擅长:python、mysql、java
<p>我想这就是你想做的:</p>
<pre><code>for key, value in d.items():
yearly_sums = key, sum(value)
print('Yearly sum is:', yearly_sums[1])
Yearly sum is: 3
Yearly sum is: 7
Yearly sum is: 11
Yearly sum is: 15
Yearly sum is: 19
Yearly sum is: 23
Yearly sum is: 27
</code></pre>
<p>我希望这有帮助。你知道吗</p>