擅长:python、mysql、java
<pre><code>>>> assetTuples=[('asset1',11),('asset1',25),('asset2',11),('asset3',99)]
>>> dic=defaultdict(list)
>>> for k,v in assetTuples:
... if dic[k]==[]:
... dic[k]=[v]
... else:
... dic[k][0]+=v
...
>>> dic
defaultdict(<type 'list'>, {'asset2': [11], 'asset3': [99], 'asset1': [36]})
</code></pre>