16 engineers on Hacker News describe using NumPy first-hand: 5 endorse it, 3 regret it, 0 are mixed.
“In our group, nobody has been using MATLAB for nearly a decade, and NumPy is well on its way out, too.”
regret · production · mgkuhn · 2025-12-16 · source ↗ · wrong label?“a Numpy-based solution, while great for a POC, quickly becomes a hassle when trying to append to it and scale it horizontally.”
regret · personal · lexandstuff · 2023-11-25 · source ↗ · wrong label?“A matrix A = [1,2;3, 4] became A = np.array([[1,2],[3,4]])”
regret · production · aborsy · 2023-01-27 · source ↗ · wrong label?“NumPy is insanely fast for most use cases, I've (grudgingly) come to the conclusion that if NumPy doesn't hack it then I should re-think the problem”
endorse · personal · jacquesm · 2022-12-27 · source ↗ · wrong label?“But I soon discovered the NLTK and then Numpy and so I started playing around in Python.”
endorse · production · guidoism · 2022-03-26 · source ↗ · wrong label?“we're now running entirely on structured numpy arrays.”
endorse · production · earthnail · 2017-06-08 · source ↗ · wrong label?“have since found it much much easier to just do everything in python and numpy.”
endorse · production · dwiel · 2012-12-18 · source ↗ · wrong label?“NumPy is awesome. Its a great way to prototype your ideas ... I have not yet run anything in production using NumPy though.”
endorse · personal · physcab · 2010-12-22 · source ↗ · wrong label?“We have about 100 deps that aside from numpy/pandas/pyarrow are pretty lightweight.”
neutral · production · alisonatwork · 2025-08-14 · source ↗ · wrong label?“I was the owner of numpy and scipy and frequently had to do megabuilds to ensure that upgrades didn't break important things”
neutral · production · dekhn · 2022-11-23 · source ↗ · wrong label?“Here's some Python code (using OpenCV & numpy) that is roughly equivalent to OP's imgdiff.”
neutral · production · drothlis · 2020-12-13 · source ↗ · wrong label?“I re-wrote the implementation in Python using numpy arrays”
neutral · production · olooney · 2018-11-28 · source ↗ · wrong label?“I've touched a lot of most other major areas, particularly in very low-level NumPy code, LLVM stuff with both Numba and llvmlite, pandas”
neutral · production · p4wnc6 · 2016-01-19 · source ↗ · wrong label?“With PTVS I'm looking at the docs online for numpy and matplotlib.”
neutral · personal · saboot · 2015-08-03 · source ↗ · wrong label?“for many of those algorithms, numpy actually performs identically to BLAS in C++.”
neutral · production · law · 2012-12-18 · source ↗ · wrong label?“I've been using NumPy for a while now, and I've literally never had a reason to use array.array”
neutral · personal · chimeracoder · 2011-12-20 · source ↗ · wrong label?