擅长:python、mysql、java
<p>您可以使用字典理解:</p>
<pre><code>result = {'kid': ['$6.00', '$159.00', '$10.00'], 'entertainment': ['$2.40', '$3.10', '$30.37', '$40.15'], 'food': ['$5.04', '$8.00', '$160.15']}
final_result = {a:"$ {}".format(round(sum(float(i[1:]) for i in b), 2)) for a, b in result.items()}
</code></pre>
<p>输出:</p>
^{pr2}$