擅长:python、mysql、java
<p>使用列表理解和<code>dict()</code>。在</p>
<p><strong>演示:</strong></p>
<pre><code>student={"aman":{"math":90,
"english":92,
"science":99},
"verma":{"math":80,
"english":87,
"science":70}}
print([sum(student[i].values()) for i in student])
print(dict((i, sum(student[i].values())) for i in student))
</code></pre>
<p><strong>输出:</strong></p>
^{pr2}$