擅长:python、mysql、java
<pre><code>list = [] #define list here
dict_out = {} #output dictionary
def get_sum(name):
summed = 0
for value in list:
if value[-1] == name:
summed += int(value[2])
return summed
for value in list:
if value[-1] not in dict_out:
dict_out[value[-1]] = get_sum(value[-1])[:4]
</code></pre>