擅长:python、mysql、java
<p>假设:</p>
<pre><code>my_dict = {"States" : ["Boston Americans", "World Series Not Played in 1904", "New York",
"Chicago", "Chicago", "Chicago"
"Pittsburgh", "Philadelphia", "Philadelphia",
"Boston", "Philadelphia", "Boston", "Boston","Boston"]}
</code></pre>
<p>这样就可以做到:</p>
^{pr2}$