擅长:python、mysql、java
<p>您应该使用<a href="https://docs.python.org/3/library/functions.html#zip" rel="nofollow">zip</a>内置函数</p>
<pre><code>import collections
DictOutSum = collections.defaultdict(int)
DictOutCount = collections.defaultdict(int)
for l1, l2 in zip(L1, L2):
DictOutSum[l1] += l2
DictOutCount[l1] += 1
</code></pre>