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numpy/numpy

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The fundamental package for scientific computing with Python.

76 mentions on Hacker News by 71 people: 16 stories, 60 comments · first 2013-12-23 · latest 2026-10-16

Mentions per year 76 mentions · busiest year 2024 (13)
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  1. At this point it has been translated to C and now they patch the C directly but: https://github.com/numpy/numpy/tree/main/numpy/linalg/lapack...
    comment by retrac · 2026-10-16 · in Celebrating 70 Years of Fortran
  2. …speedup (488ms down to 9.2ms) of bytes substring search generated with Claude Code - numpy/numpy: https://github.com/numpy/numpy/pull/31573 - ~21x speedup of Python datetime → datetime64 conversion, with Claude Code used for profiling and…
    comment by simonw · 2026-08-09 · in Is it all just vapourware?
  3. Because PyPy seems to be defunct. It hasn't updated for quite a while. See https://github.com/numpy/numpy/issues/30416 for example. It's not being updated for compatibility with new versions of Python.
    comment by JoshTriplett · 2026-03-17 · in Python 3.15's JIT is now back on track
  4. …definitely has _requirements_, even if they're not represented as such in the python graph. e.g. https://github.com/numpy/numpy/blob/main/.gitmodules (some source code requirements) https://github.com/numpy/numpy/tree/main/requirements…
    comment by noitpmeder · 2025-11-26 · in Python is not a great language for data science
  5. …just look at the static typing annotations for this function, which has 6 overloads for reshape ( https://github.com/numpy/numpy/blob/0066c73f573daafa01cbb975... ). I don't see a lot of evidence in either of these that the dynamic typing…
    comment by AlotOfReading · 2025-10-19 · in What Dynamic Typing Is For
  6. …second - the ‘CanIndex’ and ‘SupportsIndex’ from the looks are just “int”. The PR for the change is https://github.com/numpy/numpy/pull/28913 - The details of files changed[0] shows the change was made in 'numpy/__init__.pyi'. Looking at…
    comment by CaliforniaKarl · 2025-10-15 · in Bringing NumPy's type-completeness score to nearly 90%
  7. ▲ 2
    Release v2.3.0 (June 7, 2025) · NumPy/NumPy
    story by rbanffy · 2025-06-18 · 0 comments
  8. …that it was caused by numpy or Python, but eventually all the likely scenarios got ruled out... [0] https://github.com/numpy/numpy/issues/10215
    comment by CGamesPlay · 2025-02-24 · in It is not a compiler error (2017)
  9. …exactly how the per-array descriptor works. Ultimately it's powered by a hook in the DType API: https://github.com/numpy/numpy/pull/24988 . There is only one spot in NumPy where array buffers are allocated, so we hooked there and made sure…
    comment by ngoldbaum · 2024-10-23 · in My NumPy year: Creating a DType for the next generation of scientific computing
  10. https://github.com/numpy/numpy/issues/26510#issuecomment-229... And now that I look at that again I realize I forgot to finish that up!
    comment by ngoldbaum · 2024-10-02 · in The Fastest Mutexes
  11. …Though, I was searching for an example of this as I know NumPy did it until they undid it: https://github.com/numpy/numpy/pull/24357
    comment by nick238 · 2024-08-01 · in The Trouble with __all__
  12. …which give different results. >Hyperbolic tan is in the list of recommended functions, and yet: https://github.com/numpy/numpy/issues/9187 Any evidence whatsoever that this is caused by two differing implementations of tanh, which BOTH…
    comment by constantcrying · 2024-07-15 · in Pi calculation world record with over 202T digits
  13. …all supported arithmetic formats. Hyperbolic tan is in the list of recommended functions, and yet: https://github.com/numpy/numpy/issues/9187
    comment by Extigy · 2024-07-15 · in Pi calculation world record with over 202T digits
  14. Doesn’t numpy have runtime SIMD dispatching and whatnot based on CPU flags? E.g. https://github.com/numpy/numpy/blob/main/numpy/_core/src/com...
    comment by stingraycharles · 2024-07-04 · in Beating NumPy matrix multiplication in 150 lines of C
  15. ▲ 3
    NumPy 2.0.0 release – first major release since 2006
    story by godber · 2024-06-17 · 0 comments
  16. Looks like that might get reverted [0]. [0] https://github.com/numpy/numpy/pull/25955
    comment by haiguise · 2024-06-17 · in NumPy 2.0
  17. ▲ 1
    NumPy 2.0.0 Release Notes
    story by stanislavb · 2024-06-17 · 0 comments
  18. …of: > It is the result of X months of development since the last feature release by Y contributors https://github.com/numpy/numpy/releases/tag/v2.0.0
    comment by wartijn_ · 2024-06-17 · in NumPy 2.0
  19. ▲ 8
    NumPy 2.0.0
    story by wishawa · 2024-06-16 · 0 comments
  20. Numpy also uses blocked pairwise summation, with a block size of 128: https://github.com/numpy/numpy/blob/a6e9dc7152098182b45ecd6e... .
    comment by orlp · 2024-05-26 · in Taming floating-point sums
  21. ▲ 4
    NumPy 2.0.0 Beta1
    story by marcin_konow · 2024-03-18 · 0 comments
  22. ▲ 6
    NumPy 2.0 Development Status
    story by _1 · 2023-10-15 · 0 comments
  23. …in 2018, while PCG64 DXSM was made in 2019 and appears to have addressed various shortcomings. https://github.com/numpy/numpy/issues/13635#issuecomment-506...
    comment by omoikane · 2023-06-23 · in The PCG64 DXSM random number generator
  24. …quality open source version of this, one place that could benefit is numpy's searchsorted function https://github.com/numpy/numpy/blame/main/numpy/core/src/npy...
    comment by shoo · 2023-04-30 · in Beating Bisect with Branchless Binary Search
  25. …or Sphinx ever had a good solution). And numpy actually has a bunch of generators for that e.g. https://github.com/numpy/numpy/blob/45bc13e6d922690eea43b9d8... handles filling in the common bits of documentation for the ufuncs.
    comment by masklinn · 2023-01-05 · in Microfeatures I'd like to see in more languages
  26. Definitely. However, the equivalent for the array multiplication in numpy looks like this: https://github.com/numpy/numpy/blob/22e683d84f2584a6f9a57b2c... + https://github.com/numpy/numpy/blob/22e683d84f2584a6f9a57b2c... To know what they…
    comment by jeroenhd · 2022-12-27 · in Extending Python with Rust
  27. worth a look https://github.com/numpy/numpy/issues/14412
    comment by Kalanos · 2022-12-19 · in NumPy 1.24
  28. ▲ 108
    NumPy 1.24
    story by drunkendog · 2022-12-19 · 32 comments
  29. See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=35488/ https://github.com/numpy/numpy/issues/15237 . I slightly misremembered what was happening. It's that on 32 bit systems, it wil replace 64 bit math with 80 bit math and double rounding…
    comment by adgjlsfhk1 · 2022-09-28 · in Posits, a New Kind of Number, Improves the Math of AI
  30. …slow on modern hardware and so that everyone's existing deployed numpy test suite passes before https://github.com/numpy/numpy/issues/22098 is widely available. https://github.com/python/cpython/blob/511ca9452033ef95bc7d7...
    comment by js2 · 2022-09-07 · in Prevent DoS by large int-str conversions
  31. ▲ 4
    Harmless NumPy issue receives CVE medium
    story by miohtama · 2022-06-24 · 0 comments
  32. Doesn't numpy use a natively compiled Fortran or c library for that? https://github.com/numpy/numpy/blob/main/numpy/core/src/mult...
    comment by easytiger · 2022-06-17 · in The computers are fast, but you don't know it
  33. …last year, but maybe it could still be suggested to be an extra, not in the standard package? https://github.com/numpy/numpy/issues/19591
    comment by kzrdude · 2022-05-29 · in Making pip installs a little less slow
  34. …in scipy is 77 https://github.com/scipy/scipy/search?l=fortran&p=1 50% of Fortran in numpy is 77 https://github.com/numpy/numpy/search?l=fortran&p=1 ARPACK, ATLAS, LAPACK, ODEPACK, SLATEC, UMFPACK are all notable Fortran libraries that are…
    comment by adgjlsfhk1 · 2022-04-10 · in The State of Fortran
  35. If I understand https://github.com/numpy/numpy/blob/v1.22.0/numpy/core/einsu... and https://github.com/numpy/numpy/blob/v1.22.0/numpy/core/src/m... correctly, using einsum without the optimize flag seems to use a for loop in C to do the…
    comment by cschmid · 2022-04-10 · in A basic introduction to NumPy's einsum
  36. An explanation for the atol difference between numpy and math, by the author of math.isclose(): https://github.com/numpy/numpy/issues/10161#issuecomment-350... plus a ton of flogging/benchmarking common libraries (numpy, scipy,…
    comment by PennRobotics · 2022-03-30 · in How to compare floats in Python
  37. …a shared github account: https://github.com/Developer-Ecosystem-Engineering For instance for NumPy: https://github.com/numpy/numpy/pull/19926 Although it's weird to interact with such an anonymous account in github discussions, it is very…
    comment by ogrisel · 2021-12-09 · in Apple Open Source
  38. Yes, but then they brought it back here https://github.com/numpy/numpy/pull/18874 - apparently Apple developers fixed these issues.
    comment by lopuhin · 2021-11-22 · in Benchmarking the Apple M1 Max
  39. …2018 ( https://github.com/pytorch/pytorch/issues/5059 ), which links to the closed numpy issue ( https://github.com/numpy/numpy/issues/9248 ) which just says: seed your random numbers folk. 2) The documentation in pytorch covers this (…
    comment by wokwokwok · 2021-04-11 · in A common mistake when NumPy’s RNG with PyTorch
  40. …Pandas along with PyPy and ran into failure on building numpy. Looks like it's a known issue https://github.com/numpy/numpy/issues/17807
    comment by singhkays · 2021-02-09 · in Node.js 14 is over 20x faster than Python3.8 for fib(n)
  41. That was the issue: https://github.com/numpy/numpy/issues/18281
    comment by jjgreen · 2021-02-01 · in NumPy 1.20
  42. …in Accelerate. The Accelerate framework is the only thing that has the Matrix co-processor support. https://github.com/numpy/numpy/pull/15759
    comment by jhayward · 2021-01-16 · in The Secret Apple M1 Coprocessor
  43. …like Python users won’t have access to this capability from the M1 based Macs for some time. [1] https://github.com/numpy/numpy/issues/15947
    comment by jhayward · 2020-12-29 · in Undocumented arm64 ISA extension present on the Apple M1
  44. Please open a documentation issue at https://github.com/numpy/numpy/issues describing exactly which internals you would like to see explained: indexing, ufuncs, linkage, random, dtypes, ... and what format you would like to see the…
    comment by mattip · 2020-12-12 · in How the Python object system works
  45. …no real guarantee is given, and that a relatively efficient attack has recently been demonstrated): https://github.com/numpy/numpy/issues/16313#issuecomment-726...
    comment by nsajko · 2020-11-21 · in It is high time we let go of the Mersenne Twister (2019)
  46. https://github.com/numpy/numpy/blob/master/doc/release/upcom...
    comment by moelf · 2020-11-18 · in Apple Silicon M1 chip in MacBook Air outperforms high-end 16-inch MacBook Pro
  47. …ocs.python.org/2/whatsnew/2.7.html#python-3-1-featu... [1] https://github.com/jeremybarnes/cephes [2] https://github.com/numpy/numpy
    comment by Kednicma · 2020-10-15 · in How do we tell truths that might hurt? (1975)
  48. …conditions. To do so it uses the same macro used by the socket module when doing system calls: https://github.com/numpy/numpy/blob/18a6e3e505ee416ddfc617f3...
    comment by Znafon · 2020-08-15 · in Django Async: What's new and what's next?
  49. Yes. https://github.com/numpy/numpy/blob/62fa23c44fb49c1d238e1de4...
    comment by oefrha · 2020-07-13 · in Building Elixir from source segfaults on macOS on Apple Silicon while compiling
  50. …of NumPy go to heroic lengths (via Python reference counting) to avoid doing so in many cases: https://github.com/numpy/numpy/blob/v1.18.3/numpy/core/src/m... So in this case, NumPy would actually only make one temporary copy, effectively…
    comment by shoyer · 2020-04-21 · in Python 2.7.18, the last release of Python 2