pydata/numexpr
View on GitHub ↗ ★ 2,545 Python
Fast numerical array expression evaluator for Python, NumPy, Pandas, PyTables and more
8 mentions on Hacker News by 7 people: 2 stories, 6 comments · first 2015-08-30 · latest 2026-05-19
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Numexpr: Fast numerical array expression evaluator for Python, NumPy, Pandasstory by tosh · 2026-05-19 · 4 comments
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numexpr: fast numerical array expression evaluator for Pythonstory by cl3misch · 2025-08-21 · 0 comments
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…np.xxx, np.xxx + np.xxx) You can just slap numexpr on top of it to compile this line on the fly. https://github.com/pydata/numexpr
comment by akasakahakada · 2023-03-30 · in Making Python faster with Rust -
You could use NumExpr: https://github.com/pydata/numexpr#what-is-numexpr
comment by pmeira · 2022-12-27 · in Extending Python with Rust -
Even some "safe" python libraries can be segfaulted using similar techniques. See for example https://github.com/pydata/numexpr/issues/323 I think this particular bug is even marked 'wont fix'. But I cannot find the bpo at the moment.
comment by Loranubi · 2019-12-19 · in Make CPython segfault in 5 lines of code -
…numpy computations on python by rearranging data on memory to be more cache-friendly. [0] https://github.com/pydata/numexpr
comment by dr_zoidberg · 2018-10-30 · in Qnnpack: PyTorch-integrated open source library for mobile deep learning -
…don't break syntax highlighting. One other place I've seen this done is in the numexpr for Python. https://github.com/pydata/numexpr It does seem like this ne.evaluate('a*b-4.1*a > 2.5*b') could be ne.evaluate(lambda a, b: a*b - 4.1*a >…
comment by chubot · 2016-07-09 · in A new ggplot is here -
…cache access is what brings the biggest speedups today -- see for example NumExpr[1]. [1] https://github.com/pydata/numexpr
comment by dr_zoidberg · 2015-08-30 · in Assembly Gems