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pandas-dev/pandas

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Flexible and powerful data analysis / manipulation library for Python, providing labeled data structures similar to R data.frame objects, statistical functions, and much more

56 mentions on Hacker News by 49 people: 11 stories, 45 comments · first 2013-09-30 · latest 2026-03-13

Mentions per year 56 mentions · busiest year 2020 (7)
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  1. It does appear to potentially be possible: https://github.com/pandas-dev/pandas/pull/64585
    comment by sco1 · 2026-03-13 · in OVH forgot they donated documentation hosting to Pandas
  2. ▲ 149
    OVH forgot they donated documentation hosting to Pandas
    story by nwalters512 · 2026-03-13 · 52 comments
  3. …bridging components. I built a simple bridge myself and ran some tests using the pandas project ( https://github.com/pandas-dev/pandas ), which has more than 30,000 issues. Even storing only metadata (such as title and type, excluding the…
    comment by kwhkim · 2026-02-25 · in Show HN: Git-native-issue – issues stored as commits in refs/issues/
  4. ▲ 5
    Pandas 3.0.0 Released
    story by todsacerdoti · 2026-01-21 · 1 comment
  5. …I wanted an easy weekend project that positively impacts many people this is what I'd work on. [0] https://github.com/pandas-dev/pandas/blob/main/pandas/io/exc...
    comment by imtringued · 2026-01-20 · in How we made Python's packaging library 3x faster
  6. …but "BUG: Categorical columns using the PyArrow backend requires 4x more memory" (open) https://github.com/pandas-dev/pandas/issues/58062 : > On disk Parquet appears to store the category data as logical type String which is compressed…
    comment by westurner · 2025-07-30 · in Writing memory efficient C structs
  7. https://github.com/pandas-dev/pandas/pull/58623
    comment by dkdcio · 2025-06-20 · in Open source can't coordinate?
  8. …install tqdm by default. pandas-dev/pandas//pyproject.toml [project.optional-dependencies] https://github.com/pandas-dev/pandas/blob/8943c97c597677ae98... Dask solves for various adjacent problems; IDK if pandas, dask, or dask-cudf would…
    comment by westurner · 2025-03-16 · in Show HN: Aiopandas – Async .apply() and .map() for Pandas, Faster API/LLMs Calls
  9. …backwards compatibility: https://stackoverflow.com/questions/38332787/pandas-to-sql-t... + https://github.com/pandas-dev/pandas/issues/57049#issuecomme...
    comment by swaraj · 2025-02-11 · in We are destroying software
  10. …complexity around strings in Pandas. That said there is a branch that gets most of the way there: https://github.com/pandas-dev/pandas/pull/58578 . The remaining challenges are mostly around getting consensus around how to introduce this…
    comment by ngoldbaum · 2024-10-24 · in My NumPy year: Creating a DType for the next generation of scientific computing
  11. hm https://github.com/pandas-dev/pandas/blob/main/pandas/io/par... says "fastparquet" engine must be available if no pyarrow https://pypi.org/project/fastparquet/
    comment by mistrial9 · 2024-05-08 · in The Birth of Parquet
  12. ▲ 46
    PDEP-13: The Pandas Logical Type System
    story by hackandthink · 2024-05-05 · 8 comments
  13. there is pull request to integrate in both pydantic extra types and into pandas cose [1] [1]: https://github.com/pandas-dev/pandas/issues/53999
    comment by dlahoda · 2024-02-20 · in Help Us Build Our Roadmap – Pydantic
  14. And for an example of the practical limits of @overload, take a look at the Pandas type hints: https://github.com/pandas-dev/pandas/blob/dc5586baa9e4731805... Meanwhile it's not even possible to express such things in other static type…
    comment by nerdponx · 2024-01-29 · in Python types have an expectations problem
  15. …or intellectual property law to ensure that you're in compliance with all legal requirements. [1] https://github.com/pandas-dev/pandas/blob/main/LICENSE
    comment by craigmi · 2023-05-17 · in Pandas AI
  16. …the same URL. They might be updating it... the closest I found was the Sphinx docs source for that: https://github.com/pandas-dev/pandas/blob/main/doc/source/wh...
    comment by kinow · 2023-04-03 · in Pandas 2.0
  17. ▲ 325
    Pandas 2.0
    story by calpaterson · 2023-04-03 · 111 comments
  18. PDEP-8 suggesting various changes regarding the `inplace` and `copy` arguments: https://github.com/pandas-dev/pandas/pull/51466
    comment by rekahrv · 2023-03-27 · in When is inplace in Python Pandas faster?
  19. …doing, but not enough to actually memorize all of it. I have this printed off and hung on my wall. https://github.com/pandas-dev/pandas/blob/main/doc/cheatshee...
    comment by Awelton · 2023-03-21 · in Ask HN: Resources for Fluency with Pandas?
  20. …be aware that pandas might not be fully compatible with SQLAlchemy 2.0 yet. Some github issues: https://github.com/pandas-dev/pandas/issues/40686 https://github.com/pandas-dev/pandas/issues/40460 I'm not actively following how compatible…
    comment by kh1 · 2023-01-27 · in SQLAlchemy 2.0 Released
  21. …1563 open issues labeled with a bug tag [0]. So much for "all the bugs have been ironed out". [0] https://github.com/pandas-dev/pandas/issues?q=is%3Aopen+is%3...
    comment by lr1970 · 2023-01-22 · in Replacing Pandas with Polars
  22. Setting Inplace=True is not recommended and should be used with caution https://github.com/pandas-dev/pandas/issues/16529
    comment by nojito · 2021-05-03 · in Practical SQL for Data Analysis
  23. Pandas silently converts to different dates within the same column https://github.com/pandas-dev/pandas/issues/12585
    comment by nojito · 2021-02-27 · in Arrow v1.0: After 8 years, even better dates and times for Python
  24. Some discussion here, though these people also don't seem to have much info either: https://github.com/pandas-dev/pandas/issues/39862 One person seems to have narrowed the violation down to a zipfile version of the docs available on the…
    comment by cromd · 2021-02-19 · in Pandas' reference doc considered unsafe
  25. ▲ 2
    Pandas just dropped Python 3.6 support
    story by dsr12 · 2020-09-22 · 0 comments
  26. …provide native support for CSV parsing. For example see docs for Microsoft C# [3]. ---------- [1] https://github.com/pandas-dev/pandas/blob/v1.0.3/pandas/io/p... [2] https://github.com/pandas-dev/pandas/blob/v1.0.3/pandas/io/p... [3]…
    comment by valera_rozuvan · 2020-05-15 · in So you want to write your own CSV code (2014)
  27. ▲ 4
    GitHub commit history attributes squashed commit to committer instead of author
    story by minimaxir · 2020-03-05 · 1 comment
  28. …verflow.com/questions/56690909/python-is-facin... [2] https://stackoverflow.com/a/56705419/978424 [3] https://github.com/pandas-dev/pandas/blob/761bceb77d44aa63b7...
    comment by ololobus · 2020-01-30 · in Pandas 1.0
  29. …that decide what "[d]type" a Block--the most basic thing that stores data in pandas--should be. https://github.com/pandas-dev/pandas/blob/4edcc5541ff3f6470f... And then, for the ubiquitous Object dtype, often figure out which of the many…
    comment by closed · 2020-01-30 · in Pandas 1.0
  30. ▲ 3
    pandas v1.0.0rc0
    story by cuchoi · 2020-01-10 · 0 comments
  31. ▲ 3
    Pandas Pre-Release v1.0.0rc0
    story by tandav · 2020-01-10 · 0 comments
  32. I searched, and this is the closest thing ( https://github.com/pandas-dev/pandas/issues/11503 ) but it is not the issue I experienced. I'm not sure how to submit a bug report, to be honest.
    comment by oarabbus_ · 2019-11-15 · in Why Is the Migration to Python 3 Taking So Long?
  33. Another more obscure one: https://github.com/pandas-dev/pandas/issues/27206 All of a sudden, a numpy release pulls in a new version for a pandas build (that incidentally breaks for py2) This without involving a "~=", but rather because…
    comment by Chris2048 · 2019-08-12 · in Python Is Eating the World
  34. …engine = "python") 1: https://pandas.pydata.org/pandas-docs/stable/generated/panda... 2: https://github.com/pandas-dev/pandas/issues/22435
    comment by closed · 2018-08-29 · in Python Pandas: Tricks and Features
  35. ▲ 1
    Panadas: Plan for dropping Python 2.7
    story by edward · 2018-04-16 · 0 comments
  36. ▲ 1
    Pandas – Starting January 1, 2019, all releases will be Python 3 only
    story by dsr12 · 2018-04-15 · 0 comments
  37. …(for larger sets, since according to pandas authors it is faster after a certain threshold). See https://github.com/pandas-dev/pandas/blob/master/pandas/core...
    comment by proto-n · 2018-02-08 · in Python’s Weak Performance Matters
  38. …notebook from .ipynb to LaTeX. The Pandas _repr_latex_() function calls to_latex(escape=True † ). https://github.com/pandas-dev/pandas/blob/master/pandas/core... †* The default value of escape ️ (and a few other presentational parameters)…
    comment by westurner · 2018-01-07 · in Show HN: Convert Matlab/NumPy matrices to LaTeX tables
  39. …per-se, but the article made it sounds like he's still dedicated to improvements of pandas). https://github.com/pandas-dev/pandas/graphs/contributors
    comment by Bishonen88 · 2017-12-08 · in Wes McKinney, the developer of Pandas
  40. …mention the huge contributions from the wider community toward pandas (shout-out to Jeff Reback!) https://github.com/pandas-dev/pandas/graphs/contributors
    comment by aklein · 2017-12-08 · in Wes McKinney, the developer of Pandas
  41. …can be expressed with RDF Data Cubes vocabulary And then SDMX is widely used internationally: https://github.com/pandas-dev/pandas/issues/3402#issuecommen...
    comment by westurner · 2017-09-16 · in Ask HN: What can't you do in Excel? (2017)
  42. …are not # authorized) Some pandas function can have issues with read-only buffer though: https://github.com/pandas-dev/pandas/issues/17192 (caused by a currently unsolved bug / limitation of Cython) but it can work for your use case.
    comment by ogrisel · 2017-08-16 · in Let's Remove the Global Interpreter Lock
  43. The Pandas library is not written in C at all actually. You can view the source here: https://github.com/pandas-dev/pandas/tree/master/pandas It's mostly Python with a bit of Cython, and pull requests that are not pure Python are more…
    comment by jzwinck · 2017-03-28 · in An Introduction to Stock Market Data Analysis with R – Part 1
  44. ▲ 4
    Pandas Cheat Sheet [pdf]
    story by kercker · 2017-03-10 · 0 comments
  45. …are accepted) - Coverage [3] There's also Code Climate [4] for some more introspection. [1]: https://github.com/pydata/pandas [2]: https://travis-ci.org [3]: https://codecov.io/ [4]: https://codeclimate.com/
    comment by metakermit · 2016-05-28 · in Ask HN: How do you handle large Python projects?
  46. …Pandas...but was rejected as being unpythonic. Oh and the devs claimed Apache Arrow was vaporware ! https://github.com/pydata/pandas/issues/12381
    comment by sandGorgon · 2016-03-30 · in Feather: A Fast On-Disk Format for Data Frames for R and Python
  47. …Can what dask is doing, be adapted to a simple case scenario of saving a workspace snapshot? [1] https://github.com/pydata/pandas/issues/12381#issuecomment-1...
    comment by sandGorgon · 2016-02-27 · in Distributed NumPy Arrays
  48. I found the pandas tests to be a great source for implementing robust CSV parsers: https://github.com/pydata/pandas/blob/master/pandas/io/tests...
    comment by iampims · 2015-08-16 · in Miller is like sed, awk, cut, join, and sort for name-indexed data such as CSV
  49. Here's the link to the Pandas DataFrame source: https://github.com/pydata/pandas/blob/master/pandas/core/fra... We spent a month of Sundays going through this in the NYC Python office hours. You learn a lot about this object by reading the…
    comment by aaronchall · 2015-07-16 · in Ask HN: Good Python codebases to read?
  50. The loading time is probably because of the way they are using the ORM: https://github.com/pydata/pandas/issues/8953 I guess it also isn't a great approach to do row based filtering using a data frame.
    comment by maxerickson · 2015-04-11 · in Data analytics with Pandas and SQLite