擅长:python、mysql、java
<pre><code>def add(seq, n):
return [sum(seq[i:i + n]) for i in range(0, len(seq), n)]
print(add([1, 2, 3, 4, 5, 6], 3))
print(add([1, 2, 3, 4, 5, 6, 7], 3))
print(add([1, 2, 3, 4, 5, 6, 7, 8], 3))
print(add([1, 2, 3, 4, 5, 6, 7], 4))
</code></pre>