擅长:python、mysql、java
<p>您可以在此处使用<a href="http://docs.python.org/2/library/collections.html#collections.defaultdict" rel="nofollow">^{<cd1>}</a>:</p>
<pre><code>>>> from collections import defaultdict
>>> dic=defaultdict(list)
>>> dictlist=[{'a':['e','f','g'],'b':['h','i','k'],'c':['u','v','w']},{'a':['t','u']}]
>>> for x in dictlist:
for k,v in x.items():
dic[k].extend(v)
>>> dic
defaultdict(<type 'list'>, {'a': ['e', 'f', 'g', 't', 'u'], 'c': ['u', 'v', 'w'], 'b': ['h', 'i', 'k']})
</code></pre>
<p>或使用<code>dict.setdefault</code>:</p>
<pre><code>>>> dic={}
>>> for x in dictlist:
for k,v in x.items():
dic.setdefault(k,[]).extend(v)
>>> dic
{'a': ['e', 'f', 'g', 't', 'u'], 'b': ['h', 'i', 'k'], 'c': ['u', 'v', 'w']}
</code></pre>