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3,083,137,230
61,478
BUG: to_latex does not escape % with percent formatter
closed
2025-05-22T12:02:17
2025-05-30T18:24:36
2025-05-30T18:24:32
https://github.com/pandas-dev/pandas/issues/61478
true
null
null
stertingen
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 LaTeX" ]
0
0
0
0
0
0
0
0
[ "Boiled it down to the implementation of `_maybe_wrap_formatter`.\nIt applies the escape function before the formatting function (adding the % sign).\nTechnically, the formatter, the decimals, the thousands and the na_rep could introduce symbols to the string which should probably be escaped.\nNot sure why the the ...
3,082,527,781
61,477
BUG: Pandas concat raises RuntimeWarning: '<' not supported between instances of 'int' and 'tuple', sort order is undefined for incomparable objects with multilevel columns
open
2025-05-22T08:33:16
2025-05-22T08:33:16
null
https://github.com/pandas-dev/pandas/issues/61477
true
null
null
ButteryPaws
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
[]
3,082,247,813
61,476
DOC: Improve DateOffset docstring with constructor and examples (#52431)
closed
2025-05-22T06:45:30
2025-06-30T18:18:47
2025-06-30T18:18:47
https://github.com/pandas-dev/pandas/pull/61476
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61476
https://github.com/pandas-dev/pandas/pull/61476
ericzhihuang
3
Updates the docstring for the `DateOffset` class in `offsets.pyx`. Changes: - Added a constructor signature and parameter documentation This addresses part of issue #52431 (documentation improvements for offset constructors).
[ "Docs", "Frequency", "Stale" ]
0
0
0
0
0
0
0
0
[ "Thanks for the contribution @ericzhihuang, but I don't understand the changes here. This docstring already has examples and see also sections, you are adding new ones in the middle of the description.\r\n\r\nCan you have a look, make sure that the docstring makes sense as a whole, and also check that the CI is hap...
3,081,509,955
61,475
BUG: More Indicative Error when pd.melt with duplicate columns
closed
2025-05-21T22:01:23
2025-05-30T16:43:56
2025-05-30T16:43:56
https://github.com/pandas-dev/pandas/issues/61475
true
null
null
James-Lee-998
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", "Reshaping", "Error Reporting", "good first issue" ]
0
0
0
0
0
0
0
0
[ "Thanks for the report, confirmed on main. Agreed we should check and raise a more understandable error when there are duplicate columns. PR to fix is welcome!", "take" ]
3,081,300,105
61,474
BUG: dataframe.to_csv calls defauly numpy to_string function, resulting in
closed
2025-05-21T20:09:11
2025-05-23T17:28:19
2025-05-23T17:28:18
https://github.com/pandas-dev/pandas/issues/61474
true
null
null
mtscott321
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", "IO CSV", "Closing Candidate" ]
1
0
0
0
0
0
0
0
[ "Thanks for the report. I think you're asking for pandas to change the `__str__` behavior of a Python object. I'm negative on this, it is up to the user to control.", "take", "Agreed, especially since `repr`/IO writer support for nested values is not well supported generally and discouraged. Closing" ]
3,081,103,616
61,473
BUG: assert_frame_equal(check_dtype=False) fails when comparing two DFs containing pd.NA that only differ in dtype (object vs Int32)
open
2025-05-21T18:35:56
2025-08-11T11:45:12
null
https://github.com/pandas-dev/pandas/issues/61473
true
null
null
michiel-de-muynck
14
### 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", "Testing", "good first issue", "ExtensionArray" ]
2
0
0
0
0
0
0
0
[ "Thanks for the report, this would pass if when converting the EA to a NumPy array we cast to object dtype. I haven't looked to see if this might cause issues in other cases. Since this is aimed at tests, I'm wondering if changing to object dtype is okay here.\n\ncc @jbrockmendel @mroeschke for any thoughts.", ">...
3,080,730,686
61,472
Backport PR #61399: BUG: round on object columns no longer raises a TypeError
closed
2025-05-21T15:56:04
2025-05-21T17:06:19
2025-05-21T17:06:16
https://github.com/pandas-dev/pandas/pull/61472
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61472
https://github.com/pandas-dev/pandas/pull/61472
mroeschke
0
xref https://github.com/pandas-dev/pandas/pull/61399
[ "Error Reporting" ]
0
0
0
0
0
0
0
0
[]
3,080,554,537
61,471
DOC: Improve lookup documentation
closed
2025-05-21T15:04:30
2025-06-02T16:57:16
2025-06-02T16:57:09
https://github.com/pandas-dev/pandas/pull/61471
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61471
https://github.com/pandas-dev/pandas/pull/61471
stevenae
2
- [ ] closes #40140 - [ ] [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", "Indexing" ]
0
0
0
0
0
0
0
0
[ "Addressed your concerns! If you have time for a review.\r\n\r\nOn Wed, May 21, 2025, 4:33 PM Richard Shadrach ***@***.***>\r\nwrote:\r\n\r\n> ***@***.**** requested changes on this pull request.\r\n>\r\n> No strong opposition to having both functions, but the performance gain of\r\n> the _het version does not seem...
3,079,915,886
61,470
DOC: Restructure and expand UDF page
closed
2025-05-21T11:34:50
2025-05-27T15:15:22
2025-05-27T15:15:22
https://github.com/pandas-dev/pandas/pull/61470
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61470
https://github.com/pandas-dev/pandas/pull/61470
datapythonista
3
I changed the order in which the methods are presented,both in the table and in the sections, to be: - map - apply - pipe - filter - agg - transform I find it easier to explain them in this order. And I expanded the method sections with examples and a bit more of information. I removed the most complex...
[ "Docs", "Apply" ]
0
0
0
0
0
0
0
0
[ "Looks good to me! I think the example under vectorized operations should be changed to fit with the Fahrenheit example, but that can be added in a follow-up PR.", "Thanks @arthurlw, great feedback. I'll leave the example on the vectorized section for now, as it may make sense to also expand that section as we ma...
3,079,474,716
61,469
BUG: pandas.pivot_table margins, dropna and observed parameters not producing expected result
closed
2025-05-21T08:58:05
2025-06-21T14:38:16
2025-06-21T14:38:09
https://github.com/pandas-dev/pandas/issues/61469
true
null
null
hugotomasf
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", "Duplicate Report" ]
0
0
0
0
0
0
0
0
[ "Thanks for the report! While the default value of `observed` is deprecated, that option is not planned for removal. It wasn't to clear to me if this was part of your concern.\n\n> I expect with the parameter's combination dropna=False, margins=False and observed=True to get all the rows with plausible combinations...
3,078,357,968
61,468
ENH: Implement PDEP-17
closed
2025-05-20T22:22:11
2025-08-12T23:10:18
2025-08-12T23:10:10
https://github.com/pandas-dev/pandas/pull/61468
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61468
https://github.com/pandas-dev/pandas/pull/61468
rhshadrach
11
- [ ] 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...
[ "Enhancement", "Warnings" ]
0
0
0
0
0
0
0
0
[ "Seems like the label `PDEP` can only be used for the PDEP themselves. Otherwise building the website fails, as it expects the PR to be a PDEP that needs to be rendered in the roadmap.", "@Dr-Irv - Thanks for the review! I'm negative on the name `PandasWarning` for a class that has to do with deprecations. pandas...
3,078,337,779
61,467
ENH: Support third-party execution engines in Series.map
closed
2025-05-20T22:07:21
2025-05-27T21:37:34
2025-05-27T21:37:34
https://github.com/pandas-dev/pandas/pull/61467
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61467
https://github.com/pandas-dev/pandas/pull/61467
datapythonista
0
- [X] xref #61125 - [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] A...
[ "Apply" ]
0
0
0
0
0
0
0
0
[]
3,078,154,773
61,466
BUG: Series.str.isdigit with pyarrow dtype doesn't honor unicode superscripts
open
2025-05-20T20:25:32
2025-08-21T07:19:46
null
https://github.com/pandas-dev/pandas/issues/61466
true
null
null
GarrettWu
10
### 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", "Strings", "Needs Discussion", "Upstream issue", "Arrow" ]
0
0
0
0
0
0
0
0
[ "Thanks for the report, confirmed on main. Further investigations and PRs to fix are welcome!", "@rhshadrach The issue stems from `pyarrow.compute.utf8_is_digit` not recognizing non-ASCII Unicode digits (e.g., `'³'`). To align with `str.isdigit()`'s behavior and pandas docs, I propose replacing the Arrow compute ...
3,077,824,147
61,465
BUG: Raise ValueError on integer indexers containing NA; skip test for unsupported EAs(#56727)
open
2025-05-20T18:02:28
2025-07-26T00:09:03
null
https://github.com/pandas-dev/pandas/pull/61465
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61465
https://github.com/pandas-dev/pandas/pull/61465
pelagiavlas
2
- [x] closes #56727 - [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...
[ "Bug", "Testing", "ExtensionArray", "Stale" ]
0
0
0
0
0
0
0
0
[ "Greetings! I’m following up on this PR.\r\nIf there’s any input or revisions required, please feel free to let me know.\r\nThank you!", "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...
3,075,200,403
61,464
BUG: Decimal and float-to-int conversion issues with pyarrow ≥18.0.0 in parquet and Arrow dtype tests
open
2025-05-19T23:07:27
2025-07-24T20:08:27
null
https://github.com/pandas-dev/pandas/issues/61464
true
null
null
bhavya2109sharma
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", "Closing Candidate", "Arrow" ]
0
0
0
0
0
0
0
0
[ "In newer versions of PyArrow, type identity is stricter which is why this code is now causing errors.\n\n**Issue 1:**\nHi, the issue is that `types_mapper={pa.float64(): pa.int64()}.get` is not reliable in newer versions of PyArrow. This is because each call to `pa.float64()` creates a new object, so the key in yo...
3,075,048,545
61,463
Wheels for win_arm64
closed
2025-05-19T21:22:13
2025-05-21T20:31:36
2025-05-21T20:25:01
https://github.com/pandas-dev/pandas/pull/61463
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61463
https://github.com/pandas-dev/pandas/pull/61463
khmyznikov
4
- [ ] closes #61462 - [x] no new code was added to pandas
[ "Build" ]
0
0
0
0
0
0
0
0
[ "Regular win_amd also required the `pip install delvewheel` for some reason, despite the fact I didn't touched it. Added that for all win plats to fix the build.", "Thanks @khmyznikov ", "@mroeschke any ETA when the new version will be available on PyPi?", "> any ETA when the new version will be available on ...
3,075,047,965
61,462
BUILD: Provide wheel for Windows ARM64
closed
2025-05-19T21:21:52
2025-05-21T20:25:02
2025-05-21T20:25:02
https://github.com/pandas-dev/pandas/issues/61462
true
null
null
khmyznikov
0
### What is the current behavior? Installation via pip requires local build. ### What is the desired behavior? To have [native wheel for WoA](https://blogs.windows.com/windowsdeveloper/2025/04/14/github-actions-now-supports-windows-on-arm-runners-for-all-public-repos/). GitHub Actions now supports win-arm64 for free...
[ "Build", "Windows", "ARM" ]
0
0
0
0
0
0
0
0
[]
3,074,786,808
61,461
DOC: fix two mistakes in missing_data.rst
closed
2025-05-19T19:17:16
2025-05-20T15:02:21
2025-05-19T19:45:53
https://github.com/pandas-dev/pandas/pull/61461
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61461
https://github.com/pandas-dev/pandas/pull/61461
gogowitsch
0
Small documentation improvements on `missing_data.rst`: - The referenced example no longer exists - Add space after full stop.
[ "Docs", "Missing-data" ]
0
0
0
0
0
0
0
0
[]
3,073,889,307
61,460
PERF: Slow Windows / Ubuntu Unit Tests during Status Checks
closed
2025-05-19T13:37:43
2025-06-02T16:26:14
2025-06-02T16:26:11
https://github.com/pandas-dev/pandas/issues/61460
true
null
null
MartinBraquet
3
### 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. - [x] I have confirmed this issue exists on the main branch of pandas. ### Reproducible Examp...
[ "Performance", "CI", "Windows", "Needs Discussion" ]
0
0
0
0
0
0
0
0
[ "Update: \nAfter a rerun of the checks in PR #61457, they all passed in 45 min.\nThis is a significant difference with the 90 min that it took for the precedent check that ran just an hour before it.\nIt would be interesting to determine the cause for that twofold increase in runtime.\nIt ran at the same time as an...
3,073,813,106
61,459
DOC: change `pandas.DataFrame.unstack`'s `fill_value` param to scalar
closed
2025-05-19T13:13:36
2025-05-19T16:00:47
2025-05-19T16:00:40
https://github.com/pandas-dev/pandas/pull/61459
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61459
https://github.com/pandas-dev/pandas/pull/61459
KevsterAmp
1
- [x] closes #61445 (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...
[ "Docs" ]
0
0
0
0
0
0
0
0
[ "Thanks @KevsterAmp " ]
3,073,785,764
61,458
Use BaseExecutionEngine for Python and Numba engines
open
2025-05-19T13:04:52
2025-06-15T15:25:23
null
https://github.com/pandas-dev/pandas/issues/61458
true
null
null
datapythonista
6
In #61032 we have created a new base class `BaseExecutionEngine` that engines can subclass to handle `apply` and `map` operations. The base class has been initially created to allow third-party engines to be passed to `DataFrame.apply(..., engine=third_party_engine)`. But our core engines Python and Numba can also be i...
[ "Apply" ]
0
0
0
0
0
0
0
0
[ "Thanks for assigning me this @datapythonista ! This looks interesting to work on and I'll start looking into it.", "Thanks @arthurlw. A possible approach could be starting by numba only. The numba engine is only implemented for `DataFrame.apply` for now, and only for certain types of the parameters. For example,...
3,073,461,741
61,457
ENH: Added `DataFrame.nsorted` to select top ``n`` rows according to column-dependent order
open
2025-05-19T11:11:18
2025-07-29T18:19:32
null
https://github.com/pandas-dev/pandas/pull/61457
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61457
https://github.com/pandas-dev/pandas/pull/61457
MartinBraquet
4
- [x] closes #61166 - [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...
[ "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.", "The PR has been waiting for re...
3,073,419,317
61,456
PERF: Setting an item of incompatible dtype
closed
2025-05-19T10:55:32
2025-08-05T17:04:22
2025-08-05T17:04:22
https://github.com/pandas-dev/pandas/issues/61456
true
null
null
muhannad125
2
### 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...
[ "Indexing", "Performance", "Needs Info" ]
0
0
0
0
0
0
0
0
[ "@muhannad125 - please provide a reproducible example. Setup an example `df` with synthetic data.\n\nYou would might be interested in using [map](https://pandas.pydata.org/docs/reference/api/pandas.DataFrame.map.html) if performance is a concern.", "Closing as needing more information" ]
3,072,836,884
61,455
fix(doc): #61432 typing
closed
2025-05-19T07:34:54
2025-05-20T21:42:25
2025-05-20T21:40:31
https://github.com/pandas-dev/pandas/pull/61455
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61455
https://github.com/pandas-dev/pandas/pull/61455
cmp0xff
3
- [x] closes #61432 - [ ] [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", "Reshaping" ]
0
0
0
0
0
0
0
0
[ "@mroeschke thank you for the approval. Wouldn't the PR fit for 2.2.4 or 2.3.0? It seems to be merely a fix to me.", "This PR will go into 3.0. No whatsnew entry is needed for this PR.", "Thanks @cmp0xff " ]
3,072,117,089
61,454
BUG: Raise TypeError when joining with non-DataFrame using 'on=' (GH#61434)
open
2025-05-18T23:00:01
2025-06-25T01:51:32
null
https://github.com/pandas-dev/pandas/pull/61454
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61454
https://github.com/pandas-dev/pandas/pull/61454
iabhi4
3
Closes GH#61434 ### What does this PR change? When using `DataFrame.join()` with the `on` parameter, passing an invalid object like a `dict`, `int`, or third-party DataFrame previously resulted in unclear internal errors. This PR adds a minimal type check that raises a clear `TypeError` when `other` is not a `...
[ "Reshaping", "Error Reporting", "Stale" ]
0
0
0
0
0
0
0
0
[ "All checks passed except the Pyodide build, which failed due to a rate-limit (HTTP 429). The failure seems unrelated to this PR. A rerun should resolve 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/developm...
3,072,076,580
61,453
TYP: Update typing for 3.10
closed
2025-05-18T21:38:17
2025-05-19T16:11:30
2025-05-19T16:11:23
https://github.com/pandas-dev/pandas/pull/61453
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61453
https://github.com/pandas-dev/pandas/pull/61453
Dr-Irv
1
- Ran `pyupgrade` so that typing is updated to python 3.10 - that modified files in `pandas/_libs` - Updated `pandas/_typing.py` to have the following: - Use `TypeAlias` to declare all types - Change `Type` to use `builtins.type` - Remove `Optional` - Remove use of `Union` *except* for when it is used on a...
[ "Typing" ]
0
0
0
0
0
0
0
0
[ "Thanks @Dr-Irv " ]
3,071,183,637
61,452
BUG: Compiler Flag Drift May Affect Pandas ABI Stability via Memory Assumptions
closed
2025-05-18T00:17:59
2025-05-18T10:21:22
2025-05-18T10:21:00
https://github.com/pandas-dev/pandas/issues/61452
true
null
null
BryteLite
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", "Build" ]
0
0
0
0
0
0
0
0
[ "NumPy just released 2.2.6 fixes concerning types today. Might just mask the issue however.", "https://sethmlarson.dev/slop-security-reports", "Thanks @eli-schwartz - closing along with https://github.com/matplotlib/matplotlib/issues/30064 and https://github.com/numpy/numpy/issues/28953" ]
3,071,115,712
61,451
BUG: Fix DataFrame constructor misclassification of array-like with 'name' attribute (#61443)
closed
2025-05-17T22:30:43
2025-05-19T15:54:56
2025-05-19T15:54:49
https://github.com/pandas-dev/pandas/pull/61451
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61451
https://github.com/pandas-dev/pandas/pull/61451
iabhi4
3
BUG: Fix DataFrame constructor misclassification of array-like with 'name' attribute Previously, any object with a `.name` attribute (like some `vtkArray`-like objects) was assumed to be a `Series` or `Index`, causing the DataFrame constructor to misinterpret the input and raise errors when passed valid 2D array-lik...
[ "Bug", "Constructors" ]
0
0
0
0
0
0
0
0
[ "**Note:** One unrelated pre-commit check failed:\r\n\r\n ```\r\nCheck for strings with misplaced spaces.................................................................Failed\r\n - hook id: unwanted-patterns-strings-with-misplaced-whitespace\r\n\r\n pandas/_libs/tslibs/offsets.pyx:5112: String has a space at the b...
3,070,159,397
61,450
BUG: Fix Dataframe handling of scalar Timestamp #61444
closed
2025-05-17T01:42:15
2025-06-30T18:26:21
2025-06-30T18:26:20
https://github.com/pandas-dev/pandas/pull/61450
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61450
https://github.com/pandas-dev/pandas/pull/61450
Farsidetfs
3
closes #61444 Tests developed, but validating against test suite to ensure full compliance. Will update pull request with submission notes and unit test after validation this doesn't disrupt other functions. TODO: - [ ] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_co...
[ "Bug", "Stale", "Timestamp" ]
0
0
0
0
0
0
0
0
[ "Existing tests seem to be happy, what's needed is to add a test that fails now, and passes with the code changes here. As well as the release note.", "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/con...
3,070,072,229
61,449
DOC: fix typo in merging.rst
closed
2025-05-16T23:56:46
2025-05-18T17:25:15
2025-05-17T00:21:58
https://github.com/pandas-dev/pandas/pull/61449
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61449
https://github.com/pandas-dev/pandas/pull/61449
wjandrea
1
"order data" - ~~[ ] 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/panda...
[ "Docs" ]
0
0
0
0
0
0
0
0
[ "Thanks @wjandrea " ]
3,069,696,569
61,448
DOC: Skip parallel_coordinaes, andrews_curves doctests
closed
2025-05-16T19:00:05
2025-05-16T20:59:18
2025-05-16T20:59:16
https://github.com/pandas-dev/pandas/pull/61448
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61448
https://github.com/pandas-dev/pandas/pull/61448
mroeschke
0
The method calls are skipped in these doctest, so we should skip the `DataFrame` setup that makes a network call e.g where this can fail https://github.com/pandas-dev/pandas/actions/runs/15072461295/job/42371956167
[ "Docs" ]
0
0
0
0
0
0
0
0
[]
3,068,360,501
61,447
BUG: read_csv silently ignores out of bounds errors when parsing date columns
closed
2025-05-16T08:42:56
2025-05-17T21:06:07
2025-05-17T21:05:50
https://github.com/pandas-dev/pandas/issues/61447
true
null
null
ssuhre
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", "IO CSV", "Non-Nano" ]
0
0
0
0
0
0
0
0
[ "take", "This is fixed on main. The dtype of the column is now `datetime64[s]`", "Thanks for the report, and thanks @asishm. Closing." ]
3,067,920,070
61,446
CI: clean up wheel build workarounds now that Cython 3.1.0 is out
closed
2025-05-16T04:44:14
2025-07-01T08:27:58
2025-05-16T15:54:59
https://github.com/pandas-dev/pandas/pull/61446
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61446
https://github.com/pandas-dev/pandas/pull/61446
rgommers
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" ]
0
0
0
0
0
0
0
0
[ "Thanks @rgommers ", "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 the first parent branch of the this PR on top of the older ...
3,067,627,843
61,445
DOC: DataFrame.unstack should accept fill_value with more types than just int/str/dict
closed
2025-05-16T00:12:57
2025-05-19T16:00:41
2025-05-19T16:00:41
https://github.com/pandas-dev/pandas/issues/61445
true
null
null
loicdiridollou
3
### 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/api/pandas.DataFrame.unstack.html#pandas.DataFrame.unstack ### Documenta...
[ "Docs", "Reshaping" ]
0
0
0
0
0
0
0
0
[ "Also I realized that the `dict` option is quite confusing, I am not able to make it work, the following code will fail:\n\n```python\npd.DataFrame([\n [\"a\", \"b\", pd.Timestamp(2021, 3, 2)],\n [\"a\", \"a\", pd.Timestamp(2023, 4, 2)],\n [\"b\", \"b\", pd.Timestamp(2024, 3, 2)]\n]).set_index([0, 1]).unst...
3,065,324,221
61,444
BUG: DataFrame column assignment with pd.Timestamp leads to unexpected dtype and incorrect JSON output
closed
2025-05-15T07:58:40
2025-05-19T02:46:08
2025-05-17T21:15:26
https://github.com/pandas-dev/pandas/issues/61444
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", "Non-Nano", "Timestamp" ]
0
0
0
0
0
0
0
0
[ "take", "I was able to duplicate and believe my PR will resolve this issue. If confirmed as a bug worth fixing, will update tests and change document and submit PR for approval. ", "Thanks for the report, it seems to me the issue lies with Timestamp creation rather than assignment to a DataFrame.\n\n```python...
3,064,367,936
61,443
BUG: `DataFrame` constructor not compatible with array-like classes that have a `'name'` attribute
closed
2025-05-14T22:02:04
2025-05-19T15:54:50
2025-05-19T15:54:50
https://github.com/pandas-dev/pandas/issues/61443
true
null
null
user27182
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. - [ ] I have confirmed this bug exists on the [main branch](https://pandas.pydata.org/docs/dev/ge...
[ "Bug", "Constructors" ]
0
0
0
0
0
0
0
0
[ "Hi!\n\nI'm a beginner contributor and spent some time digging into this — here's what I found:\n\nWhen an array-like object (like `vtkArray` or similar) is passed to `pd.DataFrame()` and it has a `.name` attribute, the constructor currently assumes it's a `Series` or `Index` and wraps it into a `{name: data}` dict...
3,063,692,554
61,442
ENH: add option to save json without escaping forward slashes
open
2025-05-14T16:35:35
2025-07-01T16:12:55
null
https://github.com/pandas-dev/pandas/issues/61442
true
null
null
ellisbrown
0
### Feature Type - [x] Adding new functionality to pandas - [ ] Changing existing functionality in pandas - [ ] Removing existing functionality in pandas ### Problem Description I love pandas and use it extensively. one very common use case for me is saving large json / jsonl files to describe ML training dataset...
[ "Enhancement", "IO JSON", "Needs Triage" ]
2
0
0
0
0
0
0
0
[]
3,062,286,222
61,441
BUG: Raise ValueError on integer indexers containing NA; skip test for unsupported EAs
closed
2025-05-14T08:30:32
2025-05-20T18:02:28
2025-05-20T18:02:28
https://github.com/pandas-dev/pandas/pull/61441
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61441
https://github.com/pandas-dev/pandas/pull/61441
pelagiavlas
0
- [ ] closes #56727 - [ ] [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
[]
3,062,281,472
61,440
ENH: Broaden `dict` to `Mapping` as replace argument
closed
2025-05-14T08:29:11
2025-05-27T15:26:34
2025-05-27T15:26:33
https://github.com/pandas-dev/pandas/issues/61440
true
null
null
DavideCanton
9
### Feature Type - [ ] Adding new functionality to pandas - [x] Changing existing functionality in pandas - [ ] Removing existing functionality in pandas ### Problem Description Currently the `replace` method of `Series` allows only `dict`, but not `Mapping` inputs, as the `DataFrame` one does. For example: ```...
[ "Enhancement", "Needs Triage" ]
0
0
0
0
0
0
0
0
[ "Hey @DavideCanton,\n\nHave you installed the `pandas-stubs` package? It is an extension of the pandas repo for types.\nI have tried locally in an environment where pandas-stubs is installed and no warning are raised (pyright/mypy).\nCan you provide how you typecheck this code?\n\nSee below, the type is `Mapping` a...
3,062,080,513
61,439
BUG: Confusing Behavior When Assigning DataFrame Columns Using `omegaconf.ListConfig`
open
2025-05-14T07:15:34
2025-05-17T21:30:20
null
https://github.com/pandas-dev/pandas/issues/61439
true
null
null
Trezorro
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. Is it possible to construct a minimal class for `cfg.cols` demonstrating the issue? This isn't necessary, but would be helpful.", "This issue stems from \n\nhttps://github.com/pandas-dev/pandas/blob/5aa78c019649a291456788bc3a808452a387884b/pandas/core/frame.py#L4172\n\nHere we have an isin...
3,061,658,902
61,438
BUG: ImportError: cannot import name 'NaN' from 'numpy' in squeeze_pro.py
closed
2025-05-14T02:50:31
2025-05-14T16:19:37
2025-05-14T16:19:36
https://github.com/pandas-dev/pandas/issues/61438
true
null
null
heidongqilin
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", "Needs Triage" ]
0
0
0
0
0
0
0
0
[ "Thanks for the report. `pandas_ta` is not maintained by this repository so I would suggest pinging the owners of that repository. Closing" ]
3,061,433,244
61,437
Backport PR #61423: CI: Fix test failures in 32-bit environment
closed
2025-05-13T23:25:43
2025-05-13T23:57:41
2025-05-13T23:57:38
https://github.com/pandas-dev/pandas/pull/61437
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61437
https://github.com/pandas-dev/pandas/pull/61437
mroeschke
0
null
[ "CI", "Dependencies" ]
0
0
0
0
0
0
0
0
[]
3,059,177,316
61,436
change readme
closed
2025-05-13T08:18:06
2025-05-13T08:20:01
2025-05-13T08:20:01
https://github.com/pandas-dev/pandas/pull/61436
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61436
https://github.com/pandas-dev/pandas/pull/61436
uzairahmad03
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
[]
3,057,668,111
61,435
ENH: Implemented MultiIndex.searchsorted method ( GH14833)
open
2025-05-12T17:35:52
2025-07-20T02:34:53
null
https://github.com/pandas-dev/pandas/pull/61435
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61435
https://github.com/pandas-dev/pandas/pull/61435
GSAUC3
15
- [X] closes #14833 - [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]...
[ "Enhancement", "MultiIndex", "Stale" ]
0
0
0
0
0
0
0
0
[ "Thanks @GSAUC3 for the PR. Is there and issue, or has there been any discussion about this elsewhere?", "Hi @datapythonista, this was the issue https://github.com/pandas-dev/pandas/issues/14833 , against which i made the pull request.", "HI, I had ran pytest and pre-commit locally, is it possible to run all t...
3,057,649,370
61,434
BUG: Joining Pandas with Polars dataframe produces fuzzy errormessage
open
2025-05-12T17:28:02
2025-05-18T23:07:58
null
https://github.com/pandas-dev/pandas/issues/61434
true
null
null
Juan-132
7
### 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" ]
0
0
0
0
0
0
0
0
[ "I have confirmed the bug on pandas version 2.2.3.\nThe error message when attempting to join a pandas DataFrame with a Polars DataFrame is misleading. I intend to work on a fix to provide a more appropriate error message that clearly indicates the incompatibility between pandas and Polars for such join operations....
3,057,477,464
61,433
BUG: Some `ExtensionArray`s can return 0-d Elements
open
2025-05-12T16:12:18
2025-05-18T22:01:27
null
https://github.com/pandas-dev/pandas/issues/61433
true
null
null
ilan-gold
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", "Indexing", "Needs Discussion", "ExtensionArray" ]
0
0
0
0
0
0
0
0
[ "Thanks for the report!\n\n> The reason I care is that arrow arrays do not have a 0d version, which makes it tough to develop over all ExtensionArray classes\n\nCan you give a little more detail here as to why it makes it tough? In particular, does \n\n pd.array([1, 2], dtype=\"int64[pyarrow]\")[0]\n\nalso cause...
3,057,409,687
61,432
DOC: Series.name is just Hashable, but many column arguments require str
closed
2025-05-12T15:45:47
2025-05-20T21:40:33
2025-05-20T21:40:33
https://github.com/pandas-dev/pandas/issues/61432
true
null
null
cmp0xff
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/api/pandas.Series.name.html * https://pandas.pydata.org/docs/dev/refere...
[ "Docs", "Reshaping", "good first issue" ]
0
0
0
0
0
0
0
0
[ "Thanks for the report. Hashable is correct, but the docs often use `label` instead, e.g.\n\nhttps://pandas.pydata.org/docs/reference/api/pandas.DataFrame.set_index.html\n\nI think we should use `label` for consistency." ]
3,057,389,539
61,431
BUG: documented usage of of `str.split(...).str.get` fails on dtype `large_string[pyarrow]`
open
2025-05-12T15:38:24
2025-06-03T11:41:18
null
https://github.com/pandas-dev/pandas/issues/61431
true
null
null
SandroCasagrande
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", "Strings", "Needs Discussion" ]
0
0
0
0
0
0
0
0
[ "Thanks for the report! Agreed on the inconsistency here. \n\n```python\nprint(pd.Series([\"abc\"], dtype=\"large_string[pyarrow]\").str.split(\"b\"))\n# 0 ['a' 'c']\n# dtype: list<item: large_string>[pyarrow]\nprint(pd.Series([\"abc\"], dtype=\"string[pyarrow]\").str.split(\"b\"))\n# 0 [a, c]\n# dtype: objec...
3,055,081,134
61,430
BLD: Decrease size of docker image
closed
2025-05-11T16:25:28
2025-05-12T19:10:45
2025-05-12T19:10:38
https://github.com/pandas-dev/pandas/pull/61430
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61430
https://github.com/pandas-dev/pandas/pull/61430
huisman
1
This PR reduces the size of the docker image by: - combining RUN commands to minimise the number of layers - removing the apt lists files to reduce total size - use --no-cache-dir when installing with pip In my tests it reduced the size of the final image with approximately 0.47GB (most of it due to the --no-ca...
[]
0
0
0
0
0
0
0
0
[ "Thanks @huisman " ]
3,055,017,753
61,429
DOC: Updates to documentation - io.rst
closed
2025-05-11T14:17:41
2025-05-12T16:55:22
2025-05-12T16:55:16
https://github.com/pandas-dev/pandas/pull/61429
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61429
https://github.com/pandas-dev/pandas/pull/61429
ConnorWallace15
1
updating hdf5 data description link due to 404 error - [x] closes #61428 - [ ] [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/d...
[ "Docs" ]
0
0
0
0
0
0
0
0
[ "Thanks @ConnorWallace15 " ]
3,054,604,088
61,428
DOC: Broken Link in IO Tools - HDF5 Data Description
closed
2025-05-11T00:23:23
2025-05-12T16:55:17
2025-05-12T16:55:17
https://github.com/pandas-dev/pandas/issues/61428
true
null
null
ConnorWallace15
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/user_guide/io.html ### Documentation problem The link for HDF5 data description is br...
[ "Docs", "IO HDF5" ]
0
0
0
0
0
0
0
0
[ "take", "Thanks for raising this! PRs are welcome." ]
3,054,507,099
61,427
ENH: access arrow-backed map as a python dictionary
open
2025-05-10T20:29:32
2025-07-15T21:07:24
null
https://github.com/pandas-dev/pandas/issues/61427
true
null
null
mikelui
0
### Feature Type - [x] Adding new functionality to pandas - [x] Changing existing functionality in pandas - [ ] Removing existing functionality in pandas ### Problem Description Users should be able to accessing a dataframe element–that is an Arrow-backed map–with normal python dict semantics. Today, accessing a...
[ "Enhancement", "Needs Triage", "Arrow" ]
0
0
0
0
0
0
0
0
[]
3,054,347,369
61,426
BUG: Fix memory leak when slicing Series and assigning to self
closed
2025-05-10T16:36:04
2025-06-02T16:55:00
2025-06-02T16:54:59
https://github.com/pandas-dev/pandas/pull/61426
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61426
https://github.com/pandas-dev/pandas/pull/61426
niranjanorkat
1
This PR fixes a memory leak that occurs when a Series is sliced and reassigned to itself, e.g., a = a[-1:]. The underlying BlockManager retained references to the original data, preventing garbage collection. This is resolved by ensuring the sliced result copies the backing data. Closes #60640.
[]
0
0
0
0
0
0
0
0
[ "Thanks for the PR, but this solution would be a non-starter as it introduces extra copies.\r\n\r\nSince there's continuing discussion in the issue going to close this PR" ]
3,054,212,451
61,425
BUG(string dtype): Arithmetic operations between Series with string dtype index
open
2025-05-10T14:43:33
2025-05-11T23:55:04
null
https://github.com/pandas-dev/pandas/issues/61425
true
null
null
rhshadrach
2
Similar to #61099, but concerning `lhs + rhs`. Alignment in general is heavily involved here as well. One thing to note is that unlike in comparisons operations, in arithmetic operations the `lhs.index` dtype is favored, assuming no coercion is necessary. ```python dtypes = [ np.dtype(object), pd.StringDtype("...
[ "Bug", "Strings", "Needs Discussion", "API - Consistency" ]
0
0
0
0
0
0
0
0
[ "take", "Hi @rhshadrach \nI’ve dug into this issue on pandas 2.2.2 and here’s what I’ve confirmed:\nimport numpy as np\nimport pandas as pd\nimport pyarrow as pa\n# Check pandas version\nprint(pd.__version__)\n\ndtypes = [\n np.dtype(object),\n pd.StringDtype(\"pyarrow\"), # Remove na_value for older panda...
3,054,181,753
61,424
i want to develop one feature in pandas
closed
2025-05-10T14:14:16
2025-05-10T14:31:48
2025-05-10T14:31:47
https://github.com/pandas-dev/pandas/issues/61424
true
null
null
Sunil5411
2
### 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 i want to develop one feature in pandas ...
[ "Usage Question", "Needs Triage" ]
0
0
0
0
0
0
0
0
[ "Adds a native .explain() method to pandas DataFrames that provides an instant, human-readable summary of data — including column types, missing values, distributions, and key insights — all in a single command to accelerate EDA.", "Thanks for the suggestion but I would be -1 to include this in pandas. This sound...
3,053,798,669
61,423
CI: Fix test failures in 32-bit environment
closed
2025-05-10T06:43:45
2025-05-13T23:25:56
2025-05-13T23:09:01
https://github.com/pandas-dev/pandas/pull/61423
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61423
https://github.com/pandas-dev/pandas/pull/61423
chilin0525
4
I noticed that some CI failures are due to the same test errors appearing in several recent PRs. After comparing multiple failed and successful CI runs, it seems that the unit tests fail when using `cython==3.1.0` in the Linux 32-bit environment. * Faliure unittest case: ```python FAILED pandas/tests/window...
[ "CI", "Dependencies", "32bit" ]
0
0
0
0
0
0
0
0
[ "@mroeschke Hi, this error seems to be an upstream issue. I created this MR just to evaluate whether it's caused by Cython.\r\nFor issues like this, what's the usual approach to ensure the unit tests pass?", "Thanks for starting investigation. If this is caused by Cython then we probably need to pin it like you d...
3,053,377,590
61,422
BUG: Raise MergeError when suffixes result in duplicate column names …
closed
2025-05-09T23:21:41
2025-06-06T14:12:42
2025-06-06T14:12:20
https://github.com/pandas-dev/pandas/pull/61422
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61422
https://github.com/pandas-dev/pandas/pull/61422
Farsidetfs
20
closes #61402 All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit). Added [type annotations](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#type-hints) to new arguments/methods/functions. Added an entry in the la...
[ "Bug", "Reshaping" ]
0
0
0
0
0
0
0
0
[ "pre-commit.ci autofix", "Thanks for your contribution!\r\n\r\nJust a quick note: you don't need to write `GH#61402` in the PR description — simply using `#61402` in PR description, is enough, GitHub will automatically link it 😀. \r\nAlso, since this PR addresses a bug, please make sure to:\r\n* Add a unit test ...
3,052,849,935
61,421
DOC: Updated titanic.rst survived description
closed
2025-05-09T18:01:36
2025-05-09T18:36:15
2025-05-09T18:36:07
https://github.com/pandas-dev/pandas/pull/61421
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61421
https://github.com/pandas-dev/pandas/pull/61421
arthurlw
1
- [x] closes #61412 - [ ] ~[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" ]
0
0
0
0
0
0
0
0
[ "Thanks @arthurlw " ]
3,052,183,501
61,420
ENH: Add smart_groupby() method for automatic grouping by categorical columns and aggregating numerics
closed
2025-05-09T13:27:40
2025-05-14T18:59:18
2025-05-14T18:59:15
https://github.com/pandas-dev/pandas/issues/61420
true
null
null
rit4rosa
3
### Feature Type - [x] Adding new functionality to pandas - [ ] Changing existing functionality in pandas - [ ] Removing existing functionality in pandas ### Problem Description Currently, pandas.DataFrame.groupby() requires users to explicitly specify both the grouping columns and the aggregation functions. This...
[ "Enhancement", "Groupby", "Closing Candidate" ]
0
0
0
0
0
0
0
0
[ "I would like to work on this feature if you agree.", "Thanks for the suggestion but I would be -1 including this in pandas. pandas is moving toward explicit and less automatic behaviors, and the snippet you posted is short enough to be wrapped in a custom helper function", "Agreed @mroeschke. Closing." ]
3,052,051,865
61,419
BUILD: Missing Windows free-threading wheel
closed
2025-05-09T12:40:24
2025-05-10T15:07:23
2025-05-10T14:36:30
https://github.com/pandas-dev/pandas/issues/61419
true
null
null
blink1073
2
### Installation check - [x] I have read the [installation guide](https://pandas.pydata.org/pandas-docs/stable/getting_started/install.html#installing-pandas). ### Platform Windows-2022Server-10.0.20348-SP0 ### Installation Method pip install ### pandas Version 2.2.3 ### Python Version 3.13.3 free-threading ...
[ "Build", "Needs Triage" ]
0
0
0
0
0
0
0
0
[ "Thanks for the issue, but our 3.13t wheels will be released in pandas 3.0. Our nightly wheels have 3.13t wheels though https://anaconda.org/scientific-python-nightly-wheels/pandas/files. Closing as we won't be supporting free threading in pandas 2.2.3", "Understood, thanks!" ]
3,051,633,779
61,418
BUG/FEATURE REQUEST: DataFrame.to_sql() tries to create table when it exists
open
2025-05-09T09:47:10
2025-06-03T19:39:28
null
https://github.com/pandas-dev/pandas/issues/61418
true
null
null
vladidobro
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. - [ ] I have confirmed this bug exists on the [main branch](https://pandas.pydata.org/docs/dev/ge...
[ "Bug", "IO SQL", "Needs Discussion", "Needs Info" ]
0
0
0
0
0
0
0
0
[ "Thanks for the request!\n\n> Though one could argue that this is a bug in the SQLAlchemy Oracle dialect, rather than Pandas.\n\nHas this been reported to SQLAlchemy?", "No, I believe it is not reported to SQLAlchemy, I guess I will do that.\n\nThough I feel a little bit like there should still be an escape hatch...
3,051,556,738
61,417
ENH: The prompt message in the error does not bring any valid bug prompts
open
2025-05-09T09:16:39
2025-05-20T14:28:36
null
https://github.com/pandas-dev/pandas/issues/61417
true
null
null
pengjunfeng11
1
### Feature Type - [ ] Adding new functionality to pandas - [ ] Changing existing functionality in pandas - [ ] Removing existing functionality in pandas ### Problem Description <img width="1348" alt="Image" src="https://github.com/user-attachments/assets/c4104157-1e97-4455-853b-371e9bbea1bf" /> Since the bool me...
[ "Enhancement", "Needs Triage" ]
0
0
0
0
0
0
0
0
[ "Could you please explain what you mean by \"no prompt\"? A deprecation means that the functionality will soon be removed, not that it is already removed. So at this stage `.bool()` will execute, and either return successfully or fail (like in your example, as your dataframe is inappropriate for that method)." ]
3,051,460,314
61,416
BUG: df.rolling.{std, skew, kurt} gives unexpected value
open
2025-05-09T08:42:24
2025-05-17T21:59:05
null
https://github.com/pandas-dev/pandas/issues/61416
true
null
null
Jie-Lei
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", "Window" ]
0
0
0
0
0
0
0
0
[ "Hey OP, thanks for raising this! Rolling operations include not just the current row, but also previous rows within the window. This means including or excluding the first row can impact the entire calculation, even for later rows. This is expected behavior, not a bug.\n\nLet me know if this makes sense or if you’...
3,051,304,892
61,415
BUG: ImportError: cannot import name 'NaN' from 'numpy'
closed
2025-05-09T07:40:07
2025-05-09T17:37:23
2025-05-09T17:37:22
https://github.com/pandas-dev/pandas/issues/61415
true
null
null
Bl4ckVo1d
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", "Needs Triage" ]
0
0
0
0
0
0
0
0
[ "ImportError: cannot import name 'NaN' from 'numpy' \n\n", "ImportError: cannot import name 'NaN' from 'numpy' \n\n", "Hey OP, thanks for raising this issue! Just a heads up, NaN is not a directly importable attribute from numpy. You can use np.nan instead:\n```python\nimport numpy as np\nprint(np.nan)\n```\nor...
3,050,669,700
61,414
Bug fix slow plot with datetimeindex
closed
2025-05-09T03:55:17
2025-06-02T16:55:28
2025-06-02T16:55:28
https://github.com/pandas-dev/pandas/pull/61414
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61414
https://github.com/pandas-dev/pandas/pull/61414
thehalvo
1
- [x] closes [#61398](https://github.com/pandas-dev/pandas/issues/61398) - [x] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) - [x] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-co...
[]
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." ]
3,050,627,050
61,413
CLN: Expose arguments in DataFrame.query
closed
2025-05-09T03:18:15
2025-05-20T02:35:42
2025-05-20T02:35:31
https://github.com/pandas-dev/pandas/pull/61413
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61413
https://github.com/pandas-dev/pandas/pull/61413
loicdiridollou
1
- [x] closes #61405 - [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...
[ "Clean", "expressions" ]
0
0
0
0
0
0
0
0
[ "Thanks @loicdiridollou - very nice!" ]
3,050,183,256
61,412
DOC: Error in Getting started tutorials > How do I read and write tabular data?
closed
2025-05-08T21:59:48
2025-05-09T18:36:09
2025-05-09T18:36:08
https://github.com/pandas-dev/pandas/issues/61412
true
null
null
paintdog
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/getting_started/intro_tutorials/02_read_write.html ### Documentation problem In the d...
[ "Docs" ]
0
0
0
0
0
0
0
0
[ "Thanks for catching this! The correct mapping is 0 = did not survive and 1 = survived." ]
3,049,800,285
61,411
DOC: removed none from docstring
closed
2025-05-08T18:38:30
2025-05-08T22:27:29
2025-05-08T22:27:22
https://github.com/pandas-dev/pandas/pull/61411
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61411
https://github.com/pandas-dev/pandas/pull/61411
arthurlw
1
- [x] closes #61408 - [ ] ~[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", "Algos" ]
0
0
0
0
0
0
0
0
[ "Thanks @arthurlw " ]
3,049,575,679
61,410
CI: Upgrade to ubuntu-24.04, install Python free threading from conda-forge
closed
2025-05-08T16:50:51
2025-05-16T00:58:56
2025-05-15T18:59:46
https://github.com/pandas-dev/pandas/pull/61410
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61410
https://github.com/pandas-dev/pandas/pull/61410
mroeschke
6
null
[ "CI" ]
0
0
0
0
0
0
0
0
[ "Seems like that the python-freethreading from conda-forge is not recognized as a valid Python, no idea why. But other than that this looks great, much cleaner.", "Probably needs a bump of meson/meson-python.", "submitted https://github.com/cython/cython/issues/6870 for the warning.", "thanks @mroeschke ", ...
3,049,397,172
61,409
BUG: CVE-2020-13091
closed
2025-05-08T15:40:20
2025-05-08T15:59:46
2025-05-08T15:59:45
https://github.com/pandas-dev/pandas/issues/61409
true
null
null
mrw56410
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", "Needs Triage" ]
0
0
0
0
0
0
0
0
[ "Please see the discussion in https://github.com/pandas-dev/pandas/issues/49810, https://github.com/pandas-dev/pandas/issues/36256, https://github.com/pandas-dev/pandas/issues/48049. This is a won't fix from the pandas side" ]
3,049,087,156
61,408
DOC: axis argument for take says `None` is acceptable, but that is incorrect.
closed
2025-05-08T13:54:54
2025-05-08T22:27:23
2025-05-08T22:27:23
https://github.com/pandas-dev/pandas/issues/61408
true
null
null
Dr-Irv
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/pandas-docs/stable/reference/api/pandas.DataFrame.take.html#pandas.DataFrame.take ### Docum...
[ "Docs", "Algos" ]
0
0
0
0
0
0
0
0
[ "This was changed in https://github.com/pandas-dev/pandas/pull/20179 and seems to be erroneous, even at that time." ]
3,049,045,130
61,407
BUG: to_csv() quotechar/escapechar behavior differs from csv module
closed
2025-05-08T13:40:42
2025-05-30T16:36:43
2025-05-30T16:36:43
https://github.com/pandas-dev/pandas/issues/61407
true
null
null
johnrtian
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. - [ ] 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
[ "Confirmed on main. Agreed with the expected behavior, further investigations and PRs to fix are welcome!", "take", "@omarraf are you still working on this? can i take over this issue thanks", "@KevsterAmp yes go for it ", "Take" ]
3,049,036,809
61,406
BUG: way to include all columns within a groupby apply
open
2025-05-08T13:37:47
2025-05-08T16:47:11
null
https://github.com/pandas-dev/pandas/issues/61406
true
null
null
madelavar12
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", "Groupby", "Apply", "Closing Candidate" ]
1
0
0
0
0
0
0
0
[ "Thanks for the report.\n\n1. You can do `df.groupby(...)[df.columns]`.\n2. You can access the groups from the index of the result.\n3. You can do `df.groupby(..., as_index=False)` to have the groups be columns instead of index.\n\nIn the event that none of these work for you, you can use `DataFrameGroupBy.pipe` to...
3,047,535,649
61,405
DOC/ENH: Add full list of argument for DataFrame.query
closed
2025-05-08T01:16:47
2025-07-18T04:46:05
2025-05-20T02:35:33
https://github.com/pandas-dev/pandas/issues/61405
true
null
null
loicdiridollou
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/reference/api/pandas.DataFrame.query.html#pandas.DataFrame.query ### Documentation pro...
[ "Docs" ]
0
0
0
0
0
0
0
0
[ "Thanks for raising! I agree that the docs could be clearer and that `**kwargs` should be replaced with the arguments you listed. ", "Great thanks Arthur! I’ll prepare a PR to improve function signature and\r\ndocs, it is helpful for the stubs in particular.\r\n\r\nOn Thu, May 8, 2025 at 3:20 AM Arthur Laureus Wi...
3,047,207,237
61,404
BLD: allow to build with non-MSVC compilers on Windows
closed
2025-05-07T21:25:47
2025-06-17T04:30:04
2025-06-16T19:44:46
https://github.com/pandas-dev/pandas/pull/61404
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61404
https://github.com/pandas-dev/pandas/pull/61404
lazka
5
Always passing --vsenv to meson means pandas can't be built with gcc/clang on Windows. Instead add it to the cibuildwheel config so MSVC is still forced in CI when building wheels, and in various places where it is built via pip.
[ "Stale" ]
0
0
0
0
0
0
0
0
[ "I understand that this is an edge case on Windows, and that mingw is not officially supported, but numpy/scipy also don't force msvc, so I though it's worth a try proposing this.\r\n\r\nFeedback welcome.", "Thanks for the PR. This makes sense, although I think the challenge is more comprehensively how we documen...
3,045,379,589
61,403
BUG: guess_datetime_format cannot infer iso 8601 format
closed
2025-05-07T09:41:27
2025-05-08T11:01:15
2025-05-07T17:04:01
https://github.com/pandas-dev/pandas/issues/61403
true
null
null
Thomath
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", "Datetime", "Warnings" ]
0
0
0
0
0
0
0
0
[ "Thanks for the report. I can reproduce on 2.2.x, but this warning does not appear on main. This will be fixed in pandas 3.0. Closing." ]
3,045,217,167
61,402
BUG: Duplicate columns allowed on `merge` if originating from separate dataframes
closed
2025-05-07T08:50:02
2025-06-06T14:12:22
2025-06-06T14:12:22
https://github.com/pandas-dev/pandas/issues/61402
true
null
null
nikaltipar
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", "Reshaping" ]
0
0
0
0
0
0
0
0
[ "Possibly related #13659", "Thanks for the report! Agreed both should raise. PRs to fix are welcome!", "Ok, I'll see if I can squeeze this in for this month. It should easy enough to fix. Of course, if anyone else wants to take it up, feel free to!", "take", "Hii I'm new to open source and pandas internals,...
3,043,719,829
61,401
ENH: access sliced dataframe from rolling.cov
open
2025-05-06T18:51:17
2025-07-18T20:46:55
null
https://github.com/pandas-dev/pandas/issues/61401
true
null
null
srkunze
1
### Feature Type - [x] Adding new functionality to pandas - [x] Changing existing functionality in pandas - [ ] Removing existing functionality in pandas ### Problem Description In a current project, I iterate over `df.rolling(window).cov(pairwise=True)`. Currently, I back-calculate from the index value of the co...
[ "Enhancement", "Window", "Needs Triage" ]
0
0
0
0
0
0
0
0
[ "For increased clarity, could you please add a minimal and fully reproducible example of your current methodology and explain how your proposed feature would improve efficiency (in terms of time complexity)?" ]
3,043,109,140
61,400
BUG: Fix naive timestamps inheriting timezone from previous timestamps in to_datetime with ISO8601 format
closed
2025-05-06T14:50:19
2025-05-06T18:29:26
2025-05-06T18:29:19
https://github.com/pandas-dev/pandas/pull/61400
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61400
https://github.com/pandas-dev/pandas/pull/61400
myenugula
1
- [x] closes #61389 (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...
[ "Timezones" ]
0
0
0
0
0
0
0
0
[ "Thanks @myenugula " ]
3,042,845,468
61,399
BUG: round on object columns no longer raises a TypeError
closed
2025-05-06T13:24:43
2025-05-21T15:56:25
2025-05-21T00:33:33
https://github.com/pandas-dev/pandas/pull/61399
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61399
https://github.com/pandas-dev/pandas/pull/61399
KevsterAmp
6
- [x] closes #61206 (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", "Regression", "Numeric Operations" ]
0
0
0
0
0
0
0
0
[ "`pre-commit.ci` is timing out and the 2 failed unit tests are canceled operations. ", "@KevsterAmp could you target this PR to `main`? We have a process to backport this PR to the `2.3.x` branch after it is merged to main", "Rebased to main and forced push the branch.\r\n\r\n@mroeschke since we're targetting t...
3,041,395,327
61,398
BUG: Slower `DataFrame.plot` with `DatetimeIndex`
open
2025-05-06T03:15:39
2025-06-03T04:08:25
null
https://github.com/pandas-dev/pandas/issues/61398
true
null
null
Abdelgha-4
7
### 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...
[ "Datetime", "Visualization", "Performance" ]
0
0
0
0
0
0
0
0
[ "Thanks for the report, confirmed on main. Further investigations and PRs to fix are welcome!", "take", "For anyone interested, I've found an even faster way to produce the same plot:\n```python\n# Additional import\nfrom matplotlib.collections import LineCollection\n\n# 1. Same as above, plot a single column t...
3,040,183,733
61,397
[pre-commit.ci] pre-commit autoupdate
closed
2025-05-05T16:29:15
2025-05-05T17:24:34
2025-05-05T17:24:05
https://github.com/pandas-dev/pandas/pull/61397
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61397
https://github.com/pandas-dev/pandas/pull/61397
pre-commit-ci[bot]
0
<!--pre-commit.ci start--> updates: - [github.com/astral-sh/ruff-pre-commit: v0.11.4 → v0.11.8](https://github.com/astral-sh/ruff-pre-commit/compare/v0.11.4...v0.11.8) - [github.com/pre-commit/mirrors-clang-format: v20.1.0 → v20.1.3](https://github.com/pre-commit/mirrors-clang-format/compare/v20.1.0...v20.1.3) - [githu...
[ "Code Style" ]
0
0
0
0
0
0
0
0
[]
3,037,631,952
61,396
Fix #60766:.map,.apply would convert element type for extension array
open
2025-05-03T21:54:02
2025-08-20T17:10:45
null
https://github.com/pandas-dev/pandas/pull/61396
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61396
https://github.com/pandas-dev/pandas/pull/61396
pedromfdiogo
1
- [x] closes #60766 - [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). - [ ...
[ "Bug", "Apply", "pyarrow dtype retention" ]
0
0
0
0
0
0
0
0
[ "i suspect the correct thing to do for map involves the just-implemented EA._cast_pointwise_result" ]
3,037,427,843
61,395
BUG: pd.to_datetime failing to parse with exception error 01-Jun-2025 in sequence with 31-May-2025
closed
2025-05-03T14:04:02
2025-05-04T23:00:29
2025-05-03T15:12:00
https://github.com/pandas-dev/pandas/issues/61395
true
null
null
johndrummond
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", "Datetime" ]
0
0
0
0
0
0
0
0
[ "Thanks for the report.\n\n> interestingly it's having the transition end of may. start of June. Starting with 01-Jun-2025 works, ending with 31-May-2025 works\n\nWhen given no other information, pandas needs to infer the format from the first value. Starting with `May`, the short-form and the long-form of the mont...
3,037,228,054
61,394
DOC: add `api.types.is_dtype_equal` into document
closed
2025-05-03T07:20:19
2025-05-03T20:00:54
2025-05-03T20:00:53
https://github.com/pandas-dev/pandas/pull/61394
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61394
https://github.com/pandas-dev/pandas/pull/61394
chilin0525
1
- [x] closes #60905 - [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). - [ ]...
[ "Docs", "Dtype Conversions" ]
0
0
0
0
0
0
0
0
[ "@datapythonista Thank you for the review and for pointing out how to fix the CI error! 🙏 " ]
3,036,899,526
61,393
Subplot title count fix + fix for issue introduced in earlier PR
closed
2025-05-02T22:00:03
2025-05-07T16:11:38
2025-05-07T16:11:19
https://github.com/pandas-dev/pandas/pull/61393
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61393
https://github.com/pandas-dev/pandas/pull/61393
eicchen
1
- [x] closes #61019 - [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). - [...
[ "Visualization" ]
0
0
0
0
0
0
0
0
[ "Thanks again @eicchen " ]
3,036,402,091
61,392
DOC: Issue with the general expressiveness of the docs
closed
2025-05-02T16:28:12
2025-08-05T17:09:58
2025-08-05T17:09:58
https://github.com/pandas-dev/pandas/issues/61392
true
null
null
epigramx
4
### 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 Example: https://pandas.pydata.org/docs/reference/api/pandas.Series.dt.floor.html ### Documentation problem Througho...
[ "Docs", "Needs Info" ]
0
0
0
0
0
0
0
0
[ "Thanks for the report.\n\n> is often limited only to a circular sentence that repeats the verb that names the function and nothing else\n\nWhat should pandas say about `sum`? Should `sum` be explained as if the reader was unfamiliar with the mathematical operation? My answer here is no - this is okay to assume, a...
3,035,882,425
61,391
fix MultiIndex.difference not working with PyArrow timestamps (#61382) ,and some ruff formating fix
closed
2025-05-02T12:10:52
2025-05-20T16:04:42
2025-05-20T16:04:41
https://github.com/pandas-dev/pandas/pull/61391
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61391
https://github.com/pandas-dev/pandas/pull/61391
NEREUScode
1
## Problem The `MultiIndex.difference` method fails to remove entries when the index contains PyArrow-backed timestamps (`timestamp[ns][pyarrow]`). This occurs because direct tuple comparisons with PyArrow scalar types are unreliable during membership checks, causing entries to remain unexpectedly. **Example**: ``...
[]
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." ]
3,035,805,085
61,390
fix MultiIndex.difference not working with PyArrow timestamps (#61382) ,and some ruff formating fix
closed
2025-05-02T11:30:06
2025-05-02T12:09:22
2025-05-02T12:09:22
https://github.com/pandas-dev/pandas/pull/61390
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61390
https://github.com/pandas-dev/pandas/pull/61390
NEREUScode
0
## Problem The `MultiIndex.difference` method fails to remove entries when the index contains PyArrow-backed timestamps (`timestamp[ns][pyarrow]`). This occurs because direct tuple comparisons with PyArrow scalar types are unreliable during membership checks, causing entries to remain unexpectedly. **Example**: ``...
[]
0
0
0
0
0
0
0
0
[]
3,035,796,151
61,389
BUG: Incorrect Parsing of Timestamps in pd.to_datetime with Series with format="ISO8601" and UTC=True
closed
2025-05-02T11:24:44
2025-05-06T18:29:21
2025-05-06T18:29:20
https://github.com/pandas-dev/pandas/issues/61389
true
null
null
PaulCalot
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", "Timezones" ]
0
0
0
0
0
0
0
0
[ "Thanks for the clear issue! Confirmed on main. \n\nWhen you batch‐parse `[\"2023-10-15T10:30:00-12:00\", \"2023-10-15T14:30:00\"]` with `format=\"ISO8601\", utc=True`, the second (naive) timestamp wrongly reuses the `“–12:00”` offset and becomes `2023-10-16T02:30:00+00:00` instead of `2023-10-15T14:30:00+00:00`. T...
3,035,790,674
61,388
fix MultiIndex.difference not working with PyArrow timestamps (#61382) ,and some formating fix
closed
2025-05-02T11:21:31
2025-05-02T11:26:59
2025-05-02T11:26:59
https://github.com/pandas-dev/pandas/pull/61388
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61388
https://github.com/pandas-dev/pandas/pull/61388
NEREUScode
0
## Problem The `MultiIndex.difference` method fails to remove entries when the index contains PyArrow-backed timestamps (`timestamp[ns][pyarrow]`). This occurs because direct tuple comparisons with PyArrow scalar types are unreliable during membership checks, causing entries to remain unexpectedly. **Example**: ``...
[]
0
0
0
0
0
0
0
0
[]
3,034,492,987
61,387
TYP: `npt._ArrayLikeInt_co` does not exist
open
2025-05-01T19:02:57
2025-05-01T23:10:27
null
https://github.com/pandas-dev/pandas/issues/61387
true
null
null
jorenham
0
https://github.com/pandas-dev/pandas/blob/e55d90783bac30b75e7288380b15a62ab6e43f78/pandas/_typing.py#L91 I wouldn't recommend using these private internal type-aliases at all, but if you must, then you probably should import it from `numpy._typing`, because it is not exported by `numpy.typing`.
[ "Typing" ]
1
0
0
0
0
0
0
0
[]
3,034,147,446
61,386
ENH: read_csv with usecols shouldn't change column order
open
2025-05-01T15:50:33
2025-06-24T16:39:46
null
https://github.com/pandas-dev/pandas/issues/61386
true
null
null
amarvin
10
### Feature Type - [ ] Adding new functionality to pandas - [x] Changing existing functionality in pandas - [ ] Removing existing functionality in pandas ### Problem Description The documentation for `pandas.read_csv(usecols=[...])` says that it treats the iterable list of columns like an unordered set (updated i...
[ "Enhancement", "IO CSV", "Needs Triage" ]
1
0
0
0
0
0
0
0
[ "This is also an issue for `pandas.read_excel(usecols=[...])`.", "Others are confused by the current feature too and have to do a workaround: https://stackoverflow.com/a/40024462/6068036", "take", "Replace \n\nif usecols:\n usecols = set(usecols)\n\nWith\n\nif usecols:\n usecols = dict.fromkeys(usecols)...
3,034,147,251
61,385
BUG: to_sql works only for strings
open
2025-05-01T15:50:27
2025-05-06T02:23:31
null
https://github.com/pandas-dev/pandas/issues/61385
true
null
null
pranav-ds
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", "IO SQL", "Needs Info" ]
0
0
0
0
0
0
0
0
[ "The block in question should only be hit when pandas falls back to `sqlite3`. What kind of connection are you supplying?", "IG, There is no problem at all you can try this solution make you will Dtype correctly \n\n`import pandas as pd\nfrom sqlalchemy import create_engine\nfrom sqlalchemy.types import DOUBLE,...
3,032,828,511
61,384
BLD: Try using shared memory utilities in Cython to reduce wheel sizes
closed
2025-05-01T00:01:38
2025-05-16T02:07:29
2025-05-16T01:14:44
https://github.com/pandas-dev/pandas/pull/61384
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61384
https://github.com/pandas-dev/pandas/pull/61384
lithomas1
5
- [ ] 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" ]
0
0
0
0
0
0
0
0
[ "around 10% savings in both compressed/uncompressed size\r\n(1MB compressed, 4MB uncompressed)\r\n\r\nscikit-learn seems to have gotten a lot more mileage out of this optimization...\r\n(they report around 25% savings)", "This looks pretty good as is, and will definitely be worthwhile to do - it's a major gain in...
3,032,500,896
61,383
ENH: Implement pandas.read_iceberg
closed
2025-04-30T21:00:23
2025-05-14T20:29:30
2025-05-14T20:29:30
https://github.com/pandas-dev/pandas/pull/61383
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61383
https://github.com/pandas-dev/pandas/pull/61383
datapythonista
11
- [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] Added [type annotati...
[ "IO Data" ]
0
0
0
0
0
0
0
0
[ "There is a test failure, for some reason PyIceberg is able to find the namespace and the table when using:\r\n\r\n```python\r\npyiceberg.catalog.load_catalog(**{\"uri\": f\"sqlite:///{path}/catalog.sqlite\"})\r\n```\r\n\r\nbut not when using:\r\n\r\n```python\r\npyiceberg.catalog.load_catalog(\"pandas_tests_catalo...
3,031,402,515
61,382
BUG: Multindex difference not working on columns with type Timestamp[ns][pyarrow]
open
2025-04-30T14:06:06
2025-08-15T14:34:22
null
https://github.com/pandas-dev/pandas/issues/61382
true
null
null
bmaisonn
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", "setops", "Arrow" ]
0
0
0
0
0
0
0
0
[ "Thanks for raising this! Confirmed on main. \n\n`MultiIndex.difference` doesn't exclude the matching row when the index includes a `timestamp[ns][pyarrow]` column. ", "`MultiIndex._convert_can_do_stop` creates a MultiIndex internally from the provided list which results in a DatetimeIndex. This then doesn't comp...
3,030,977,902
61,381
Fix alignment in Series subtraction with MultiIndex, Index and NaN values (#60908)
open
2025-04-30T11:21:39
2025-07-27T00:10:20
null
https://github.com/pandas-dev/pandas/pull/61381
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61381
https://github.com/pandas-dev/pandas/pull/61381
rit4rosa
2
This pull request fixes #60908 , where subtracting a Series with a MultiIndex containing NaN values from a Series with a regular Index could lead to incorrect results or unexpected behavior. The issue was caused by the _align_for_op method not properly handling cases where the left-hand Series had a MultiIndex and t...
[ "Bug", "Indexing", "Missing-data", "MultiIndex", "Stale" ]
0
0
0
0
0
0
0
0
[ "Hi, just following up on this PR. Let me know if you have any feedback or if anything is needed from my side. Thank you", "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...
3,030,002,590
61,380
ENH: Implement translations infrastructure
open
2025-04-30T03:24:20
2025-08-06T15:48:46
null
https://github.com/pandas-dev/pandas/pull/61380
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61380
https://github.com/pandas-dev/pandas/pull/61380
goanpeca
39
Hello team! This PR is a proposal for adding the translations infrastructure to the pandas web page. Following the discussion in https://github.com/pandas-dev/pandas/issues/56301, we (a group of folks working on the Scientific Python grant) have been working to set up infrastructure and translate the contents of...
[ "Docs", "Stale" ]
0
0
0
0
0
0
0
0
[ "/preview", "Website preview of this PR available at: https://pandas.pydata.org/preview/pandas-dev/pandas/61380/", "Thanks @goanpeca for this. Do you mind adding some more context here? I can't see in https://github.com/Scientific-Python-Translations/pandas-translations much information, like what languages are...
3,029,701,921
61,379
DOC: Fix dark mode text visibility in Getting Started accordion (#60024)
closed
2025-04-29T23:01:49
2025-04-30T16:21:16
2025-04-30T16:21:09
https://github.com/pandas-dev/pandas/pull/61379
true
https://api.github.com/repos/pandas-dev/pandas/pulls/61379
https://github.com/pandas-dev/pandas/pull/61379
danielpintosalazar
3
- [x] closes [#61377](https://github.com/pandas-dev/pandas/issues/61377) (duplicate of [#60024](https://github.com/pandas-dev/pandas/issues/60024)) ### 📄 **Description** This pull request fixes the issue described in [#61377](https://github.com/pandas-dev/pandas/issues/61377), where the text in the accordion con...
[ "Docs" ]
0
0
0
0
0
0
0
0
[ "/preview", "Website preview of this PR available at: https://pandas.pydata.org/preview/pandas-dev/pandas/61379/", "Thanks @danielpintosalazar " ]