擅长:python、mysql、java
<p>使函数返回字典而不是仅仅打印它:</p>
<pre><code>def tree_count(arr):
feat = ['2','2','2','2','0']
dictionary = dict(zip(arr, feat))
dictionary = [k for k in dictionary if dictionary[k] == '2']
return dictionary
</code></pre>
<p>例如</p>
<pre><code>$ results = tree_count(['C','D','E','I','M'])
$ print(results)
['I', 'C', 'D', 'E']
</code></pre>
<p>漂亮的印刷非常简单:</p>
<pre><code>$ print("\n".join(results))
I
C
D
E
</code></pre>
<p>。。。或者如果你只是想要<code>,</code>:</p>
<pre><code>$ print(", ".join(results))
I, C, D, E
</code></pre>