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V2EX  ›  kaitolucifer  ›  全部回复第 1 页 / 共 1 页
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2020 年 10 月 22 日
回复了 JCZ2MkKb5S8ZX9pq 创建的主题 › Python › Python 多个列表相加怎么写
The issue of quadratic performance of sum(sequences, null_seq) is known, which is why the doc says that sum() is for numbers and recommends .join for strings and itertools.chain for other sequences.

上面那个 sum trick 貌似很慢？
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