
<pre><code>>>> print("Your answer: {0}".format("".join([k * v for k, v
in dict1.items()])))
Your answer: acccbb
</code></pre>