擅长:python、mysql、java
<p>是的,或者您可以使用<code>collections Counter</code>:</p>
<pre><code>from collections import Counter
frequencies = Counter(text)
</code></pre>
<p>对于打印,您必须按排序顺序遍历键:</p>
<pre><code>def print_output(frequencies):
for key in sorted(frequencies.keys()):
print(key, frequencies[key])
</code></pre>