擅长:python、mysql、java
<p>我是这样做的:</p>
<pre><code>my_dict = [{2:1, 3:1, 5:2}, {3:4, 6:4, 2:3}, {2:5, 3:6}]
# Finds the common keys
common_keys = set.intersection(*map(set, my_dict))
# Makes a new dict with only those keys and sums the values into another dict
summed_dict = {key: sum(d[key] for d in my_dict) for key in common_keys}
</code></pre>
<p>或者是疯狂的一句话:</p>
^{pr2}$