Three Elegant Python Tricks to Sum Columns in a 2D List

This article explains a Python fan's question about summing each column of a two‑dimensional list and presents three concise solutions—including list unpacking with zip, NumPy aggregation, and a functional reduce approach—complete with code snippets and explanations.

Pythonlist sumlist-comprehension

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Three Elegant Python Tricks to Sum Columns in a 2D List

Python Crawling & Data Mining

Apr 25, 2022 · Fundamentals

Three Elegant Python Tricks to Sum Columns in a 2D List

This article presents three concise Python solutions—including list unpacking, NumPy aggregation, and a functional‑programming approach—to efficiently sum corresponding elements across sublists in a two‑dimensional list, complete with code examples and visual output.

Code ExamplesNumPyfunctional programming

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