擅长:python、mysql、java
<p>这是相当冗长的,但我觉得它必须是,<em>可理解\可读的</em>:</p>
<pre><code>mylist = [[16, 'August', 2014, 540, 10], [16, 'Iunie', 2014, 100, 20], [23, 'August', 2014, 540, 10], [23, 'Septembrie', 2016, 540, 30], [21, 'August', 2014, 422, 30]]
g = {}
for x, *y in mylist:
g.setdefault(x, []).append(y)
def formater(obj, a_list):
if len(a_list) == 1:
return [obj] + a_list[0]
else:
conc = ', '.join('{} {}'.format(sub[0], sub[1]) for sub in a_list)
return [obj, conc, a_list[0][2], sum(sub[3] for sub in a_list)]
manipulate = [formater(k, v) for k, v in g.items()]
print(manipulate) # [[16, 'August 2014, Iunie 2014', 540, 30], [21, 'August', 2014, 422, 30], [23, 'August 2014, Septembrie 2016', 540, 40]]
</code></pre>