擅长:python、mysql、java
<p>由于您的值是<code>set</code>对象,请使用<code>str</code>将它们转换为字符串,然后可以使用<code>upper</code>方法:</p>
<pre><code>>>> {key: str(value).upper() for key, value in strings.items()}
{'1234': "SET(['A'])", '2': "SET(['AS'])", '5': "SET(['CAR'])", '4': "SET(['BAT'])", '7': "SET(['PYTHON'])", '6': "SET(['DOVE'])"}
</code></pre>