我都是 from functools import reduce from operator import add reduce(add, [[1, 2], [3, 4], [5]]) 绝不手写逻辑，100%掉包
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我都是 from functools import reduce from operator import add reduce(add, [[1, 2], [3, 4], [5]]) 绝不手写逻辑，100%掉包