id int64 | number int64 | title string | state string | created_at timestamp[s] | updated_at timestamp[s] | closed_at timestamp[s] | html_url string | is_pull_request bool | pull_request_url string | pull_request_html_url string | user_login string | comments_count int64 | body string | labels list | reactions_plus1 int64 | reactions_minus1 int64 | reactions_laugh int64 | reactions_hooray int64 | reactions_confused int64 | reactions_heart int64 | reactions_rocket int64 | reactions_eyes int64 | comments list |
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2,990,517,180 | 61,278 | WEB: Removed Coiled as a sponsor, and update past sponsors list | closed | 2025-04-12T15:00:33 | 2025-04-13T15:37:19 | 2025-04-13T15:37:19 | https://github.com/pandas-dev/pandas/pull/61278 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61278 | https://github.com/pandas-dev/pandas/pull/61278 | datapythonista | 0 | - [X] xref #61277
Removing only Coiled for now (NumFOCUS pending discussion)
In #61121 I forgot to move removed sponsors to the past sponsors list. Doing it here. | [
"Web"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [] |
2,990,463,851 | 61,277 | WEB: Remove NumFOCUS and Coiled as sponsors | closed | 2025-04-12T13:03:38 | 2025-04-14T14:20:03 | 2025-04-13T15:39:45 | https://github.com/pandas-dev/pandas/issues/61277 | true | null | null | datapythonista | 12 | pandas is it's not really well funded these days, and we've been updating the sponsors list recently to be more accurate, and I'd like to still remove NumFOCUS and Coiled from the list. Of course I do appreciate the support that both NumFOCUS and Coiled provided and still provide to pandas, but I think having them as s... | [
"Web"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"I don't think NumFOCUS should be removed - even if not financially they still help us with legal and administrative tasks as an organization.\n\nI have no opinion on Coiled",
"> I don't think NumFOCUS should be removed - even if not financially they still help us with legal and administrative tasks as an organiz... |
2,990,436,119 | 61,276 | BUG:FutureWarning for palette parameter without hue in faceted distributions | closed | 2025-04-12T12:05:08 | 2025-04-26T12:04:05 | 2025-04-26T12:04:01 | https://github.com/pandas-dev/pandas/issues/61276 | true | null | null | lavaeagle2 | 2 | ### Pandas version checks
- [x] I have checked that this issue has not already been reported.
- [x] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas.
- [x] I have confirmed this bug exists on the [main branch](https://pandas.pydata.org/docs/dev/ge... | [
"Bug",
"Visualization"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"> This behavior needs clarification or adjustment in Pandas' integration with Seaborn plotting functions.\n\nCan you clarify why you think this is a pandas issue?\n\n> The warning should either be suppressed or handled gracefully within Pandas' plotting functions when interfacing with Seaborn.\n\nAs far as I can t... |
2,990,297,299 | 61,275 | ENH: support reading directory in read_csv | open | 2025-04-12T07:09:32 | 2025-08-21T20:51:49 | null | https://github.com/pandas-dev/pandas/pull/61275 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61275 | https://github.com/pandas-dev/pandas/pull/61275 | fangchenli | 6 | - [x] closes https://github.com/bodo-ai/Bodo-Pandas-Collaboration/issues/2
- [x] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [x] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/dev... | [
"IO CSV"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"FWIW I recall the team being negative in the past about supporting reading directories of files, and we document just concatting DataFrames read from a directory: https://pandas.pydata.org/docs/user_guide/cookbook.html#reading-multiple-files-to-create-a-single-dataframe. Are we sure we want to include this?",
">... |
2,989,968,950 | 61,274 | DOC: Add documentation for `groupby.expanding()` | closed | 2025-04-12T00:15:43 | 2025-04-15T12:27:07 | 2025-04-14T22:41:29 | https://github.com/pandas-dev/pandas/pull/61274 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61274 | https://github.com/pandas-dev/pandas/pull/61274 | arthurlw | 3 | - [x] closes #61254
- [ ] ~[Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature~
- [x] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).
- ... | [
"Docs",
"Groupby",
"Window"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks @arthurlw - If you're interested I also think it would be good to replace `*args` and `**kwargs` throughout the public functions in the pandas API with the exact arguments that the method takes. This is more user-friendly not only for docs, but for linting and auto-completion.",
"Yeah I would be happy to ... |
2,989,028,515 | 61,273 | ENH: Add `tzdata` to the `_hard_dependencies` | closed | 2025-04-11T15:43:38 | 2025-04-22T16:04:23 | 2025-04-22T16:04:23 | https://github.com/pandas-dev/pandas/issues/61273 | true | null | null | chilin0525 | 2 | ### Feature Type
- [ ] Adding new functionality to pandas
- [x] Changing existing functionality in pandas
- [ ] Removing existing functionality in pandas
### Problem Description
In https://github.com/pandas-dev/pandas/pull/61084#pullrequestreview-2669422152, suggesting that `tzdata` should be added to the `_hard... | [
"Enhancement",
"Dependencies"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"I working on related issue in https://github.com/pandas-dev/pandas/pull/61084. I'd be happy to work on this after #61084 merged!",
"take"
] |
2,988,760,690 | 61,272 | BUILD: Error installing pandas 2.2.3 on AIX 7.3 system (error: conflicting types for lockf64, lseek64, ftruncate64..) | closed | 2025-04-11T14:00:12 | 2025-04-17T08:40:33 | 2025-04-17T08:40:30 | https://github.com/pandas-dev/pandas/issues/61272 | true | null | null | jose1711 | 1 | ### Installation check
- [x] I have read the [installation guide](https://pandas.pydata.org/pandas-docs/stable/getting_started/install.html#installing-pandas).
### Platform
AIX-3-CENSORED-powerpc-64bit
### Installation Method
pip install
### pandas Version
2.2.3
### Python Version
3.11
### Installation Logs
... | [
"Build"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Apparently AIX needs some extra care. I did compile it with a patched version by IBM. Steps for reference:\n\nInstall `numpy`\n```\nexport CXX=\"g++ -pthread\"\nexport CXXFLAGS=-maix64\nexport OBJECT_MODE=64\nexport LDFLAGS=\"-maix64 -lm\"\nexport CC=\"gcc -pthread\"\nexport CFLAGS=-maix64\n \npip install --no-cac... |
2,988,653,395 | 61,271 | Add Pandas Cookbook to Book Recommendations | closed | 2025-04-11T13:16:27 | 2025-04-12T16:04:22 | 2025-04-11T15:48:57 | https://github.com/pandas-dev/pandas/pull/61271 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61271 | https://github.com/pandas-dev/pandas/pull/61271 | WillAyd | 9 | The link here is a special link used to track sales of the Pandas Cookbook through the pandas website. NumFOCUS and Packt (the publisher) have agreed that the latter will donate part of the proceeds through this link directly back to NumFOCUS | [
"Docs"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks @WillAyd ",
"@WillAyd @mroeschke @pandas-dev/pandas-core, great to have the book added (and published), but would it makes sense to revert this commit? It's still the last one, and it increases the repo size by 1.3Mb for the book cover. We can optimize it like the other book covers, and leave it in around... |
2,988,313,708 | 61,270 | BUG: Unexpected behavior change in DataFrame.min(axis=1) with numpy.array elements in pandas 2.2 vs pandas 1.1 | closed | 2025-04-11T10:55:24 | 2025-04-13T16:25:41 | 2025-04-13T16:25:38 | https://github.com/pandas-dev/pandas/issues/61270 | true | null | null | tanjt107 | 8 | ### Pandas version checks
- [x] I have checked that this issue has not already been reported.
- [x] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas.
- [x] I have confirmed this bug exists on the [main branch](https://pandas.pydata.org/docs/dev/ge... | [
"Bug",
"Nested Data"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | [
"Haven't validated, but this might have changed with #51335",
"I think the current behavior is more logical. However, should a bug be raised instead to avoid confusion?",
"@tanjt107 \n\n> should a bug be raised instead to avoid confusion?\n\nWhat does it mean to \"raise a bug\"?",
"Sorry I meant raising an e... |
2,987,906,651 | 61,269 | BUG: pandas change in style overrides defaults format for other columns | closed | 2025-04-11T08:11:14 | 2025-04-13T20:21:26 | 2025-04-13T20:21:25 | https://github.com/pandas-dev/pandas/issues/61269 | true | null | null | lcrmorin | 4 | ### Pandas version checks
- [x] I have checked that this issue has not already been reported.
- [x] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas.
- [ ] I have confirmed this bug exists on the [main branch](https://pandas.pydata.org/docs/dev/ge... | [
"Styler",
"Closing Candidate"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Confirmed this still happens on the latest main. Applying `.style.format()` to just one column causes the others to fall back to full precision. I’m guessing `.style.format()` overrides `display.float_format` entirely, so other columns fall back to default formatting.",
"Please read the **notes** section of http... |
2,987,709,592 | 61,268 | DOC: Add documentation for `groupby.ewm()` | closed | 2025-04-11T06:42:06 | 2025-04-14T20:05:36 | 2025-04-14T20:05:36 | https://github.com/pandas-dev/pandas/issues/61268 | true | null | null | arthurlw | 1 | ### Pandas version checks
- [x] I have checked that the issue still exists on the latest versions of the docs on `main` [here](https://pandas.pydata.org/docs/dev/)
### Location of the documentation
https://pandas.pydata.org/docs/dev/reference/groupby.html
### Documentation problem
There is no reference for `DataF... | [
"Docs",
"Needs Triage"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"take"
] |
2,987,073,547 | 61,267 | BUG: Inconsistent date resolution | closed | 2025-04-10T22:29:16 | 2025-04-13T12:31:35 | 2025-04-13T12:31:31 | https://github.com/pandas-dev/pandas/issues/61267 | true | null | null | super-ibby | 2 | ### Pandas version checks
- [x] I have checked that this issue has not already been reported.
- [x] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas.
- [x] I have confirmed this bug exists on the [main branch](https://pandas.pydata.org/docs/dev/ge... | [
"Bug",
"Datetime"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks for the report. This seems to be fixed in main. Can you confirm you can reproduce this with the main branch (check box 3)?",
"I'm seeing the same @asishm - closing."
] |
2,986,796,920 | 61,266 | Backport PR #61265: TYP: Add ignores for numpy 2.2 updates | closed | 2025-04-10T20:22:58 | 2025-04-11T01:14:52 | 2025-04-11T01:14:48 | https://github.com/pandas-dev/pandas/pull/61266 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61266 | https://github.com/pandas-dev/pandas/pull/61266 | mroeschke | 1 | xref https://github.com/pandas-dev/pandas/pull/61265 | [
"Code Style",
"Typing"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Ah numpy is still pinned < 2 on 2.3 so we don't need this backport"
] |
2,986,409,258 | 61,265 | TYP: Add ignores for numpy 2.2 updates | closed | 2025-04-10T17:36:13 | 2025-04-11T01:15:01 | 2025-04-10T20:17:42 | https://github.com/pandas-dev/pandas/pull/61265 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61265 | https://github.com/pandas-dev/pandas/pull/61265 | mroeschke | 2 | - [ ] closes #xxxx (Replace xxxx with the GitHub issue number)
- [ ] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [ ] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/con... | [
"Code Style",
"Typing"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Merging to get CI to green. The type ignore can be addressed in the future",
"Owee, I'm MrMeeseeks, Look at me.\n\nThere seem to be a conflict, please backport manually. Here are approximate instructions:\n\n1. Checkout backport branch and update it.\n\n```\ngit checkout 2.3.x\ngit pull\n```\n\n2. Cherry pick th... |
2,985,510,148 | 61,264 | API: Rename `arg` to `func` in `Series.map` | closed | 2025-04-10T12:30:14 | 2025-08-13T20:53:05 | 2025-04-14T13:14:29 | https://github.com/pandas-dev/pandas/pull/61264 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61264 | https://github.com/pandas-dev/pandas/pull/61264 | datapythonista | 1 | - [X] closes #61260
- [X] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [X] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).
- [X]... | [
"Deprecate",
"Apply",
"API - Consistency"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks @datapythonista "
] |
2,983,703,172 | 61,263 | BUG: Impossible creation of array with dtype=string | closed | 2025-04-09T19:22:02 | 2025-05-15T16:13:30 | 2025-05-15T16:13:21 | https://github.com/pandas-dev/pandas/pull/61263 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61263 | https://github.com/pandas-dev/pandas/pull/61263 | Manju080 | 12 | closes #61155
- [X] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [X] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).
Hello @... | [
"Bug",
"Strings"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Also, please add a test for this.",
"pre-commit.ci autofix",
"> We use pytest for testing, you'll need to add a test using that format. See here:\r\n> \r\n> https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#using-pytest\r\n> \r\n> The general pytest introduction may also be usefu... |
2,983,689,327 | 61,262 | DEBUG: Cython failures | closed | 2025-04-09T19:15:21 | 2025-04-09T21:27:50 | 2025-04-09T21:27:45 | https://github.com/pandas-dev/pandas/pull/61262 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61262 | https://github.com/pandas-dev/pandas/pull/61262 | mroeschke | 2 | Trying to get a Cython reproducer for https://github.com/pandas-dev/pandas/pull/61249 | [
"Build"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"First piece of repro from [8837a71](https://github.com/pandas-dev/pandas/pull/61262/commits/8837a71a9797cdc82f331c1205759e473e5fa219)\r\n\r\n```cython\r\ncpdef timedelta debug_2():\r\n cdef int64_t val = -420000000000\r\n us, remainder = divmod(val, 1000)\r\n if remainder >= 500:\r\n us += 1\r\n ... |
2,983,553,901 | 61,261 | CI: Pin Cython to a specific commit Window PY3.13t builds | closed | 2025-04-09T18:21:08 | 2025-04-09T19:48:27 | 2025-04-09T19:48:24 | https://github.com/pandas-dev/pandas/pull/61261 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61261 | https://github.com/pandas-dev/pandas/pull/61261 | mroeschke | 0 | Manual backport of https://github.com/pandas-dev/pandas/pull/61249 | [
"CI"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [] |
2,983,486,796 | 61,260 | API: Rename arg to func in Series.map for consistency | closed | 2025-04-09T17:47:36 | 2025-04-14T13:41:22 | 2025-04-14T13:14:30 | https://github.com/pandas-dev/pandas/issues/61260 | true | null | null | datapythonista | 2 | The API of methods taking udf follow certain patterns that make them consistent and easier to learn and use. There are some small differences, which have been listed in #40112 and #61128.
This issue is to rename the `arg` parameter of `Series.map` to `func`, which is the name consistently used in almost all methods. I... | [
"API Design",
"Apply",
"API - Consistency"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"@pandas-dev/pandas-core I thought that it was a good idea when renaming `arg` in `Series.map` to `func` to make it only accept a function, for consistency with other functions and simplicity with the name. I thought for users it'd be as simply as using `my_dict.get` instead of `my_dict` as the argument.\n\nBut see... |
2,981,501,667 | 61,259 | Add to_snake_case and to_camel_case for index label conversion using … | closed | 2025-04-09T04:31:33 | 2025-04-10T00:58:47 | 2025-04-09T16:44:42 | https://github.com/pandas-dev/pandas/pull/61259 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61259 | https://github.com/pandas-dev/pandas/pull/61259 | ek-ok | 2 | **Add `to_snake_case` and `to_camel_case` methods for Index label conversion**
This PR adds two new string transformation methods to the `pandas.Index` class:
### 🚀 New methods
- `to_snake_case()`: Converts string index labels to `snake_case` using `inflection.underscore`
- `to_camel_case()`: Converts string i... | [] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks for the PR, but it appears this feature is not tied to an open issue with core developer support. For new APIs, we would need core developer support before adding new API. (Note given the simplicity of this feature, it's unlikely that this would be added to pandas.)\r\n\r\nThanks for the suggestion but clos... |
2,981,294,469 | 61,258 | DOC: Update the last ArcticDB link in ecosystem.md | closed | 2025-04-09T01:24:17 | 2025-04-09T16:45:55 | 2025-04-09T16:45:48 | https://github.com/pandas-dev/pandas/pull/61258 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61258 | https://github.com/pandas-dev/pandas/pull/61258 | star1327p | 1 | Update the last ArcticDB link in ecosystem.md.
Correct link:
https://docs.arcticdb.io/latest/api/processing/#arcticdb.QueryBuilder
The old link does not work:
https://docs.arcticdb.io/latest/api/query_builder/
- [ ] closes #xxxx (Replace xxxx with the GitHub issue number)
- [ ] [Tests added and passed](http... | [
"Docs"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks again @star1327p "
] |
2,980,801,799 | 61,257 | Changed term non-null to NA | closed | 2025-04-08T19:51:26 | 2025-04-10T16:04:14 | 2025-04-10T16:04:03 | https://github.com/pandas-dev/pandas/pull/61257 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61257 | https://github.com/pandas-dev/pandas/pull/61257 | DarthKitten2130 | 1 | - [ ] closes #60802
Changed the term non-null to NA, to reflect pandas' docs standard
| [
"Docs"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks @DarthKitten2130 "
] |
2,980,335,275 | 61,256 | ENH: Utility to return "feasible" dtype for `infer_dtype` output. | open | 2025-04-08T16:32:10 | 2025-06-29T16:06:55 | null | https://github.com/pandas-dev/pandas/issues/61256 | true | null | null | mroeschke | 2 | `pandas.api.types.infer_dtype` returns a string label of the inferred type of data. (While these should probably be an `enum`), these string labels do not map cleanly to what supported pandas data type represents that data e.g `"mixed"` would probably map to `"object"`
It would be nice to
1. Add a parameter `as_pand... | [
"Enhancement",
"Needs Discussion"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"If we add the `as_pandas_type` parameter in `infer_dtype`, is a separate function still necessary?\n\nI think having a separate function makes the mapping logic reusable outside of `infer_dtype` (like for testing or downstream libraries), but I’m curious if others see it as necessary if we already have the param a... |
2,980,222,415 | 61,255 | DOC: Add real-world aggregation example to GroupBy user guide | closed | 2025-04-08T15:48:24 | 2025-04-08T16:44:40 | 2025-04-08T16:44:39 | https://github.com/pandas-dev/pandas/pull/61255 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61255 | https://github.com/pandas-dev/pandas/pull/61255 | udayanand22 | 3 | This PR adds a real-world example using sales data to the GroupBy Aggregation section in the user guide (groupby.rst). This enhances understanding for new users by supplementing the existing animals DataFrame example with a business-style case. | [] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"The failing doc build seems unrelated to the change introduced in this PR, which only adds a real-world GroupBy aggregation example. Please let me know if any adjustments are needed—happy to update.",
"@pandas-dev/mentors – Submitted my GSOC 2025 proposal to revamp Pandas docs! \r\nWould love your feedback. Rea... |
2,979,660,728 | 61,254 | DOC: Add documentation for groupby.expanding() | closed | 2025-04-08T12:36:06 | 2025-04-14T22:41:30 | 2025-04-14T22:41:30 | https://github.com/pandas-dev/pandas/issues/61254 | true | null | null | olek-osikowicz | 2 | ### Pandas version checks
- [x] I have checked that the issue still exists on the latest versions of the docs on `main` [here](https://pandas.pydata.org/docs/dev/)
### Location of the documentation
"https://pandas.pydata.org/docs/dev/reference/groupby.html"
### Documentation problem
There is no reference for `Dat... | [
"Docs",
"Groupby",
"Window"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks for the report. Agreed this should be added. While adding it to the API docs will make it show up, it looks like the current docstring should also be greatly improved as well.\n\nPRs to improve are welcome!",
"take"
] |
2,979,650,869 | 61,253 | BUG: Selecting the wrong first column | closed | 2025-04-08T12:32:18 | 2025-04-08T21:07:43 | 2025-04-08T21:07:37 | https://github.com/pandas-dev/pandas/issues/61253 | true | null | null | morzen | 1 | ### Pandas version checks
- [x] I have checked that this issue has not already been reported.
- [x] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas.
- [ ] I have confirmed this bug exists on the [main branch](https://pandas.pydata.org/docs/dev/ge... | [
"Bug",
"IO CSV"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks for the report. If you would like pandas to not infer the first values as an index, you can pass `index_col=False` to `read_csv`.\n\nClosing for now. If this doesn't resolve your issue, reply here as to why and we can reopen."
] |
2,979,291,332 | 61,252 | BUG: AttributeError: 'SparseArray' object has no attribute 'round' | closed | 2025-04-08T10:10:36 | 2025-04-08T21:14:44 | 2025-04-08T21:14:41 | https://github.com/pandas-dev/pandas/issues/61252 | true | null | null | ShuyangXu | 2 | ### Pandas version checks
- [x] I have checked that this issue has not already been reported.
- [x] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas.
- [ ] I have confirmed this bug exists on the [main branch](https://pandas.pydata.org/docs/dev/ge... | [
"Bug",
"Sparse"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Hi! 👋 I’d like to work on this issue. I can reproduce the bug as described and will look into adding support for .round() on SparseArray. Let me know if this is okay to proceed.",
"Closing as a duplicate of #49387. That issue has a PR linked to it, and that PR does indeed resolve this issue."
] |
2,979,048,343 | 61,251 | PERF: future_stack is too slow | closed | 2025-04-08T08:39:36 | 2025-04-08T16:18:08 | 2025-04-08T16:18:07 | https://github.com/pandas-dev/pandas/issues/61251 | true | null | null | auderson | 1 | ### Pandas version checks
- [x] I have checked that this issue has not already been reported.
- [x] I have confirmed this issue exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas.
- [ ] I have confirmed this issue exists on the main branch of pandas.
### Reproducible Examp... | [
"Performance",
"Needs Triage"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks, but closing as a duplicate of https://github.com/pandas-dev/pandas/issues/58391"
] |
2,978,363,392 | 61,250 | BUG: Raise error if not busdaycalendar | closed | 2025-04-08T01:34:52 | 2025-05-19T16:16:29 | 2025-05-19T16:16:29 | https://github.com/pandas-dev/pandas/pull/61250 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61250 | https://github.com/pandas-dev/pandas/pull/61250 | j-hendricks | 2 | Closes #60647. Raises TypeError if anything other than `None` or `np.busdaycalendar` is passed to `calendar`. Also added test for this exception as well as a note in whatsnew
- [x] closes #60647 (Replace xxxx with the GitHub issue number)
- [x] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/deve... | [
"Stale"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"This pull request is stale because it has been open for thirty days with no activity. Please [update](https://pandas.pydata.org/pandas-docs/stable/development/contributing.html#updating-your-pull-request) and respond to this comment if you're still interested in working on this.",
"Thanks for the pull request, b... |
2,978,085,469 | 61,249 | BLD: Try installing older Cython for windows free threading build | closed | 2025-04-07T21:57:16 | 2025-05-16T03:09:16 | 2025-04-09T17:56:30 | https://github.com/pandas-dev/pandas/pull/61249 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61249 | https://github.com/pandas-dev/pandas/pull/61249 | mroeschke | 17 | - [ ] closes #61242 (Replace xxxx with the GitHub issue number)
| [
"Build"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Note: Older ninja or numpy failures versions are exhibiting the same failures. I suspect a Cython change might be the culprit ",
"The traceback showing up in the test suite is suspicious:\r\n\r\n```sh\r\n2025-04-08T19:28:28.2539512Z Traceback (most recent call last):\r\n2025-04-08T19:28:28.2554584Z File \"pand... |
2,977,882,677 | 61,248 | CI Use released numpy for Windows wheels testing | closed | 2025-04-07T20:07:10 | 2025-04-10T17:55:03 | 2025-04-10T16:46:26 | https://github.com/pandas-dev/pandas/pull/61248 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61248 | https://github.com/pandas-dev/pandas/pull/61248 | lesteve | 3 | Following #61249 this also used released numpy for testing on Windows free-threaded wheels. | [
"Build"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"I guess this doesn't fix the nightly wheels failure, since the issue seems related to cython dev according to https://github.com/pandas-dev/pandas/pull/61249.\r\n\r\nIt could still be worth to merge this PR to use released numpy.\r\n\r\nI'll move it ouf of draft, when the wheels are back to green on `main`.",
"O... |
2,977,840,944 | 61,247 | ENH: Functionality to aid with Database Imports | open | 2025-04-07T19:46:37 | 2025-08-12T18:51:53 | null | https://github.com/pandas-dev/pandas/issues/61247 | true | null | null | mwiles217 | 4 | ### Feature Type
- [x] Adding new functionality to pandas
- [x] Changing existing functionality in pandas
- [ ] Removing existing functionality in pandas
### Problem Description
I would like the ability to have the following features to aid in Database import. 1) Unicode/Non Unicode identification for columns, 2... | [
"Enhancement",
"IO SQL",
"Needs Triage",
"Closing Candidate"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Pandas core typically stays database-agnostic, calling through SQLAlchemy, and the logic above is very tightly coupled to Microsoft SQL Server. However the existing [bcpandas](https://pypi.org/project/bcpandas/) project exists to speed SQL Server-specific (particularly BCP-based) functionality in pandas and is par... |
2,977,566,483 | 61,246 | STY: Bump pre-commit checks | closed | 2025-04-07T17:46:30 | 2025-04-07T21:21:35 | 2025-04-07T21:21:32 | https://github.com/pandas-dev/pandas/pull/61246 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61246 | https://github.com/pandas-dev/pandas/pull/61246 | mroeschke | 0 | Supersedes https://github.com/pandas-dev/pandas/pull/61243 | [
"Code Style"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [] |
2,977,538,258 | 61,245 | BUG: remove_unused_levels does not keep index levels order | open | 2025-04-07T17:32:22 | 2025-04-08T21:19:10 | null | https://github.com/pandas-dev/pandas/issues/61245 | true | null | null | mathman79 | 2 | ### Pandas version checks
- [x] I have checked that this issue has not already been reported.
- [x] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas.
- [x] I have confirmed this bug exists on the [main branch](https://pandas.pydata.org/docs/dev/ge... | [
"Bug",
"MultiIndex",
"Needs Discussion",
"Sorting"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Naively I would expected `remove_unused_index_levels` do something like below (assuming we always want the levels to be sorted):\n\n```\ndef remove_unused_index_levels(index: pd.MultiIndex) -> pd.MultiIndex:\n \"\"\"Remove unused index levels, keeping levels ordered.\"\"\"\n codes, levels, names = index_code... |
2,977,449,661 | 61,244 | BUG: Handle overlapping line and scatter on the same plot | closed | 2025-04-07T16:50:39 | 2025-04-09T16:44:13 | 2025-04-09T16:28:51 | https://github.com/pandas-dev/pandas/pull/61244 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61244 | https://github.com/pandas-dev/pandas/pull/61244 | MartinBraquet | 2 | - [x] closes #61005
- [x] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [x] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).
- [x]... | [
"Visualization"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"@mroeschke Thanks for the feedback; I applied your comments.",
"Thanks @MartinBraquet "
] |
2,977,402,605 | 61,243 | [pre-commit.ci] pre-commit autoupdate | closed | 2025-04-07T16:29:50 | 2025-04-07T17:47:10 | 2025-04-07T17:46:45 | https://github.com/pandas-dev/pandas/pull/61243 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61243 | https://github.com/pandas-dev/pandas/pull/61243 | pre-commit-ci[bot] | 0 | <!--pre-commit.ci start-->
updates:
- [github.com/astral-sh/ruff-pre-commit: v0.9.9 → v0.11.4](https://github.com/astral-sh/ruff-pre-commit/compare/v0.9.9...v0.11.4)
- [github.com/pre-commit/mirrors-clang-format: v19.1.7 → v20.1.0](https://github.com/pre-commit/mirrors-clang-format/compare/v19.1.7...v20.1.0)
- [github.... | [] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [] |
2,977,179,313 | 61,242 | No Windows free-threaded wheel available in scientific-python-nightly-wheels | closed | 2025-04-07T15:06:16 | 2025-04-09T17:56:31 | 2025-04-09T17:56:31 | https://github.com/pandas-dev/pandas/issues/61242 | true | null | null | lesteve | 2 | In scikit-learn we noticed there are no Windows free-threaded development wheel in [scientific-python-nightly-wheels](https://anaconda.org/scientific-python-nightly-wheels/pandas/files).
The reason seems to be that your Wheels builder has failed consistently for more than a week, see [build logs](https://github.com/pa... | [] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks for the ping. We've started an attempt to try to root cause these failures in https://github.com/pandas-dev/pandas/pull/61240 but not much progress yet ",
"In Arrow we have temporarily disabled testing with pandas for Windows free-threaded to unblock our 20.0.0 release. We will re-enable once this issue i... |
2,975,301,216 | 61,241 | DOC Update the awkward-pandas GitHub link | closed | 2025-04-06T23:18:27 | 2025-04-07T16:35:37 | 2025-04-07T16:35:30 | https://github.com/pandas-dev/pandas/pull/61241 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61241 | https://github.com/pandas-dev/pandas/pull/61241 | star1327p | 1 | In ecosystems.md, the awkward-pandas link should be:
https://github.com/scikit-hep/awkward
The old link does not work:
https://awkward-pandas.readthedocs.io/
- [ ] closes #xxxx (Replace xxxx with the GitHub issue number)
- [ ] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/con... | [
"Docs"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks @star1327p "
] |
2,975,022,712 | 61,240 | BLD/CI: Try to fix the Windows Python 3.13t wheel build | closed | 2025-04-06T15:27:16 | 2025-04-10T12:26:57 | 2025-04-10T12:26:52 | https://github.com/pandas-dev/pandas/pull/61240 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61240 | https://github.com/pandas-dev/pandas/pull/61240 | lithomas1 | 3 | - [ ] closes #xxxx (Replace xxxx with the GitHub issue number)
- [ ] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [ ] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/con... | [
"Build",
"Windows",
"Python 3.13"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"FYI for anyone interested:\r\nThe Windows wheel builder CI (just the free-threaded builds) have been failing for the past 2 weeks. It seems like there's omething wonrg with the datetime code. I already took a look at numpy/tzdata versions, but those don't seem to be the problem (and I'm not sure what to look at ne... |
2,974,932,003 | 61,239 | made changes | closed | 2025-04-06T12:42:28 | 2025-04-06T12:42:37 | 2025-04-06T12:42:37 | https://github.com/pandas-dev/pandas/pull/61239 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61239 | https://github.com/pandas-dev/pandas/pull/61239 | Vaishnav-raj-vp | 0 | - [ ] closes #xxxx (Replace xxxx with the GitHub issue number)
- [ ] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [ ] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/con... | [] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [] |
2,974,899,214 | 61,238 | DOC: Added docstrings to min, max, and reso | closed | 2025-04-06T11:42:54 | 2025-04-07T16:58:00 | 2025-04-07T16:57:53 | https://github.com/pandas-dev/pandas/pull/61238 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61238 | https://github.com/pandas-dev/pandas/pull/61238 | j-hendricks | 1 | Closes #59458
Added docstrings to `min`, `max`, and `resolution` for class `Timestamp`. Used same approach as seen in PR #61119
- [x] closes #59458 (Replace xxxx with the GitHub issue number)
- [ ] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-t... | [
"Docs"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks @j-hendricks "
] |
2,974,876,714 | 61,237 | ENH: Add dropna parameter to Series.unique() (fixes #61209) | closed | 2025-04-06T11:00:59 | 2025-05-15T16:10:28 | 2025-05-15T16:10:28 | https://github.com/pandas-dev/pandas/pull/61237 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61237 | https://github.com/pandas-dev/pandas/pull/61237 | sahermuhamed1 | 1 | - [x] closes #xxxx (Replace xxxx with the GitHub issue number)
- [x] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [ ] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/con... | [] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks for the pull request, but it appears to have gone stale. If interested in continuing, please merge in the main branch, address any review comments and/or failing tests, and we can reopen."
] |
2,974,721,242 | 61,236 | BUG: Pyarrow timestamp support for map() function | closed | 2025-04-06T06:10:47 | 2025-05-21T16:13:33 | 2025-05-21T16:13:33 | https://github.com/pandas-dev/pandas/pull/61236 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61236 | https://github.com/pandas-dev/pandas/pull/61236 | arthurlw | 2 | - [x] closes #61231 (Replace xxxx with the GitHub issue number)
- [x] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [x] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/c... | [
"Stale",
"Arrow"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"This pull request is stale because it has been open for thirty days with no activity. Please [update](https://pandas.pydata.org/pandas-docs/stable/development/contributing.html#updating-your-pull-request) and respond to this comment if you're still interested in working on this.",
"Thanks for the pull request, b... |
2,974,486,431 | 61,235 | ENH: Add dropna parameter to Series.unique() (fixes #61209) | closed | 2025-04-05T20:30:17 | 2025-05-15T16:10:56 | 2025-05-15T16:10:56 | https://github.com/pandas-dev/pandas/pull/61235 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61235 | https://github.com/pandas-dev/pandas/pull/61235 | sahermuhamed1 | 1 | - [x] closes #xxxx (Replace xxxx with the GitHub issue number)
- [x] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [x] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/con... | [] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks for the pull request, but it appears to have gone stale. If interested in continuing, please merge in the main branch, address any review comments and/or failing tests, and we can reopen."
] |
2,974,366,339 | 61,234 | BUG: Fix DatetimeIndex timezone preservation when joining indexes with same timezone but different units | closed | 2025-04-05T17:08:57 | 2025-05-30T18:22:01 | 2025-05-30T18:21:53 | https://github.com/pandas-dev/pandas/pull/61234 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61234 | https://github.com/pandas-dev/pandas/pull/61234 | myenugula | 5 | - [x] closes #60080
- [x] [Tests added and passed]
- [x] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).
- [x] Added [type annotations]
- [x] Added an entry in the latest `doc/source/whatsnew/vX.X.X.rst` file if fixing a bug or adding a new feat... | [
"Bug",
"Dtype Conversions",
"Timezones"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Hi @rhshadrach, could you please check this one out?",
"I agree with @rhshadrach's comment on splitting/parametrizing the test, otherwise this LGTM",
"Hi @rhshadrach, I see that you've requested changes. Could you please clarify what exactly needs to be changed? as I've already made the changes you've requeste... |
2,974,321,187 | 61,233 | BUG: Fix scatter plot colors in groupby context to match line plot behavior (#59846) | closed | 2025-04-05T16:16:14 | 2025-07-28T17:19:06 | 2025-07-28T17:19:06 | https://github.com/pandas-dev/pandas/pull/61233 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61233 | https://github.com/pandas-dev/pandas/pull/61233 | myenugula | 5 | - [x] closes #59846
- [x] [Tests added and passed]
- [x] All [code checks passed]
- [x] Added [type annotations]
- [x] Added an entry in the latest `doc/source/whatsnew/vX.X.X.rst` file if fixing a bug or adding a new feature.
| [
"Bug",
"Groupby",
"Visualization",
"Stale"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"I removed all unnecessary comments in the test function",
"This pull request is stale because it has been open for thirty days with no activity. Please [update](https://pandas.pydata.org/pandas-docs/stable/development/contributing.html#updating-your-pull-request) and respond to this comment if you're still inter... |
2,972,876,056 | 61,232 | ENH: The method of obtaining a certain cell or slice of the dataframe is confusing and unclear | closed | 2025-04-04T16:27:25 | 2025-08-05T16:30:20 | 2025-08-05T16:30:20 | https://github.com/pandas-dev/pandas/issues/61232 | true | null | null | zyy37 | 3 | ### Feature Type
- [ ] Adding new functionality to pandas
- [x] Changing existing functionality in pandas
- [ ] Removing existing functionality in pandas
### Problem Description
The method of obtaining a certain cell or slice of the dataframe is confusing and unclear, such as using `loc`, `iloc`, `at`, `iat`, and... | [
"Enhancement",
"Needs Triage",
"Closing Candidate"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Eh, this is reaching at best. If it ain't broke don't fix it",
"This is the sort of stuff that would have been discussed in the earlier stages of a project but pandas in far too deep. Adding call syntax to `_Loc` is probably not gonna happen as it's a common complaint that the API is already way too verbose with... |
2,972,750,429 | 61,231 | BUG: PyArrow timestamp type does not work with map() function | open | 2025-04-04T15:34:54 | 2025-06-07T11:41:43 | null | https://github.com/pandas-dev/pandas/issues/61231 | true | null | null | dbalabka | 3 | ### Pandas version checks
- [x] I have checked that this issue has not already been reported.
- [x] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas.
- [x] I have confirmed this bug exists on the [main branch](https://pandas.pydata.org/docs/dev/ge... | [
"Bug",
"Apply",
"Arrow"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks for reporting. Confirmed on main. Investigations and PRs to fix are welcome.",
"take",
"take"
] |
2,972,742,661 | 61,230 | ENH: The row and column indexing mechanism of your dataframe is inefficient, leading to errors and unnecessary time consumption | open | 2025-04-04T15:32:05 | 2025-06-29T16:01:27 | null | https://github.com/pandas-dev/pandas/issues/61230 | true | null | null | zyy37 | 3 | ### Feature Type
- [ ] Adding new functionality to pandas
- [x] Changing existing functionality in pandas
- [ ] Removing existing functionality in pandas
### Problem Description
The row and column indexing mechanism of your dataframe is inefficient, leading to errors and unnecessary time consumption for users. Wh... | [
"Enhancement",
"Needs Triage",
"Closing Candidate"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"You should avoid `inplace=True` and `iterrows`. Calling `reset_index` is also often questionable (do it only when needed). If you don't have a meaningful index, just do `pd.concat(..., ignore_index=True)`\n\nIterating the DF in a for loop via `iterrows` is the worst thing you can do performace-wise. Best forget th... |
2,970,740,046 | 61,229 | BUG: Fix #61222: Keep index name when resampling with pyarrow dtype | closed | 2025-04-03T21:39:09 | 2025-04-07T16:55:16 | 2025-04-07T16:55:09 | https://github.com/pandas-dev/pandas/pull/61229 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61229 | https://github.com/pandas-dev/pandas/pull/61229 | mthiboust | 2 | - [x] closes #61222
- [x] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [x] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).
- [x]... | [
"Resample",
"Arrow"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"@mroeschke Thanks for your review. I addressed your comments.",
"Thanks @mthiboust "
] |
2,970,419,833 | 61,228 | Fix false friends in implicit string concatenation in tests | closed | 2025-04-03T18:52:35 | 2025-04-03T21:53:19 | 2025-04-03T21:53:11 | https://github.com/pandas-dev/pandas/pull/61228 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61228 | https://github.com/pandas-dev/pandas/pull/61228 | jbdyn | 3 | [In a PR](https://github.com/nvim-treesitter/nvim-treesitter/pull/7788) about how to syntax-highlight Python docstrings, @rmuir and I discovered that instead of implicit concatenation of strings a string plus a docstring have been written.
Since this is a subtle one, I want to briefly show the differences:
The f... | [
"Testing"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"As a side note:\r\n\r\nThe tests passed before because they called [`assert_produces_warning`](https://github.com/pandas-dev/pandas/blob/main/pandas/_testing/_warnings.py#L29), which in turn calls [`_assert_caught_expected_warnings`](https://github.com/pandas-dev/pandas/blob/main/pandas/_testing/_warnings.py#L157)... |
2,970,350,606 | 61,227 | DOC Removed excessive Plotly links in ecosystem.md | closed | 2025-04-03T18:20:10 | 2025-04-03T18:41:29 | 2025-04-03T18:41:21 | https://github.com/pandas-dev/pandas/pull/61227 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61227 | https://github.com/pandas-dev/pandas/pull/61227 | star1327p | 1 | Removed excessive Plotly links in `ecosystem.md`.
- [ ] closes #xxxx (Replace xxxx with the GitHub issue number)
- [ ] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [ ] All [code checks passed](http... | [
"Docs"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks @star1327p "
] |
2,970,075,919 | 61,226 | BUG: Fix #61221: Exception with unstack(sort=False) and NA in index. | closed | 2025-04-03T16:05:18 | 2025-07-28T17:18:14 | 2025-07-28T17:18:14 | https://github.com/pandas-dev/pandas/pull/61226 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61226 | https://github.com/pandas-dev/pandas/pull/61226 | gsmll | 2 | - [ ✔️ ] closes #61221
- [✔️ ] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [✔️ ] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit... | [
"Stale"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"This pull request is stale because it has been open for thirty days with no activity. Please [update](https://pandas.pydata.org/pandas-docs/stable/development/contributing.html#updating-your-pull-request) and respond to this comment if you're still interested in working on this.",
"Thanks for the pull request, b... |
2,969,751,841 | 61,225 | BUG: Fix #57608: queries on categorical string columns in HDFStore.select() return unexpected results. | closed | 2025-04-03T14:15:29 | 2025-05-20T15:57:41 | 2025-05-20T15:57:34 | https://github.com/pandas-dev/pandas/pull/61225 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61225 | https://github.com/pandas-dev/pandas/pull/61225 | SofiaSM45 | 4 | In function __init__() of class Selection (pandas/core/io/pytables.py), the method self.terms.evaluate() was not returning the correct value for the where condition. The issue stemmed from the function convert_value() of class BinOp (pandas/core/computation/pytables.py), where the function searchedsorted() did not retu... | [
"IO HDF5"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"This pull request is stale because it has been open for thirty days with no activity. Please [update](https://pandas.pydata.org/pandas-docs/stable/development/contributing.html#updating-your-pull-request) and respond to this comment if you're still interested in working on this.",
"pre-commit.ci autofix",
"Reb... |
2,969,275,509 | 61,224 | ENH: Implement loading and dumping to and from YAML | closed | 2025-04-03T11:30:41 | 2025-04-03T15:12:32 | 2025-04-03T15:12:31 | https://github.com/pandas-dev/pandas/issues/61224 | true | null | null | acampove | 2 | ### Feature Type
- [x] Adding new functionality to pandas
- [ ] Changing existing functionality in pandas
- [ ] Removing existing functionality in pandas
### Problem Description
Hi,
I am nowadays mostly working with YAML and moved away from JSON, given that it has proven far superior in terms of userfriendlines ... | [
"Enhancement",
"Needs Triage"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"For your reference, I implemented it in my utilities library [here](https://github.com/acampove/dmu/tree/master?tab=readme-ov-file#dataframe-to-and-from-yaml) but this should be integrated into pandas itself.",
"Thanks for the suggestion, but this was suggested and rejected in https://github.com/pandas-dev/panda... |
2,969,235,408 | 61,223 | BUG: setting item to iterable with .at fails when column doesn't exist or has wrong dtype | open | 2025-04-03T11:15:33 | 2025-04-10T18:44:28 | null | https://github.com/pandas-dev/pandas/issues/61223 | true | null | null | jbogar | 6 | ### Pandas version checks
- [x] I have checked that this issue has not already been reported.
- [x] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas.
- [ ] I have confirmed this bug exists on the [main branch](https://pandas.pydata.org/docs/dev/ge... | [
"Bug",
"Indexing",
"Needs Discussion"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"The same errors happen using `.loc`.\n\nA workaround is specifying the column first:\n`df[\"C\"] = pd.Series()`",
"Looking at the [documentation ](https://pandas.pydata.org/docs/reference/api/pandas.DataFrame.at.html) it seems like this example does not show a bug, since it should throw a KeyError given there is... |
2,969,126,559 | 61,222 | BUG: Index name lost when using "resample" with pyarrow dtypes | closed | 2025-04-03T10:37:17 | 2025-04-07T16:55:10 | 2025-04-07T16:55:10 | https://github.com/pandas-dev/pandas/issues/61222 | true | null | null | mthiboust | 2 | ### Pandas version checks
- [x] I have checked that this issue has not already been reported.
- [x] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas.
- [ ] I have confirmed this bug exists on the [main branch](https://pandas.pydata.org/docs/dev/ge... | [
"Bug",
"Resample",
"Arrow"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"If it helps, I currently use this `safe_resample()` function as a temporary workaround:\n\n```python\nT = TypeVar(\"T\", pd.DataFrame, pd.Series)\n\n\nclass IndexPreservingResampler(Generic[T]):\n \"\"\"A resampler that preserves the index name of the input DataFrame or Series.\"\"\"\n\n def __init__(self, r... |
2,967,880,291 | 61,221 | BUG: Exception with `unstack(sort=False)` and NA in index | open | 2025-04-03T00:54:08 | 2025-08-15T14:31:53 | null | https://github.com/pandas-dev/pandas/issues/61221 | true | null | null | jlumpe | 3 | ### Pandas version checks
- [x] I have checked that this issue has not already been reported.
- [x] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas.
- [ ] I have confirmed this bug exists on the [main branch](https://pandas.pydata.org/docs/dev/ge... | [
"Bug",
"Reshaping",
"ExtensionArray"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"take\n",
"Thanks for reporting. Confirmed on main. PRs to fix are welcome.",
"take"
] |
2,967,331,184 | 61,220 | ENH: Create infrastructure for translations | closed | 2025-04-02T19:19:57 | 2025-05-12T07:46:13 | 2025-05-12T07:46:13 | https://github.com/pandas-dev/pandas/pull/61220 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61220 | https://github.com/pandas-dev/pandas/pull/61220 | melissawm | 9 | Hi all,
This PR is a proposal for adding the translations infrastructure to the pandas web page.
Following the discussion in #56301, we (a group of folks working on the Scientific Python grant) have been working to set up infrastructure and translate the contents of the pandas web site. As of this moment, we hav... | [
"Web"
] | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | [
"Thanks for starting this @melissawm \r\n\r\n1. Reviewing the feedback in the original issue https://github.com/pandas-dev/pandas/issues/56301, it appears the pandas core devs (including myself) would prefer translations to live outside the core repo. Am I understanding correctly, that the `pt` directory, or any ot... |
2,967,254,781 | 61,219 | Fix #58421: Index[timestamp[pyarrow]].union with itself return object type | closed | 2025-04-02T18:45:22 | 2025-05-15T16:11:15 | 2025-05-15T16:11:15 | https://github.com/pandas-dev/pandas/pull/61219 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61219 | https://github.com/pandas-dev/pandas/pull/61219 | afonso-antunes | 2 | - [X] closes #58421
- [X] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [ ] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).
- [X]... | [] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"### Note on test failures\r\nSome tests are failing because they expect the old behavior where ``pd.concat(..., keys=...)`` would return an ``Index`` of tuples with ``dtype=object``.\r\n\r\nThis PR intentionally changes that behavior to **preserve the dtype of the original index** (e.g., ArrowDtype) and produce a ... |
2,966,874,023 | 61,218 | QST: Should the absence of tzdata package affect the performance in any way ? | closed | 2025-04-02T15:53:10 | 2025-08-05T17:04:53 | 2025-08-05T17:04:53 | https://github.com/pandas-dev/pandas/issues/61218 | true | null | null | sdg002 | 6 | ### Research
- [x] I have searched the [[pandas] tag](https://stackoverflow.com/questions/tagged/pandas) on StackOverflow for similar questions.
- [x] I have asked my usage related question on [StackOverflow](https://stackoverflow.com).
### Link to question on StackOverflow
https://stackoverflow.com/search?page=3&... | [
"Usage Question",
"Needs Info"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Sorry. SFO will not allow me to ask any more questions. ",
"`tzdata` is used as an alternative timezone library compared to `pytz`. It's hard to answer performance implications without knowing what they are.\n\nNote that pandas 1.5 is no longer supported and `tzdata` is a required dependency as of pandas 2.0",
... |
2,966,525,309 | 61,217 | BUG: unstack incorrectly reshuffles data when sort=False | closed | 2025-04-02T14:12:08 | 2025-05-15T15:18:34 | 2025-04-03T02:51:31 | https://github.com/pandas-dev/pandas/issues/61217 | true | null | null | wahsmail | 4 | ### Pandas version checks
- [x] I have checked that this issue has not already been reported.
- [x] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas.
- [x] I have confirmed this bug exists on the [main branch](https://pandas.pydata.org/docs/dev/ge... | [
"Bug",
"Needs Triage"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"take",
"This seems to work properly in the main branch of pandas. ",
"Confirmed that this bug no longer exists on main. Closing.",
"I came across the same issue on the latest version of pandas, but could also confirm it works fine on main, which is encouraging. It will be good to see the fix released. It is ... |
2,965,915,343 | 61,216 | BUG: OverflowError when fillna on DataFrame with a pd.Timestamp (#61208) | closed | 2025-04-02T10:16:22 | 2025-04-14T16:59:05 | 2025-04-14T16:58:58 | https://github.com/pandas-dev/pandas/pull/61216 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61216 | https://github.com/pandas-dev/pandas/pull/61216 | PedroM4rques | 1 | - Now correctly raises OutOfBoundsDatetime
- Added test_fillna_out_of_bounds_datetime()
- [x] closes #61208
- [x] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [x] All [code checks passed](https://... | [
"Bug",
"Missing-data",
"Error Reporting",
"Timestamp"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks @PedroM4rques "
] |
2,965,310,744 | 61,215 | DOC: Fix ES01 for pandas.api.extensions.ExtensionDtype | closed | 2025-04-02T06:23:50 | 2025-04-02T16:12:41 | 2025-04-02T16:12:35 | https://github.com/pandas-dev/pandas/pull/61215 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61215 | https://github.com/pandas-dev/pandas/pull/61215 | tuhinsharma121 | 1 | fixes
```
pandas.api.extensions.ExtensionDtype ES01 | [
"Docs"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks @tuhinsharma121 "
] |
2,965,010,194 | 61,214 | Restrict clipping of DataFrame.corr only when cov=False | closed | 2025-04-02T02:37:04 | 2025-04-03T21:55:32 | 2025-04-03T21:55:24 | https://github.com/pandas-dev/pandas/pull/61214 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61214 | https://github.com/pandas-dev/pandas/pull/61214 | j-hendricks | 3 | Closes #61154 `DataFrame.corr` was clipped between `-1` and `1` to handle numerical precision errors. However, this was done regardless of whether `cov` equals `True` or `False`, and should instead only be done when `cov=False`.
- [x] closes #61154 (Replace xxxx with the GitHub issue number)
- [x] [Tests added and... | [
"cov/corr"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"@mroeschke here is my pull request for fixing the `dataframe.corr` issue. Thanks!",
"Thanks! Would you be able to add new unit test that covers this? It seems like we didn't have one that hit this edge case previously.\r\n\r\nI think no release note is necessary, since the original one made clear it's only for `... |
2,964,980,317 | 61,213 | BUG: DataFrame.corr clips values when cov=True | closed | 2025-04-02T02:20:50 | 2025-04-02T02:38:39 | 2025-04-02T02:38:39 | https://github.com/pandas-dev/pandas/issues/61213 | true | null | null | j-hendricks | 0 | ### Pandas version checks
- [x] I have checked that this issue has not already been reported.
- [x] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas.
- [x] I have confirmed this bug exists on the [main branch](https://pandas.pydata.org/docs/dev/ge... | [
"Bug",
"Needs Triage"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [] |
2,964,817,507 | 61,212 | BUG: OverflowError when fillna on DataFrame with a pd.Timestamp (#61208) | closed | 2025-04-02T00:08:59 | 2025-04-02T09:07:20 | 2025-04-02T09:07:19 | https://github.com/pandas-dev/pandas/pull/61212 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61212 | https://github.com/pandas-dev/pandas/pull/61212 | PedroM4rques | 1 | - [x] closes #61208
- [x] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [ ] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).
- [x]... | [] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"I did not open this PR correctly, I'll open another ASAP"
] |
2,964,763,684 | 61,211 | BUG: Preserve extension dtypes in MultiIndex during concat (#58421) | closed | 2025-04-01T23:19:47 | 2025-04-02T18:26:52 | 2025-04-02T18:26:52 | https://github.com/pandas-dev/pandas/pull/61211 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61211 | https://github.com/pandas-dev/pandas/pull/61211 | afonso-antunes | 0 | - [X] closes #58421
- [X] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [ ] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).
- [X]... | [] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [] |
2,963,918,215 | 61,210 | ENH: Add ignore_empty and ignore_all_na arguments to pd.concat | open | 2025-04-01T16:11:39 | 2025-07-15T20:11:54 | null | https://github.com/pandas-dev/pandas/issues/61210 | true | null | null | sergei3000 | 3 | ### Feature Type
- [ ] Adding new functionality to pandas
- [x] Changing existing functionality in pandas
- [ ] Removing existing functionality in pandas
### Problem Description
I'd like this warning of `pd.concat()` be solved with an argument
```
FutureWarning: The behavior of DataFrame concatenation with empty ... | [
"Enhancement",
"Needs Triage",
"Closing Candidate"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"take",
"In main this is already depreciated, someone else can take over if wanted.",
"Any updates on this issue? If possible, I'd like to work on it if it is approved."
] |
2,960,860,396 | 61,209 | ENH: Consistent NA handling in `unique()`, and `nunique()` | open | 2025-03-31T15:36:49 | 2025-04-08T21:31:40 | null | https://github.com/pandas-dev/pandas/issues/61209 | true | null | null | olek-osikowicz | 3 | ### Feature Type
- [ ] Adding new functionality to pandas
- [x] Changing existing functionality in pandas
- [ ] Removing existing functionality in pandas
### Problem Description
Currently `Series.nunique` has a default parameter `dropna=True`.
However `Series.unique` does not accept the `dropna` the parameter.
T... | [
"Enhancement",
"Algos",
"Needs Discussion"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"take",
"I think it should be `dropna=True` by default, so your alternative solution, i.e. add `dropna` to `Series.unique` (with default set to `True`) makes more sense to me. cc: @rhshadrach ",
"Related: https://github.com/pandas-dev/pandas/pull/53094\n\nWhile I would prefer pandas not dropping NA values by de... |
2,960,818,034 | 61,208 | BUG: OverflowError when fillna on DataFrame with a pd.Timestamp | closed | 2025-03-31T15:19:29 | 2025-04-14T16:59:00 | 2025-04-14T16:59:00 | https://github.com/pandas-dev/pandas/issues/61208 | true | null | null | thecurve8 | 3 | ### Pandas version checks
- [x] I have checked that this issue has not already been reported.
- [x] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas.
- [x] I have confirmed this bug exists on the [main branch](https://pandas.pydata.org/docs/dev/ge... | [
"Bug",
"Error Reporting",
"Timestamp"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks for the report! Confirmed on main, part of the stack has the error:\n\n> pandas._libs.tslibs.np_datetime.OutOfBoundsDatetime: Cannot cast 0001-01-01 00:00:00 to unit='ns' without overflow.\n\nwhich I believe should be what is raised here. Further investigations and PRs to fix are welcome!",
"take",
"Hi ... |
2,959,825,885 | 61,207 | Fix #60494: query doesn't work on DataFrame integer column names | closed | 2025-03-31T08:36:24 | 2025-04-01T16:50:23 | 2025-04-01T16:50:16 | https://github.com/pandas-dev/pandas/pull/61207 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61207 | https://github.com/pandas-dev/pandas/pull/61207 | David-msggc | 1 | - [x] closes #60494
- [x] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [ ] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).
- [x]... | [
"expressions"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks @David-msggc "
] |
2,959,787,102 | 61,206 | BUG: round on object columns no longer raises a TypeError | closed | 2025-03-31T08:18:12 | 2025-05-21T00:33:35 | 2025-05-21T00:33:34 | https://github.com/pandas-dev/pandas/issues/61206 | true | null | null | MT407 | 4 | ### Pandas version checks
- [x] I have checked that this issue has not already been reported.
- [x] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas.
- [ ] I have confirmed this bug exists on the [main branch](https://pandas.pydata.org/docs/dev/ge... | [
"Bug",
"Regression",
"Error Reporting",
"Numeric Operations"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Result of a git bisect points at https://github.com/pandas-dev/pandas/pull/56767; cc @phofl",
"take\n",
"take"
] |
2,959,776,688 | 61,205 | Bump pypa/cibuildwheel from 2.23.1 to 2.23.2 | closed | 2025-03-31T08:13:04 | 2025-03-31T17:22:58 | 2025-03-31T17:22:55 | https://github.com/pandas-dev/pandas/pull/61205 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61205 | https://github.com/pandas-dev/pandas/pull/61205 | dependabot[bot] | 0 | Bumps [pypa/cibuildwheel](https://github.com/pypa/cibuildwheel) from 2.23.1 to 2.23.2.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/pypa/cibuildwheel/releases">pypa/cibuildwheel's releases</a>.</em></p>
<blockquote>
<h2>v2.23.2</h2>
<ul>
<li>🐛 Workaround an issue with pyod... | [
"Build",
"CI",
"Dependencies"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [] |
2,959,329,293 | 61,204 | BUG: DataFrame.min with skipna=True raises TypeError when column contains np.nan and datetime.date | open | 2025-03-31T02:39:29 | 2025-04-27T12:00:06 | null | https://github.com/pandas-dev/pandas/issues/61204 | true | null | null | tanjt107 | 4 | ### Pandas version checks
- [x] I have checked that this issue has not already been reported.
- [x] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas.
- [x] I have confirmed this bug exists on the [main branch](https://pandas.pydata.org/docs/dev/ge... | [
"Bug",
"Missing-data",
"Reduction Operations"
] | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks for the report. This happens on any `object` dtype data; I am wondering if pandas should handle object blocks specially where we filter instead of fillna values. Further investigations and PRs to fix are welcome!",
"take",
"Confirmed on main, it looks like https://github.com/pandas-dev/pandas/blob/0e0ba... |
2,959,000,442 | 61,203 | BUG: fix to_json on period | closed | 2025-03-30T17:35:03 | 2025-07-28T17:18:48 | 2025-07-28T17:18:48 | https://github.com/pandas-dev/pandas/pull/61203 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61203 | https://github.com/pandas-dev/pandas/pull/61203 | xiaohuanlin | 4 | - [x] closes #55490 (Replace xxxx with the GitHub issue number)
- [x] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [x] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/co... | [
"Stale"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Does anyone else want to review it?",
"This pull request is stale because it has been open for thirty days with no activity. Please [update](https://pandas.pydata.org/pandas-docs/stable/development/contributing.html#updating-your-pull-request) and respond to this comment if you're still interested in working on ... |
2,958,672,916 | 61,202 | DOC: Simplify pandas theme footer by removing social buttons and stre… | closed | 2025-03-30T05:21:34 | 2025-03-30T22:03:33 | 2025-03-30T22:03:33 | https://github.com/pandas-dev/pandas/pull/61202 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61202 | https://github.com/pandas-dev/pandas/pull/61202 | ascender1729 | 0 | I'll help you complete the pull request form with the appropriate information. Here's what you should fill in:
Title:
```
DOC: Simplify pandas theme footer
```
Description:
```markdown
This PR simplifies the pandas theme footer by:
- Removing social media buttons (which are already present in the navigation... | [
"Docs",
"Web"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [] |
2,958,643,966 | 61,201 | Fix missing blank line in DataFrame.round docstring (PEP 257 style) | closed | 2025-03-30T03:48:16 | 2025-03-30T17:11:29 | 2025-03-30T17:11:29 | https://github.com/pandas-dev/pandas/pull/61201 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61201 | https://github.com/pandas-dev/pandas/pull/61201 | cureprotocols | 1 | This PR fixes a minor style issue in the docstring of `DataFrame.round()`.
### What Changed:
- Adds a missing blank line before the closing triple quotes (`"""`)
- Ensures compliance with PEP 257 and pandas' internal docstring style guidelines
- Helps maintain clean parsing for automated doc tools and improves re... | [
"Docs"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Indeed, pre-commit identifies this as an issue. Closing."
] |
2,958,584,423 | 61,200 | BUG: date comparison fails when series is all pd.NaT values | closed | 2025-03-30T00:45:01 | 2025-04-18T06:46:18 | 2025-04-15T12:42:00 | https://github.com/pandas-dev/pandas/pull/61200 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61200 | https://github.com/pandas-dev/pandas/pull/61200 | Mohit-Kundu | 9 | - [x] closes #61188 (Replace xxxx with the GitHub issue number)
- [x] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [x] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/co... | [
"Bug",
"Datetime",
"Missing-data"
] | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | [
"pre-commit.ci autofix",
"@rhshadrach I just incorporated the changes! Please let me know if everything looks okay.",
"> lgtm\r\n\r\nGood to hear! Thank you for guidance :)",
"Looks like this PR re-added the 1.3MB Pandas Cookbook jpeg into main. Looks like we should hard revert this commit? cc @datapythonist... |
2,958,559,547 | 61,199 | BUG: Fix Series comparison fails when index dtypes differ (object vs string) (#61099) | closed | 2025-03-29T23:50:02 | 2025-04-01T23:28:12 | 2025-04-01T23:28:12 | https://github.com/pandas-dev/pandas/pull/61199 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61199 | https://github.com/pandas-dev/pandas/pull/61199 | MayurKishorKumar | 4 | - [x] closes #61099
- [x] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [x] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).
- [ ]... | [] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"@MayurKishorKumar - looks like your environment got added to your commit.",
"Oh shoot, my bad! I’ll fix that right away. Thanks for catching it!",
"Hi @rhshadrach 👋\r\n\r\nI’m working on fixing [[#61099](https://github.com/pandas-dev/pandas/issues/61099)] and ran into a failure in `test_mixed_col_index_dtype`... |
2,958,390,687 | 61,198 | BUG: Fix AttributeError in pd.eval for method calls on binary operations | closed | 2025-03-29T18:36:26 | 2025-03-31T16:52:42 | 2025-03-31T16:52:36 | https://github.com/pandas-dev/pandas/pull/61198 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61198 | https://github.com/pandas-dev/pandas/pull/61198 | myenugula | 1 | - [x] closes #61175
- [x] [Tests added and passed] if fixing a bug or adding a new feature.
- [x] All [code checks passed]
- [x] Added [type annotations] to new arguments/methods/functions.
- [x] Added an entry in the latest `doc/source/whatsnew/vX.X.X.rst` file if fixing a bug or adding a new feature. | [
"Bug",
"expressions"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks @myenugula "
] |
2,958,215,361 | 61,197 | ENH: Add a new parameter to pandas.read_csv #61172 | closed | 2025-03-29T16:29:35 | 2025-03-29T18:34:44 | 2025-03-29T18:34:44 | https://github.com/pandas-dev/pandas/pull/61197 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61197 | https://github.com/pandas-dev/pandas/pull/61197 | BahramF73 | 1 | - [x] closes #61172
- [ ] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [ ] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).
- [ ]... | [] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks for the PR, but as discussed in https://github.com/pandas-dev/pandas/issues/61172#issuecomment-2749363849 there probably isn't much appetite for this feature so closing this PR as won't implement"
] |
2,957,335,175 | 61,196 | BUG: `to_datetime()` warns unnecessarily that format cannot be inferred | closed | 2025-03-28T21:49:48 | 2025-03-31T01:00:52 | 2025-03-29T12:30:42 | https://github.com/pandas-dev/pandas/issues/61196 | true | null | null | metazoic | 3 | ### Pandas version checks
- [x] I have checked that this issue has not already been reported.
- [x] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas.
- [ ] I have confirmed this bug exists on the [main branch](https://pandas.pydata.org/docs/dev/ge... | [
"Bug",
"Datetime",
"Warnings"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"This seems to be fixed in main",
"I've run your reproducible locally and it didn't give me any user warning.\n\n<details>\n <summary>Installed Versions</summary>\n\n```python\n\nINSTALLED VERSIONS\n------------------\ncommit : 543680dcd9af5e4a9443d54204ec21e801652252\npython : 3.11... |
2,956,990,529 | 61,195 | DOC: User Guide Page on user-defined functions | closed | 2025-03-28T19:15:48 | 2025-05-19T13:11:32 | 2025-05-18T19:31:46 | https://github.com/pandas-dev/pandas/pull/61195 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61195 | https://github.com/pandas-dev/pandas/pull/61195 | arthurlw | 10 | - [x] closes #61126
- [ ] ~[Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature~
- [ ] ~All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).~
... | [
"Docs",
"Apply"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Currently writing this, so I would appreciate any feedback on it!",
"Hi @rhshadrach thanks for the feedback! I agree with you and will push updates soon",
"/preview",
"Website preview of this PR available at: https://pandas.pydata.org/preview/pandas-dev/pandas/61195/",
"@arthurlw I generated a preview of t... |
2,956,720,128 | 61,194 | ENH: adding a filter (and bold) to header when writing to excel | open | 2025-03-28T17:13:59 | 2025-05-11T09:01:06 | null | https://github.com/pandas-dev/pandas/issues/61194 | true | null | null | simonaubertbd | 11 | ### Feature Type
- [x] Adding new functionality to pandas
- [ ] Changing existing functionality in pandas
- [ ] Removing existing functionality in pandas
### Problem Description
Hello,
One of the things I always do when opening an excel file is adding filter on header. Just like that
![Image](https://github.com... | [
"Enhancement",
"IO Excel"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks for the request. Assuming all of our current engines can support this, this seems like a common desire; I'm positive here. I would recommend the argument:\n\n autofilter: bool | list-like = False\n\nallowing the user to control which index/columns get filters. However, we'd need to workout how this inter... |
2,955,473,231 | 61,193 | BUG: Fix pyarrow categoricals not working for pivot and multiindex | closed | 2025-03-28T09:10:56 | 2025-04-14T17:00:11 | 2025-04-14T17:00:04 | https://github.com/pandas-dev/pandas/pull/61193 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61193 | https://github.com/pandas-dev/pandas/pull/61193 | robin-mader-bis | 3 | - [X] closes #53051
- [x] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [x] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).
- [x]... | [
"Reshaping",
"Arrow"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Hey @mroeschke,\r\nThanks for the Review! All comments should be adressed. Could you have another look if everything looks good?",
"Hey @mroeschke,\r\nThanks again for the review. All feedback should be addressed. Can you have another look?",
"Thanks @robin-mader-bis "
] |
2,954,866,743 | 61,192 | Feature/guepard pandas | closed | 2025-03-28T02:43:32 | 2025-03-28T02:44:07 | 2025-03-28T02:44:07 | https://github.com/pandas-dev/pandas/pull/61192 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61192 | https://github.com/pandas-dev/pandas/pull/61192 | kobbinour13 | 0 | - [ ] closes #xxxx (Replace xxxx with the GitHub issue number)
- [ ] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [ ] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/con... | [] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [] |
2,954,549,901 | 61,191 | BUG: Boolean selection edge case. | open | 2025-03-27T22:27:30 | 2025-04-08T23:28:22 | null | https://github.com/pandas-dev/pandas/issues/61191 | true | null | null | ptth222 | 2 | ### Pandas version checks
- [x] I have checked that this issue has not already been reported.
- [x] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas.
- [ ] I have confirmed this bug exists on the [main branch](https://pandas.pydata.org/docs/dev/ge... | [
"Bug",
"Indexing",
"Needs Discussion"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks for the report. First a case where we do not deal with empty objects:\n\n```python\ndf1 = pd.DataFrame({\"a\": [1, 1, 2], \"b\": [3, 4, 5]})\nmask = pd.Series({\"a\": True})\ndf1[mask]\n# pandas.errors.IndexingError: Unalignable boolean Series provided as indexer\n```\n\nI do not think there is an appetite ... |
2,954,061,898 | 61,190 | Update guidance on CFLAGS | closed | 2025-03-27T18:25:45 | 2025-03-28T20:12:33 | 2025-03-28T20:12:26 | https://github.com/pandas-dev/pandas/pull/61190 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61190 | https://github.com/pandas-dev/pandas/pull/61190 | WillAyd | 1 | I recently discovered that setting the flags like this also interferes with Meson's ability to look up a caching tool like ccache or sccache. Rather than appending to these, I think its best to just unset them entirely while developing | [
"Docs"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks @WillAyd "
] |
2,953,485,694 | 61,189 | BUG: \0 null bytes in `str` not preserved in `pandas.CategoricalIndex` or `pandas.MultiIndex` | closed | 2025-03-27T15:38:25 | 2025-03-28T20:44:48 | 2025-03-28T20:44:37 | https://github.com/pandas-dev/pandas/issues/61189 | true | null | null | dutc | 3 | ### Pandas version checks
- [x] I have checked that this issue has not already been reported.
- [x] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas.
- [x] I have confirmed this bug exists on the [main branch](https://pandas.pydata.org/docs/dev/ge... | [
"Bug",
"Algos",
"Strings"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"To help further pinpoint, it seems that the deeper issue may lie within `pandas.factorize`\n\n```python\nimport pandas as pd\nprint(f'{pd.__version__ = }') # 2.2.3\n\nentities = ['abc', 'abc\\0']\ns = pd.Series(entities)\n\nassert s.tolist() == entities\n\nprint(\n # incorrect unique value detection\n s.fact... |
2,952,212,798 | 61,188 | BUG: date comparison fails when series is all pd.NaT values | closed | 2025-03-27T09:24:05 | 2025-04-15T12:42:01 | 2025-04-15T12:42:01 | https://github.com/pandas-dev/pandas/issues/61188 | true | null | null | imrehg | 5 | ### Pandas version checks
- [x] I have checked that this issue has not already been reported.
- [x] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas.
- [x] I have confirmed this bug exists on the [main branch](https://pandas.pydata.org/docs/dev/ge... | [
"Bug",
"Datetime",
"good first issue"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks for the report! It looks like in this case `s.dt.date` should be returning object dtype, but it is instead returning `datetime64[s]`. PRs to fix are welcome!",
"take",
"Hi @rhshadrach ,\n\nCould you please take a look at my latest commit? I’d appreciate your feedback to ensure everything looks good.\n\n... |
2,951,368,673 | 61,187 | BUG: DataFrame.min raises TypeError when column contains mixed types (e.g., np.nan and datetime) | closed | 2025-03-27T03:16:47 | 2025-04-01T01:56:35 | 2025-03-31T02:16:58 | https://github.com/pandas-dev/pandas/issues/61187 | true | null | null | tanjt107 | 5 | ### Pandas version checks
- [x] I have checked that this issue has not already been reported.
- [x] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas.
- [x] I have confirmed this bug exists on the [main branch](https://pandas.pydata.org/docs/dev/ge... | [
"Bug",
"Missing-data",
"Needs Info",
"Reduction Operations"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks for the report. I am not seeing this issue on the main branch of pandas. You've checked the box that you've confirmed this bug exists there, is that the case?",
"This issue no longer occurs after restarting my computer. Therefore, I am closing the issue.",
"@rhshadrach I’ve fixed the example and reopene... |
2,951,251,444 | 61,186 | BUG: engine calamine lost 0 when read_excel from vlookup cell | closed | 2025-03-27T01:57:03 | 2025-06-19T20:51:54 | 2025-06-19T20:51:54 | https://github.com/pandas-dev/pandas/issues/61186 | true | null | null | ryjfgjl | 6 | ### Pandas version checks
- [x] I have checked that this issue has not already been reported.
- [x] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas.
- [ ] I have confirmed this bug exists on the [main branch](https://pandas.pydata.org/docs/dev/ge... | [
"Bug",
"IO Excel",
"Closing Candidate",
"Upstream issue"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks for the report. Are you able to share the excel file (preferably without the vlookups) or code to generate the excel file?",
"import pandas as pd\n\nfile = r'C:\\Users\\ryjfgjl\\Desktop\\test.xlsx'\ndf_without_vlookup = pd.read_excel(file, engine='calamine', sheet_name='Sheet1', dtype=object)\nprint(df_wi... |
2,950,800,166 | 61,185 | ENH: Reimplement DataFrame.lookup | closed | 2025-03-26T21:13:46 | 2025-06-02T17:00:29 | 2025-06-02T17:00:28 | https://github.com/pandas-dev/pandas/pull/61185 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61185 | https://github.com/pandas-dev/pandas/pull/61185 | stevenae | 19 | - [x] closes #40140
- [x] [Tests added and passed]
- [x] All [code checks passed]
- [x] Added [type annotations]
- [x] Added an entry in the latest `doc/source/whatsnew/vX.X.X.rst` file if fixing a bug or adding a new feature.
Optimization notes:
Most important change is removal of:
`if not self._is_mixed_type... | [
"Enhancement",
"Indexing",
"Stale"
] | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | [
"I tested out three variants of subsetting the dataframe before converting to numpy:\r\n- subset column and row\r\n- subset only column\r\n- subset column, then subset row if types are mixed\r\n\r\nOptimization testing script:\r\n\r\n```python\r\nimport pandas as pd\r\nimport numpy as np\r\nimport timeit\r\nnp.rand... |
2,950,256,151 | 61,184 | DOC: Add details of dropna in DataFrame.pivot_table | closed | 2025-03-26T16:55:56 | 2025-04-03T01:01:37 | 2025-04-02T21:28:16 | https://github.com/pandas-dev/pandas/pull/61184 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61184 | https://github.com/pandas-dev/pandas/pull/61184 | it176131 | 4 | - [x] closes #61113
- [x] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [x] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).
- [x... | [
"Docs",
"Missing-data",
"Reshaping"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Which `doc/source/whatsnew/vX.X.X.rst` file should I edit? `v2.3.0.rst`?",
"~@rhshadrach it looks like two warnings are raised because of the bulleted list formatting: ([1](https://github.com/pandas-dev/pandas/actions/runs/14161907429/job/39668656803?pr=61184#step:8:61)), ([2](https://github.com/pandas-dev/panda... |
2,950,220,946 | 61,183 | REGR: Interpolate with method=index | closed | 2025-03-26T16:40:24 | 2025-03-29T19:32:13 | 2025-03-29T18:01:32 | https://github.com/pandas-dev/pandas/pull/61183 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61183 | https://github.com/pandas-dev/pandas/pull/61183 | rhshadrach | 2 | - [x] closes #61122 (Replace xxxx with the GitHub issue number)
- [ ] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [ ] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/co... | [
"Bug",
"Missing-data",
"Regression"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Looks like the resample interpolate doctests are failing https://github.com/pandas-dev/pandas/actions/runs/14088933670/job/39460360510?pr=61183",
"Thanks @rhshadrach "
] |
2,950,210,565 | 61,182 | BUG: Negation of `.str.isnumeric()` changes `dtype` when `pd.NA` is present | closed | 2025-03-26T16:35:55 | 2025-04-04T09:59:28 | 2025-04-04T09:59:28 | https://github.com/pandas-dev/pandas/issues/61182 | true | null | null | noahblakesmith | 9 | ### Pandas version checks
- [x] I have checked that this issue has not already been reported.
- [x] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas.
- [x] I have confirmed this bug exists on the [main branch](https://pandas.pydata.org/docs/dev/ge... | [
"Bug",
"Missing-data",
"Strings",
"Needs Discussion",
"Closing Candidate"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks for the report! Your input to `isnumeric` is object dtype, and so you get object dtype back. Thus the results are Python's `True` and `False`. The behavior pandas displays here is then consistent with the operations on the Python objects:\n\n```python\nprint(~True)\n# -2\n```\n\nIf you would like Kleene-log... |
2,949,306,759 | 61,181 | update offsets.pyx to fix #60647 | closed | 2025-03-26T11:51:20 | 2025-04-28T18:23:34 | 2025-04-28T18:23:34 | https://github.com/pandas-dev/pandas/pull/61181 | true | https://api.github.com/repos/pandas-dev/pandas/pulls/61181 | https://github.com/pandas-dev/pandas/pull/61181 | kangqiwang | 4 | - [x ] closes #60647 (Replace xxxx with the GitHub issue number)
- [ ] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [ ] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/c... | [] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Sorry for not adding a test case for this. I'll set it up once I get home and can work on my PC—my current laptop is too slow to handle the full testing environment.\r\n",
"Also, I noticed the unit tests failed. Again, I will fix them once I get home.",
"Thanks for working on this fix for #60647!\r\n\r\nThis c... |
2,949,189,167 | 61,180 | BUG: Performance issue with fillna() after merging DataFrames | open | 2025-03-26T11:02:00 | 2025-03-26T17:17:56 | null | https://github.com/pandas-dev/pandas/issues/61180 | true | null | null | sjfakharian | 2 | ### Pandas version checks
- [x] I have checked that this issue has not already been reported.
- [x] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas.
- [ ] I have confirmed this bug exists on the [main branch](https://pandas.pydata.org/docs/dev/ge... | [
"Missing-data",
"Performance",
"Needs Info"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"> When using `fillna()` after merging DataFrames, unexpected behavior and performance issues occur.\n\nThanks for the report. You should be seeing a `ChainedAssignmentError` due to the use of `inplace=True`. Changing the code to not use this:\n\n```python\nmerged_df['Name'] = merged_df['Name'].fillna('Unknown')\nm... |
2,948,702,201 | 61,179 | BUG: replace with np.nan unexpectedly converts pd.Timestamp to pd.NaT | closed | 2025-03-26T07:57:42 | 2025-03-26T19:27:17 | 2025-03-26T19:26:41 | https://github.com/pandas-dev/pandas/issues/61179 | true | null | null | tanjt107 | 1 | ### Pandas version checks
- [x] I have checked that this issue has not already been reported.
- [x] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas.
- [x] I have confirmed this bug exists on the [main branch](https://pandas.pydata.org/docs/dev/ge... | [
"Bug",
"Missing-data",
"Timestamp"
] | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | [
"Thanks for the report!\n\n> This behavior differs from pandas 1.1.5, where the replaced values were np.nan as expected.\n\nIf we were to store `np.nan`, I think that the column dtype would have to be object. Assuming that is the case, this would be less performant and not suppor the `.dt` namespace that provides m... |
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