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list
3,349,520,841
62,179
DOC: Add change in .values to the string migration guide
open
2025-08-24T13:25:22
2025-08-24T13:25:22
null
https://github.com/pandas-dev/pandas/pull/62179
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62179
https://github.com/pandas-dev/pandas/pull/62179
rhshadrach
0
- [x] closes #60301 (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...
[]
0
0
0
0
0
0
0
0
[]
3,348,721,974
62,178
CLN: Lint for usage of Deprecation/FutureWarning
open
2025-08-23T19:47:30
2025-08-24T12:23:30
null
https://github.com/pandas-dev/pandas/pull/62178
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62178
https://github.com/pandas-dev/pandas/pull/62178
rhshadrach
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
[]
3,348,683,588
62,177
REF: use _cast_pointwise_result in map
open
2025-08-23T19:19:40
2025-08-23T19:54:21
null
https://github.com/pandas-dev/pandas/pull/62177
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62177
https://github.com/pandas-dev/pandas/pull/62177
NevroHelios
1
- [x] closes #62164 - [x] Passed the tests and added `test_base_map_dtype_preservation.py` - [x] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit). - [x] Added [type annotations](https://pandas.pydata.org/pandas-docs/dev/development/contributing_cod...
[]
0
0
0
0
0
0
0
0
[ "Hi @jbrockmendel ,\nI’ve updated the code so that it now preserves the original dtype. Because of this, some of the existing type-checking tests are failing — they were written for the old behavior. These tests might need to be updated to reflect the new semantics. Could you let me know if adjusting them in this w...
3,348,281,791
62,176
BUG: upgrade to PyQt6 to fix arm64 docker build
open
2025-08-23T14:02:16
2025-08-24T13:35:27
null
https://github.com/pandas-dev/pandas/pull/62176
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62176
https://github.com/pandas-dev/pandas/pull/62176
Alvaro-Kothe
1
- [x] closes #61037 - [ ] [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
[ "It seems that conda-forge's [pyqt](https://anaconda.org/conda-forge/pyqt) does not yet have version 6.\r\n\r\nI am not familiar with conda, is it possible to mix package from different repositories to ensure that we can still use pyqt 6?" ]
3,348,047,314
62,175
BUG: Fix Index.get_level_values() mishandling of boolean, pd.NA, np.nan, and pd.NaT levels
open
2025-08-23T11:18:16
2025-08-24T04:25:45
null
https://github.com/pandas-dev/pandas/pull/62175
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62175
https://github.com/pandas-dev/pandas/pull/62175
whyvineet
0
- [x] closes #62169
[]
0
0
0
0
0
0
0
0
[]
3,347,012,226
62,174
BUG/TST: Series round with dtype object
open
2025-08-22T22:56:55
2025-08-22T22:59:16
null
https://github.com/pandas-dev/pandas/pull/62174
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62174
https://github.com/pandas-dev/pandas/pull/62174
sharkipelago
0
- [x] addresses pointwise behavior talked about discussed in #61682 with @jbrockmendel - [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...
[]
0
0
0
0
0
0
0
0
[]
3,345,974,324
62,173
added to_csv function to public interface list (__all__) which was misssing earlier
closed
2025-08-22T16:12:55
2025-08-22T16:51:12
2025-08-22T16:46:46
https://github.com/pandas-dev/pandas/pull/62173
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62173
https://github.com/pandas-dev/pandas/pull/62173
Somanshu-Mahajan
2
I didn't find any issue regarding this so i am submitting this PR without issue number.
[]
0
0
0
0
0
0
0
0
[ "`to_csv` is not a top level pandas method. It exists on `DataFrame.to_csv`, so closing", "Ohh.... thankyou for letting me know @mroeschke ." ]
3,345,771,731
62,172
DOC: update the description for the 'docker build' command
open
2025-08-22T14:59:03
2025-08-22T19:13:58
null
https://github.com/pandas-dev/pandas/pull/62172
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62172
https://github.com/pandas-dev/pandas/pull/62172
tihanayo
1
- [x] closes #61037 (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...
[]
0
0
0
0
0
0
0
0
[ "I strongly recommend against relying on emulation for this issue. Emulation introduces significant performance overhead. I think its best to either change the PyQt5 version for arm64 or use PyQt6 instead, as I stated on https://github.com/pandas-dev/pandas/issues/61037#issuecomment-3215199355." ]
3,345,340,266
62,171
ENH: Add Polars engine to read_csv
closed
2025-08-22T12:33:23
2025-08-22T16:44:42
2025-08-22T16:44:41
https://github.com/pandas-dev/pandas/pull/62171
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62171
https://github.com/pandas-dev/pandas/pull/62171
Ayan9190
3
- Add PolarsParserWrapper class for polars CSV parsing - Update type annotations to include 'polars' as valid engine - Add polars compatibility checks and imports - Update readers.py to integrate polars engine - Add comprehensive test suite for polars engine - Add validation for unsupported options - Add document...
[]
0
0
0
0
0
0
0
0
[ "Is this AI?", "> Is this AI?\r\n\r\nCertainly has that \"I used AI to create this PR\" smell.\r\n", "We do not accept AI generated pull requests, closing" ]
3,345,321,050
62,170
“Fixed docstring note for date_range/timedelta_range per issue #62161”
closed
2025-08-22T12:26:46
2025-08-22T14:01:40
2025-08-22T14:01:40
https://github.com/pandas-dev/pandas/pull/62170
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62170
https://github.com/pandas-dev/pandas/pull/62170
sachinn854
0
This PR improves the documentation for pandas.date_range arguments. It clarifies the difference between start, end, periods, and freq, addressing user confusion. Closes #62161
[]
0
0
0
0
0
0
0
0
[]
3,343,555,956
62,169
BUG: Index.get_level_values() does not handle boolean, pd.NA, np.nan, or pd.NaT `level` correctly
open
2025-08-21T23:52:04
2025-08-24T12:29:09
null
https://github.com/pandas-dev/pandas/issues/62169
true
null
null
sfc-gh-mvashishtha
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", "Needs Triage" ]
0
0
0
0
0
0
0
0
[ "The issue stems from the `_validate_index_level` function:\n\nhttps://github.com/pandas-dev/pandas/blob/4665c10899bc413b639194f6fb8665a5c70f7db5/pandas/core/indexes/base.py#L2000-L2021\n\nThe problem arises because `isinstance(False, int)` and `isinstance(True, int)` both return `True`. Additionally, the inequalit...
3,343,455,132
62,168
>>> import warnings >>> warnings.filterwarnings("ignore", "\nPyarrow", DeprecationWarning) >>> import pandas
closed
2025-08-21T23:01:31
2025-08-22T01:25:42
2025-08-22T00:25:03
https://github.com/pandas-dev/pandas/issues/62168
true
null
null
hashmatr370-sys
3
null
[]
0
0
0
0
0
0
0
0
[ "What is the purpose of this?", "https://github.com/pandas-dev/pandas/issues/62168", "https://github.com/pandas-dev/pandas/issues/62168" ]
3,343,452,661
62,167
1911902583
closed
2025-08-21T23:00:13
2025-08-22T00:55:46
2025-08-22T00:25:09
https://github.com/pandas-dev/pandas/issues/62167
true
null
null
hashmatr370-sys
3
> Nice, thanks! This is https://github.com/pandas-dev/pandas/pull/57003 indeed. I looked for an open PR but didn't find it somehow ... _Originally posted by @lesteve in [#57082](https://github.com/pandas-dev/pandas/issues/57082#issuecomment-)_
[]
0
0
0
0
0
0
0
0
[ "Is this supposed to have some content?", "A2342", "0767563145" ]
3,343,245,514
62,166
REF: remove unnecessary case from maybe_downcast_to_dtype
closed
2025-08-21T21:27:43
2025-08-22T16:49:52
2025-08-22T16:47:31
https://github.com/pandas-dev/pandas/pull/62166
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62166
https://github.com/pandas-dev/pandas/pull/62166
jbrockmendel
1
All the non-test places we call this pass a np.dtype object, so we can remove the str case support
[ "Refactor" ]
0
0
0
0
0
0
0
0
[ "Thanks @jbrockmendel " ]
3,342,620,053
62,165
REF: get rid of ArrowStringArrayNumpySemantics
closed
2025-08-21T17:31:40
2025-08-22T16:51:44
2025-08-22T16:50:15
https://github.com/pandas-dev/pandas/pull/62165
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62165
https://github.com/pandas-dev/pandas/pull/62165
jbrockmendel
1
- [ ] 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...
[ "Refactor" ]
0
0
0
0
0
0
0
0
[ "Thanks @jbrockmendel " ]
3,341,927,427
62,164
REF: use _cast_pointwise_result in map
open
2025-08-21T14:13:42
2025-08-21T14:13:42
null
https://github.com/pandas-dev/pandas/issues/62164
true
null
null
jbrockmendel
0
Recently implemented _cast_pointwise_result is the correct idiom to use to retain dtype_backend in EA.map and any similar ops.
[]
0
0
0
0
0
0
0
0
[]
3,340,655,370
62,163
Backport PR #62152 on branch 2.3.x (DOC: prepare 2.3.2 whatsnew notes for release)
closed
2025-08-21T07:38:08
2025-08-21T08:36:49
2025-08-21T08:36:49
https://github.com/pandas-dev/pandas/pull/62163
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62163
https://github.com/pandas-dev/pandas/pull/62163
meeseeksmachine
0
Backport PR #62152: DOC: prepare 2.3.2 whatsnew notes for release
[ "Docs" ]
0
0
0
0
0
0
0
0
[]
3,339,878,599
62,162
CLN: Replace warnings with Pandas4Warning
open
2025-08-21T00:26:34
2025-08-23T19:51:35
null
https://github.com/pandas-dev/pandas/pull/62162
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62162
https://github.com/pandas-dev/pandas/pull/62162
rhshadrach
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
[]
3,339,837,083
62,161
DOC: date_range/timedelta_range confusing 3 out of 4 arguments note
open
2025-08-20T23:57:56
2025-08-21T00:36:49
null
https://github.com/pandas-dev/pandas/issues/62161
true
null
null
loicdiridollou
0
### 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.date_range.html#pandas.date_range https://pandas.pydata.org/do...
[ "Docs", "Needs Triage" ]
0
0
0
0
0
0
0
0
[]
3,339,768,196
62,160
REF: avoid inferred_type checks in plotting
closed
2025-08-20T23:09:55
2025-08-21T16:51:24
2025-08-21T16:12:18
https://github.com/pandas-dev/pandas/pull/62160
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62160
https://github.com/pandas-dev/pandas/pull/62160
jbrockmendel
1
- [x] closes #55897 (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...
[ "Visualization" ]
0
0
0
0
0
0
0
0
[ "Thanks @jbrockmendel " ]
3,339,722,814
62,159
DEPR: .str accessor with object dtype
open
2025-08-20T22:38:35
2025-08-20T22:38:35
null
https://github.com/pandas-dev/pandas/pull/62159
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62159
https://github.com/pandas-dev/pandas/pull/62159
jbrockmendel
0
- [x] closes #29710 (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/co...
[]
0
0
0
0
0
0
0
0
[]
3,339,672,171
62,158
API: indexing dates-with-datetime64
open
2025-08-20T22:07:16
2025-08-21T05:32:18
null
https://github.com/pandas-dev/pandas/issues/62158
true
null
null
jbrockmendel
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
[ "Hi @jbrockmendel, I was wondering if the correct fix here would be to make datetime.date objects never match a DatetimeIndex (so lookups always fail unless the user explicitly converts them to datetime64). Is this the right approach to resolve this issue, or should implicit matching still be supported? Please let ...
3,339,661,943
62,157
BUG/API: comparison datetime64-vs-dates
open
2025-08-20T22:02:13
2025-08-20T22:02:28
null
https://github.com/pandas-dev/pandas/issues/62157
true
null
null
jbrockmendel
0
```python ser = pd.Series(["2016-01-01"], dtype="date32[pyarrow]") ser2 = ser.astype("timestamp[ns][pyarrow]") ser3 = ser.astype("datetime64[ns]") assert (ser3 != ser[0]).all() assert (ser3 != ser).all() assert (ser == ser3).all() # <- uh-oh! inconsistent with reversed operation assert (ser == ser2).all() # inconsi...
[ "Bug", "Needs Triage" ]
0
0
0
0
0
0
0
0
[]
3,338,893,482
62,156
[backport 2.3.x] DOC: move and reword whatsnew note for replace fix (GH-57865) (#62153)
closed
2025-08-20T17:06:00
2025-08-21T07:16:14
2025-08-21T07:16:06
https://github.com/pandas-dev/pandas/pull/62156
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62156
https://github.com/pandas-dev/pandas/pull/62156
jorisvandenbossche
0
Backport of https://github.com/pandas-dev/pandas/pull/62153
[]
0
0
0
0
0
0
0
0
[]
3,338,825,615
62,155
REF: remove unnecessary string mixins
closed
2025-08-20T16:44:07
2025-08-21T16:51:05
2025-08-21T16:14:21
https://github.com/pandas-dev/pandas/pull/62155
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62155
https://github.com/pandas-dev/pandas/pull/62155
jbrockmendel
1
BaseStringArrayMethods is only mixed in two places, and one of those is unnecessary.
[ "Refactor" ]
0
0
0
0
0
0
0
0
[ "Thanks @jbrockmendel " ]
3,337,920,434
62,154
BUG: resampling with origin=end_date includes extra elements in the bucket
open
2025-08-20T12:21:22
2025-08-20T12:21:22
null
https://github.com/pandas-dev/pandas/issues/62154
true
null
null
vasil-pashov
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. - [ ] 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
[]
3,337,122,296
62,153
DOC: move and reword whatsnew note for replace fix (GH-57865)
closed
2025-08-20T08:35:52
2025-08-20T17:17:20
2025-08-20T17:03:42
https://github.com/pandas-dev/pandas/pull/62153
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62153
https://github.com/pandas-dev/pandas/pull/62153
jorisvandenbossche
2
We ended up backporting https://github.com/pandas-dev/pandas/pull/57865 after it was already merged, so also moving the whatsnew note here (and I also reworded it slightly, because AFAIK it's not limited to regex cases, given the example in https://github.com/pandas-dev/pandas/issues/61948)
[ "Docs" ]
0
0
0
0
0
0
0
0
[ "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 branch:\n```\ngit cherr...
3,337,086,880
62,152
DOC: prepare 2.3.2 whatsnew notes for release
closed
2025-08-20T08:24:59
2025-08-21T07:37:45
2025-08-21T07:37:42
https://github.com/pandas-dev/pandas/pull/62152
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62152
https://github.com/pandas-dev/pandas/pull/62152
jorisvandenbossche
0
xref https://github.com/pandas-dev/pandas/issues/62148
[ "Docs" ]
0
0
0
0
0
0
0
0
[]
3,336,356,931
62,151
Backport PR #62147 on branch 2.3.x (DOC: correct and rewrite string migration section on astype(str))
closed
2025-08-20T02:40:43
2025-08-20T07:18:20
2025-08-20T07:18:20
https://github.com/pandas-dev/pandas/pull/62151
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62151
https://github.com/pandas-dev/pandas/pull/62151
meeseeksmachine
0
Backport PR #62147: DOC: correct and rewrite string migration section on astype(str)
[ "Docs", "Strings" ]
0
0
0
0
0
0
0
0
[]
3,336,294,818
62,150
BUG: Inconsistent behaviour when merging reset-ed MultiIndex dataframe
open
2025-08-20T01:55:34
2025-08-20T01:55:34
null
https://github.com/pandas-dev/pandas/issues/62150
true
null
null
renkeven
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. - [ ] 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
[]
3,335,764,167
62,149
REF: get rid of StringArrayNumpySemantics
open
2025-08-19T21:35:50
2025-08-22T17:05:02
null
https://github.com/pandas-dev/pandas/pull/62149
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62149
https://github.com/pandas-dev/pandas/pull/62149
jbrockmendel
0
xref #62129 get one less variant
[]
0
0
0
0
0
0
0
0
[]
3,335,625,273
62,148
RLS: 2.3.2
closed
2025-08-19T20:40:14
2025-08-22T16:16:16
2025-08-22T16:12:21
https://github.com/pandas-dev/pandas/issues/62148
true
null
null
jorisvandenbossche
2
2.3.2 milestone: https://github.com/pandas-dev/pandas/milestone/121 I could do a 2.3.2 release tomorrow, just with what is available right now (and we can always do a 2.3.3 release later if needed) cc @pandas-dev/pandas-core
[ "Release" ]
2
0
0
0
0
0
0
0
[ "Released yesterday, and this time also announced it (with a focus on the opt-in 3.0 changes) on the mailing list, Linkedin and mastodon.\n(and fwiw I'll be offline next week)", "Thanks for making this happen!" ]
3,335,445,033
62,147
DOC: correct and rewrite string migration section on astype(str)
closed
2025-08-19T19:27:23
2025-08-20T02:44:41
2025-08-20T02:40:08
https://github.com/pandas-dev/pandas/pull/62147
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62147
https://github.com/pandas-dev/pandas/pull/62147
jorisvandenbossche
1
Tries to resolve https://github.com/pandas-dev/pandas/issues/61992
[ "Docs", "Strings" ]
0
0
0
0
0
0
0
0
[ "Thanks @jorisvandenbossche " ]
3,335,038,521
62,146
BUG: Fails to Build on Raspberry Pi 3 (tested both 2.1.4, 2.3.1 and main Branch)
open
2025-08-19T16:49:22
2025-08-19T17:51:28
null
https://github.com/pandas-dev/pandas/issues/62146
true
null
null
luckylinux
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
[ "Seems that some of the Errors could be due to the the OOM Killer.\n\nI fail to see why that would happen though. Granted RAM is only 1GB (but it did build before, like ~ 1.5 Years ago or so). And I also allocated 8GB SWAP to make sure that there would be no Edge Cases 😕.\n\nAnyways, in most cases it fails at the ...
3,334,809,071
62,145
fix enum typing from _lib
open
2025-08-19T15:28:47
2025-08-24T07:02:34
null
https://github.com/pandas-dev/pandas/pull/62145
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62145
https://github.com/pandas-dev/pandas/pull/62145
Dr-Irv
1
`mypy` is fixing how they handle `enum` types, and the fix revealed an issue with how we handle them. See https://github.com/python/mypy/pull/19687#issuecomment-3200527533
[]
0
0
0
0
0
0
0
0
[ "I reviewed the pull request #62145: \"fix enum typing from _lib\". \r\n\r\n**Summary:**\r\n\r\n- This PR updates enum typing in the `_libs` module to align with recent changes in `mypy` (see python/mypy#19687). \r\n- It removes previously added `# type: ignore` comments and fixes type annotations for enum handli...
3,334,753,694
62,144
BUG / API: setitem on pandas object fails if underlying numpy array is read-only
open
2025-08-19T15:11:31
2025-08-19T18:46:50
null
https://github.com/pandas-dev/pandas/issues/62144
true
null
null
jorisvandenbossche
3
Consider the following example: ```python >>> ser = pd.Series(np.asarray(pa.array([1, 2, 3])), copy=False) >>> ser 0 1 1 2 2 3 dtype: int64 >>> ser.iloc[0] = 10 ... File ~/scipy/repos/pandas/pandas/core/internals/blocks.py:1139, in Block.setitem(self, indexer, value) 1137 casted = casted[0, ...] 113...
[ "Indexing", "API Design" ]
0
0
0
0
0
0
0
0
[ "if i wanted to prevent mutation, setting the underlying array to readonly would be how i would do it", "While that is certainly a trick that sometimes works, I would consider that relying on internal details, as we in the past copied quite generously, and now with CoW might do a copy before performing the setite...
3,333,226,449
62,143
DOC: Clarify is_scalar docstring to specify scalar vs non-scalar and add Enum example (GH#62063)
open
2025-08-19T07:22:18
2025-08-24T13:57:52
null
https://github.com/pandas-dev/pandas/pull/62143
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62143
https://github.com/pandas-dev/pandas/pull/62143
Aniketsy
1
(GH#62063) This PR updates the docstring for is_scalar to better reflect its actual behavior in pandas. Clearly differentiates between values considered scalars and values treated as non-scalars. Explicitly documents that the following are treated as non-scalars np.ndarray, list , tuple , pandas.Series. ...
[]
1
0
0
0
0
0
0
0
[ "Hi @rhshadrach, as per your suggestion on the issue, I’ve applied the changes. Could you please take a look and let me know if this correctly states and enhances the doc for the issue?\r\nI’m happy to make further adjustments based on your feedback." ]
3,332,198,888
62,142
DEPR: Categorical with values not present in categories
open
2025-08-18T21:30:22
2025-08-21T20:28:27
null
https://github.com/pandas-dev/pandas/pull/62142
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62142
https://github.com/pandas-dev/pandas/pull/62142
jbrockmendel
0
- [x] closes #40996 - [x] closes #59899 - [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.ht...
[]
0
0
0
0
0
0
0
0
[]
3,330,046,734
62,141
ENH: Consistent `name` property for the iterates in `DataFrameGroupBy`
open
2025-08-18T10:00:32
2025-08-20T03:08:22
null
https://github.com/pandas-dev/pandas/issues/62141
true
null
null
FelixBenning
3
### Feature Type - [ ] Adding new functionality to pandas - [x] Changing existing functionality in pandas - [ ] Removing existing functionality in pandas ### Problem Description If a dataframe is grouped by a single column sometimes its `name` is a numeric scalar and sometimes a single element tuple. This should ...
[ "Bug", "Enhancement", "Groupby", "API - Consistency" ]
0
0
0
0
0
0
0
0
[ "Thanks for the report. For `apply`, I believe we want to move away from pinning name on the passed DataFrame. However for `GroupBy.groups`, I'm positive on changing the keys to be tuples in the case where the user is grouping by a 1-element iterable. PRs to fix are welcome!", "I am a bit confused why you want to...
3,329,939,360
62,140
BUG: type error in `df.attrs.update()`
closed
2025-08-18T09:31:00
2025-08-18T21:25:54
2025-08-18T21:25:40
https://github.com/pandas-dev/pandas/issues/62140
true
null
null
janosh
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", "Typing", "metadata" ]
0
0
0
0
0
0
0
0
[ "`ty` is in alpha and raises many false positives. Do you experience the same with other type checkers? If so report back and we can reconsider. Closing for now." ]
3,329,623,081
62,139
BUG: Fix to_csv microsecond inconsistency (#62111)
open
2025-08-18T07:58:24
2025-08-18T14:05:08
null
https://github.com/pandas-dev/pandas/pull/62139
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62139
https://github.com/pandas-dev/pandas/pull/62139
prazian
0
- [x] closes #62111 - [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]...
[]
0
0
0
0
0
0
0
0
[]
3,329,292,249
62,138
BUG: Preserve day freq on DatetimeIndex subtraction
open
2025-08-18T06:05:44
2025-08-18T06:06:44
null
https://github.com/pandas-dev/pandas/pull/62138
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62138
https://github.com/pandas-dev/pandas/pull/62138
23f-1000003
1
- [ ] 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
[ "I suggested some changes" ]
3,329,239,201
62,137
ENH: Rename DataFrame._append to _append_internal
closed
2025-08-18T05:41:28
2025-08-21T20:36:04
2025-08-21T20:35:56
https://github.com/pandas-dev/pandas/pull/62137
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62137
https://github.com/pandas-dev/pandas/pull/62137
whyvineet
1
- [x] closes #57936
[]
0
0
0
0
0
0
0
0
[ "thanks @whyvineet " ]
3,329,159,586
62,136
DOC: Deprecate empty string defaults in DataFrame.join suffixes
open
2025-08-18T04:55:03
2025-08-22T00:01:27
null
https://github.com/pandas-dev/pandas/pull/62136
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62136
https://github.com/pandas-dev/pandas/pull/62136
Roline-Stapny
0
- [X] closes [#61294 ](https://github.com/pandas-dev/pandas/issues/61294) - [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/deve...
[]
0
0
0
0
0
0
0
0
[]
3,328,849,299
62,135
BUG: Fix groupby.apply() dropping _metadata from subclassed DataFrame
open
2025-08-18T01:09:31
2025-08-20T03:15:52
null
https://github.com/pandas-dev/pandas/pull/62135
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62135
https://github.com/pandas-dev/pandas/pull/62135
MengAiDev
3
When extending pandas.DataFrame by subclassing, most operations preserve the _metadata attributes. This fix ensures that groupby.apply() also preserves these fields, making it consistent with other groupby operations like groupby.sum(). Fixes #62134
[]
0
0
0
0
0
0
0
0
[ "> Thanks for the PR! Why not call `__finalize__` instead?\r\n\r\nThanks!", "@rhshadrach Why this failed? [Unit Tests / Linux-32-bit (pull_request)](https://github.com/pandas-dev/pandas/actions/runs/17032074576/job/48276764930?pr=62135) and [Unit Tests / Pyodide build (pull_request)](https://github.com/pandas-dev...
3,328,402,711
62,134
BUG: groupby.apply() drops _metadata from subclassed DataFrame
open
2025-08-17T15:03:32
2025-08-17T15:37:00
null
https://github.com/pandas-dev/pandas/issues/62134
true
null
null
JBGreisman
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", "metadata", "Needs Triage" ]
0
0
0
0
0
0
0
0
[]
3,327,708,161
62,133
DOC: Updated shift docstring to mark Series behavior
closed
2025-08-16T22:26:16
2025-08-22T23:00:13
2025-08-18T15:50:35
https://github.com/pandas-dev/pandas/pull/62133
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62133
https://github.com/pandas-dev/pandas/pull/62133
sharkipelago
1
- [x] closes #61955
[ "Docs" ]
0
0
0
0
0
0
0
0
[ "Thanks @sharkipelago " ]
3,327,308,703
62,132
DOC: Clarify that is_scalar treats Enum members as scalars
closed
2025-08-16T14:03:22
2025-08-17T19:52:01
2025-08-17T18:42:39
https://github.com/pandas-dev/pandas/pull/62132
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62132
https://github.com/pandas-dev/pandas/pull/62132
shrutisachan08
4
## Description This PR updates the `is_scalar` docstring to clarify that Enum members are treated as scalars, addressing the confusion reported in #62063. The `is_scalar` function already correctly treats Enum members as scalars (via `isinstance(val, Enum)` in the implementation), but the documentation was unclea...
[]
0
0
0
0
0
0
0
0
[ "pre-commit.ci autofix", "This looks like AI. Please don’t do that.", "@jbrockmendel May I please know which section you are referring to .", "Agreed, closing as it appears this is AI generated" ]
3,327,046,500
62,131
ENH: Enable destination aware scope for dataset attributes metadata propagation copy routines
open
2025-08-16T08:40:19
2025-08-20T23:28:52
null
https://github.com/pandas-dev/pandas/pull/62131
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62131
https://github.com/pandas-dev/pandas/pull/62131
dangreb
7
As noted in project docstrings, **NDFrame.attrs** is meant to store properties related to the dataset. Therefore it should be important that during propagation to derived datasets, copy routines can have access to the destination object, to witch it's new formulation will then refeer to. - A lean and isolated fix m...
[]
0
0
0
0
0
0
0
0
[ "Is this AI? Looks like AI, like a previous issue of yours that was closed.", "> Is this AI? Looks like AI, like a previous issue of yours that was closed.\r\n\r\nHi hello, not AI, it's just me! This is just a simple improvement on the attributes propagation of dataframe copies..", "Ok, can you add a test for w...
3,326,937,635
62,130
Resolved issue 62094
open
2025-08-16T06:07:46
2025-08-17T21:54:05
null
https://github.com/pandas-dev/pandas/pull/62130
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62130
https://github.com/pandas-dev/pandas/pull/62130
saw1998
0
Using default frequency as difference between two TimeDeltas - [ ] 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 p...
[]
0
0
0
0
0
0
0
0
[]
3,326,707,889
62,129
REF/API: Move ArrowDtype(pa.foo_string()) into StringDtype(...)
open
2025-08-16T01:28:29
2025-08-18T16:34:19
null
https://github.com/pandas-dev/pandas/issues/62129
true
null
null
jbrockmendel
7
This came up when reviewing #62118. There are too many StringDtypes and FooStringArrays. Apparently pd.ArrowDtype can accommodate some specific types of pyarrow strings that `StringDtype(storage="pyarrow")` cannot. I propose that we 1) Extend pd.StringDtype (and ArrowStringArray) to allow it to support the specific...
[]
0
0
0
0
0
1
0
0
[ "Getting rid of the NumpySemantics classes is straightforward. Combining the ArrowStrimgArray into StringArray would take real effort/thought", "Would e.g. `Series[datetime[pyarrow]].dt.strftime` start to return `StringDtype` instead of `ArrowDtype`?\n\nI would prefer to do this once we have \"the logical type sy...
3,325,947,530
62,128
Backport PR #62124 on branch 2.3.x (CI/BLD: don't use strict xfail for '%m.%Y' format in test_hypothesis_delimited_date)
closed
2025-08-15T18:07:19
2025-08-15T18:59:11
2025-08-15T18:59:11
https://github.com/pandas-dev/pandas/pull/62128
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62128
https://github.com/pandas-dev/pandas/pull/62128
meeseeksmachine
0
Backport PR #62124: CI/BLD: don't use strict xfail for '%m.%Y' format in test_hypothesis_delimited_date
[ "Build" ]
0
0
0
0
0
0
0
0
[]
3,325,589,864
62,127
#61382: FIX MultiIndex.difference for pyarrow-backed Timestamps
closed
2025-08-15T15:30:57
2025-08-18T15:22:28
2025-08-17T22:25:32
https://github.com/pandas-dev/pandas/pull/62127
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62127
https://github.com/pandas-dev/pandas/pull/62127
arpibad
1
- Override MultiIndex.difference to handle Timestamp[ns][pyarrow] levels - Ensure proper comparison without converting all levels to pandas types - Add pytest test for difference with pyarrow-backed MultiIndex
[]
0
0
0
0
0
0
0
0
[ "@arpibad you don't want to keep pursuing this?" ]
3,325,544,451
62,126
CI/BLD: fix upload of arm64 windows wheels
closed
2025-08-15T15:14:53
2025-08-15T18:30:04
2025-08-15T17:54:51
https://github.com/pandas-dev/pandas/pull/62126
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62126
https://github.com/pandas-dev/pandas/pull/62126
jorisvandenbossche
1
The upload step is currently failing for the arm64_win wheels, see eg https://github.com/pandas-dev/pandas/actions/runs/16926890715/job/47964412481. And I suppose this should fix the issue (the other platforms use mamba and also install anaconda-client)
[ "Build" ]
0
0
0
0
0
0
0
0
[ "Thanks @jorisvandenbossche " ]
3,325,541,181
62,125
DOC: Improve kwargs docs for parquet engines
closed
2025-08-15T15:13:45
2025-08-15T18:10:28
2025-08-15T18:10:23
https://github.com/pandas-dev/pandas/pull/62125
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62125
https://github.com/pandas-dev/pandas/pull/62125
ProgerDav
3
- [ ] closes #49739 - [ ] [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
[ "/preview", "Website preview of this PR available at: https://pandas.pydata.org/preview/pandas-dev/pandas/62125/", "Thanks @ProgerDav " ]
3,325,519,276
62,124
CI/BLD: don't use strict xfail for '%m.%Y' format in test_hypothesis_delimited_date
closed
2025-08-15T15:05:05
2025-08-16T08:25:28
2025-08-15T18:06:47
https://github.com/pandas-dev/pandas/pull/62124
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62124
https://github.com/pandas-dev/pandas/pull/62124
jorisvandenbossche
5
Closes https://github.com/pandas-dev/pandas/issues/62093 The last days, some linux wheel builds have been failing while testing with: ``` ________________ test_hypothesis_delimited_date[%m %Y-False-.] _________________ [XPASS(strict)] parse_datetime_string cannot reliably tell whether e.g. %m.%Y is a float...
[ "Build" ]
0
0
0
0
0
0
0
0
[ "i think ive seen this locally too a couple times.\r\n\r\n@mroeschke didn't you have a recent PR that tinkered with hypothesis settings?", "Thanks @jorisvandenbossche ", "do we have any other ideas to troubleshoot before the cement sets on this? strict=False makes a test pretty useless", "> do we have any ot...
3,325,380,685
62,123
Use jinja2 FileSystemLoader instead of PackageLoader for compat newer meson-python and editable installs
closed
2025-08-15T14:05:25
2025-08-15T18:28:14
2025-08-15T16:46:56
https://github.com/pandas-dev/pandas/pull/62123
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62123
https://github.com/pandas-dev/pandas/pull/62123
jorisvandenbossche
1
xref https://github.com/pandas-dev/pandas/pull/62086, https://github.com/pandas-dev/pandas/pull/62110 and https://github.com/mesonbuild/meson-python/issues/716 Currently, if you use a more recent meson-python version than the 0.13 we have pinned in the dev env yml file, and install pandas in an editable mode in you ...
[ "Build", "Styler" ]
0
0
0
0
0
0
0
0
[ "Thanks @jorisvandenbossche " ]
3,325,319,449
62,122
Fix typo in the test name
closed
2025-08-15T13:40:33
2025-08-15T18:09:33
2025-08-15T18:09:28
https://github.com/pandas-dev/pandas/pull/62122
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62122
https://github.com/pandas-dev/pandas/pull/62122
kajarenc
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 - [X] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/con...
[ "Testing" ]
0
0
0
0
0
0
0
0
[ "This change is part of PyData Yerevan Open source sprint :) #pydatayerevan\r\n\r\nCC: @surenpoghosian ", "Thanks @kajarenc " ]
3,324,839,717
62,121
BUG: Addition of __set_module__ breaks PyCharm PyDev debugger functionalities
open
2025-08-15T09:36:01
2025-08-15T17:21:50
null
https://github.com/pandas-dev/pandas/issues/62121
true
null
null
dangreb
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...
[]
0
0
0
0
0
0
0
0
[ "Just to be clear, the issue you have is not related to the technical use of the `@set_module` decorator, I suppose? But because of changing the value for `pd.DataFrame.__module__` from 'pandas.core.frame' to 'pandas' (regardless of how we did that)\n\nWe know that some people will rely on a hardcoded 'pandas.core....
3,324,827,535
62,120
WEB: fix discussion link in PDEP-6
closed
2025-08-15T09:29:15
2025-08-15T18:29:31
2025-08-15T18:11:01
https://github.com/pandas-dev/pandas/pull/62120
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62120
https://github.com/pandas-dev/pandas/pull/62120
jorisvandenbossche
1
Linking to the wrong issue
[ "Web" ]
0
0
0
0
0
0
0
0
[ "Thanks @jorisvandenbossche " ]
3,324,788,054
62,119
PERF: Importing pandas_parser lib takes 50MB of memory
closed
2025-08-15T09:14:07
2025-08-16T14:15:53
2025-08-16T14:15:53
https://github.com/pandas-dev/pandas/issues/62119
true
null
null
LucaCerina
5
### 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
[ "Tested also on a Linux machine, got the same results. \n\n```\nLine # Mem usage Increment Occurrences Line Contents\n=============================================================\n 197 23.051 MiB 23.051 MiB 1 @profile\n 198 def import_8():\n 19...
3,324,748,731
62,118
Switch default string storage from python to pyarrow (if installed) also for NA-variant of the StringDtype
open
2025-08-15T08:59:32
2025-08-16T07:25:12
null
https://github.com/pandas-dev/pandas/pull/62118
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62118
https://github.com/pandas-dev/pandas/pull/62118
jorisvandenbossche
0
Closes https://github.com/pandas-dev/pandas/issues/60287 (need to add whatsnew)
[ "Strings", "NA - MaskedArrays" ]
0
0
0
0
0
0
0
0
[]
3,324,694,311
62,117
fix(dtypes): ensure consistent behavior of is_string_dtype for Categorical
open
2025-08-15T08:30:37
2025-08-15T08:30:37
null
https://github.com/pandas-dev/pandas/pull/62117
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62117
https://github.com/pandas-dev/pandas/pull/62117
MengAiDev
0
- Handle Categorical series and CategoricalDtype consistently in is_string_dtype - Add tests to verify consistent results for various Categorical scenarios Fix: #62109
[]
0
0
0
0
0
0
0
0
[]
3,324,678,909
62,116
[backport 2.3.x] BUG: Fix Series.str.contains with compiled regex on Arrow string dtype (#61946)
closed
2025-08-15T08:22:14
2025-08-15T09:21:00
2025-08-15T09:20:58
https://github.com/pandas-dev/pandas/pull/62116
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62116
https://github.com/pandas-dev/pandas/pull/62116
jorisvandenbossche
0
Backport of https://github.com/pandas-dev/pandas/pull/61946
[]
0
0
0
0
0
0
0
0
[]
3,324,580,589
62,115
[backport 2.3.x] BUG(CoW): also raise for chained assignment for .at / .iat (#62074)
closed
2025-08-15T07:24:29
2025-08-15T12:54:29
2025-08-15T12:54:25
https://github.com/pandas-dev/pandas/pull/62115
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62115
https://github.com/pandas-dev/pandas/pull/62115
jorisvandenbossche
0
Backport of https://github.com/pandas-dev/pandas/pull/62074
[]
0
0
0
0
0
0
0
0
[]
3,324,562,943
62,114
[backport 2.3.x] BUG/DEPR: logical operation with bool and string (#61995)
closed
2025-08-15T07:12:13
2025-08-19T18:39:56
2025-08-19T18:12:59
https://github.com/pandas-dev/pandas/pull/62114
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62114
https://github.com/pandas-dev/pandas/pull/62114
jorisvandenbossche
0
Backport of https://github.com/pandas-dev/pandas/pull/61995
[]
0
0
0
0
0
0
0
0
[]
3,324,556,214
62,113
[backport 2.3.x] BUG: fix Series.str.fullmatch() and Series.str.match() with a compiled regex failing with arrow strings (#61964)
closed
2025-08-15T07:07:40
2025-08-15T08:19:37
2025-08-15T08:19:33
https://github.com/pandas-dev/pandas/pull/62113
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62113
https://github.com/pandas-dev/pandas/pull/62113
jorisvandenbossche
0
Backport of https://github.com/pandas-dev/pandas/pull/61964
[]
0
0
0
0
0
0
0
0
[]
3,324,445,179
62,112
Fix inconsistent results for pd.api.types.is_string_dtype
closed
2025-08-15T05:58:18
2025-08-15T07:45:21
2025-08-15T07:45:15
https://github.com/pandas-dev/pandas/pull/62112
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62112
https://github.com/pandas-dev/pandas/pull/62112
MengAiDev
0
## Description This PR fixes an inconsistency in `pd.api.types.is_string_dtype()` when passed a Categorical series directly versus the dtype of that series. Currently: ```python import pandas as pd series = pd.Categorical(['A', 'B', 'C']) print(f"is_string_dtype(series): {pd.api.types.is_string_dtype(series...
[]
0
0
0
0
0
0
0
0
[]
3,324,079,951
62,111
BUG: to_csv uses inconsistent microsecond format for datetimes with timezones
open
2025-08-15T01:48:25
2025-08-18T14:07:32
null
https://github.com/pandas-dev/pandas/issues/62111
true
null
null
insperatum
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", "Needs Triage" ]
0
0
0
0
0
0
0
0
[ "take", "PR https://github.com/pandas-dev/pandas/pull/62139 ready for review" ]
3,323,695,087
62,110
CI: Always install pandas in non-editable mode in CI
closed
2025-08-14T21:53:32
2025-08-21T16:16:08
2025-08-21T16:16:03
https://github.com/pandas-dev/pandas/pull/62110
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62110
https://github.com/pandas-dev/pandas/pull/62110
mroeschke
2
May be needed to avoid the jinja2 errors in CI in https://github.com/pandas-dev/pandas/pull/62086, xref https://github.com/mesonbuild/meson-python/issues/716
[ "CI" ]
0
0
0
0
0
0
0
0
[ "While I think it is a good idea in general to not use editable installs in CI (because normal installs is what the typical user uses as well), we should not do that just because to get rid of this error, we should still fix that issue as well .. Because anyone developing with an editable install will still run int...
3,323,646,269
62,109
BUG: `pd.api.types.is_string_dtype()` returns inconsistent results for Categorical series vs dtype
open
2025-08-14T21:25:36
2025-08-14T21:36:19
null
https://github.com/pandas-dev/pandas/issues/62109
true
null
null
nsarang
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
[]
3,323,512,991
62,108
DOC: Website should copy code only
open
2025-08-14T20:27:34
2025-08-20T18:36:37
null
https://github.com/pandas-dev/pandas/pull/62108
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62108
https://github.com/pandas-dev/pandas/pull/62108
DoNguyenHung
1
- [x] closes #56388 - [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
[ "pre-commit.ci autofix" ]
3,323,033,095
62,107
`Documentation Improvement: Clarify setup steps and troubleshooting in CONTRIBUTING.md`
closed
2025-08-14T17:30:30
2025-08-16T14:27:22
2025-08-16T14:27:22
https://github.com/pandas-dev/pandas/issues/62107
true
null
null
Prasad-JB
1
While setting up Pandas for local development, I noticed the docs assume familiarity with certain tools and skip details that could benefit new contributors. Observations: The prerequisites section doesn’t specify the recommended Python version. Instructions lack an example `pip install -e` . for editable installs. ...
[ "Docs", "Needs Triage" ]
0
0
0
0
0
0
0
0
[ "Thanks for the xref @rcomer, much appreciated. Closing as spam." ]
3,323,015,525
62,106
Documentation Improvement: Clarify steps for setting up local development environment in CONTRIBUTING.md
closed
2025-08-14T17:25:28
2025-08-15T09:58:01
2025-08-14T19:51:50
https://github.com/pandas-dev/pandas/issues/62106
true
null
null
Prasad-JB
2
While setting up Pandas for local development, I noticed that the current documentation assumes prior familiarity with certain tools and skips a few details that might be useful for new contributors. Observations: The prerequisites section does not explicitly mention the recommended Python version. The instructions ...
[]
0
0
0
0
0
0
0
0
[ "looks like you've opened another issue about this. closing this one.", "Thanks for the update! 👍 I understand this has been consolidated with the other issue. I’ll follow the active discussion there and contribute as needed." ]
3,322,672,274
62,105
ENH: EA._cast_pointwise_result
closed
2025-08-14T15:38:38
2025-08-20T16:20:37
2025-08-20T16:00:17
https://github.com/pandas-dev/pandas/pull/62105
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62105
https://github.com/pandas-dev/pandas/pull/62105
jbrockmendel
3
- [x] closes #59895 (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...
[ "ExtensionArray" ]
0
0
0
0
0
0
0
0
[ "The pyarrow duration stuff is caused by an upstream issue https://github.com/apache/arrow/issues/40620", "@rhshadrach i think you had a recent issue/pr involving retaining nullable dtypes in a .map?", "Thanks @jbrockmendel " ]
3,320,514,961
62,104
CLN: Enforce deprecation of arg in Series.map
closed
2025-08-14T02:30:41
2025-08-16T13:33:45
2025-08-16T13:33:01
https://github.com/pandas-dev/pandas/pull/62104
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62104
https://github.com/pandas-dev/pandas/pull/62104
rhshadrach
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...
[ "Clean", "Apply", "Series" ]
0
0
0
0
0
0
0
0
[ "I think this deprecation is only added for 3.0 (https://github.com/pandas-dev/pandas/pull/61264), so to be removed only in pandas 4.0? \r\n\r\nIt should maybe be converted to use one of the dedicated warning classes now, though (have to read up on the latest PDEP-17 implementation)", "Doh, thanks! I have a branc...
3,319,749,137
62,103
ENH: Introduce `pandas.col`
closed
2025-08-13T20:16:39
2025-08-22T16:54:51
2025-08-22T16:50:56
https://github.com/pandas-dev/pandas/pull/62103
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62103
https://github.com/pandas-dev/pandas/pull/62103
MarcoGorelli
10
xref @jbrockmendel 's comment https://github.com/pandas-dev/pandas/issues/56499#issuecomment-3180770808 I'd also discussed this with @phofl , @WillAyd , and @jorisvandenbossche (who originally showed us something like this in Basel at euroscipy 2023) Demo: ```python import pandas as pd from datetime import da...
[ "Enhancement" ]
0
0
0
0
0
5
12
1
[ "> For the type hints to show up correctly, extra work should be done in `pandas-stubs`. But, I think it should be possible to develop tooling to automate the `Expr` docs and types based on the `Series` ones (going to cc @Dr-Irv here too then)\r\n\r\nWhen this is added, and then released, `pandas-stubs` can be upda...
3,319,182,547
62,102
DEPR: Deprecate passing positional arguments in {DataFrame,Series}.groupby (except `by` and `level`)
open
2025-08-13T16:56:50
2025-08-18T10:11:28
null
https://github.com/pandas-dev/pandas/pull/62102
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62102
https://github.com/pandas-dev/pandas/pull/62102
MarcoGorelli
1
- [ ] 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
[ "thanks for your review\r\n\r\nthat one's not boolean and doesn't affect the return type so tbh i feel less strongly about it" ]
3,318,801,943
62,101
ENH: Warn on unused arguments to resample
closed
2025-08-13T14:57:48
2025-08-13T17:20:35
2025-08-13T16:07:18
https://github.com/pandas-dev/pandas/pull/62101
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62101
https://github.com/pandas-dev/pandas/pull/62101
jbrockmendel
1
- [ ] 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...
[ "Resample", "Warnings" ]
0
0
0
0
0
0
0
0
[ "Thanks @jbrockmendel " ]
3,316,622,346
62,100
BUG: `tz_localize(None)` incorrectly converts timestamps when using `pyarrow` dtypes
closed
2025-08-13T01:34:44
2025-08-14T03:04:20
2025-08-14T03:04:20
https://github.com/pandas-dev/pandas/issues/62100
true
null
null
dhirschfeld
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", "Needs Triage" ]
0
0
0
0
0
0
0
0
[ "```pycon\n>>> pd.concat([df['value_timestamp'], expected, actual], keys=['original', 'numpy', 'pyarrow'], axis=1)\n original numpy pyarrow\n0 2025-08-13 00:00:00+10:00 2025-08-13 00:00:00 2025-08-12 14:00:00\n1 2025-08-13 01:00:00+10:00 2025-08-13 01:00:00 2025-08-...
3,316,066,112
62,099
DOC: Sort the pandas API reference navbar in alphabetical order
open
2025-08-12T21:52:06
2025-08-19T20:47:57
null
https://github.com/pandas-dev/pandas/pull/62099
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62099
https://github.com/pandas-dev/pandas/pull/62099
DoNguyenHung
1
- [x] closes #59164 - [ ] [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
[ "pre-commit.ci autofix" ]
3,316,011,489
62,098
ENH: Remove the DataFrame.attrs saving to parquet metadata on Pandas' side
open
2025-08-12T21:30:17
2025-08-12T21:57:38
null
https://github.com/pandas-dev/pandas/issues/62098
true
null
null
rmnskb
0
### Feature Type - [ ] Adding new functionality to pandas - [ ] Changing existing functionality in pandas - [x] Removing existing functionality in pandas ### Problem Description #54321 raised the issue regarding the `DataFrame.attrs` persistence in `.parquet` metadata, that was resolved in #54346. In apache/arro...
[ "Enhancement", "IO Parquet", "metadata", "Needs Triage" ]
0
0
0
0
0
0
0
0
[]
3,315,587,009
62,097
DEPR: rename 'unit' keyword in to_datetime etc
open
2025-08-12T19:27:16
2025-08-24T12:27:53
null
https://github.com/pandas-dev/pandas/issues/62097
true
null
null
jbrockmendel
4
to_datetime, to_timedelta, Timestamp, and Timedelta have a `unit` keyword that causes confusion because the term 'unit' is overloaded. The keyword refers to how we interpret integer arguments, while the result's obj.unit attribute refers to the resolution of the result. Confusion e.g. #60371. Update: also the meanin...
[ "Deprecate", "Needs Discussion" ]
0
0
0
0
0
0
0
0
[ "What if we made `unit` apply to non-numeric arguments? I.e. if a non-numeric argument is provided we convert to the user-specified unit? This would allow us to avoid code churn.", "> What if we made unit apply to non-numeric arguments? I.e. if a non-numeric argument is provided we convert to the user-specified u...
3,315,227,231
62,096
BUG: Preserve day freq on DatetimeIndex subtraction
open
2025-08-12T17:40:59
2025-08-20T16:55:57
null
https://github.com/pandas-dev/pandas/pull/62096
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62096
https://github.com/pandas-dev/pandas/pull/62096
akshat62
1
- [x] closes #62094 - [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]...
[]
0
0
0
0
0
0
0
0
[ "@mroeschke @jbrockmendel Please review." ]
3,315,219,363
62,095
BUG: TimedeltaIndex.shift() infers freq when possible (GH#62094)
closed
2025-08-12T17:38:16
2025-08-12T18:43:13
2025-08-12T18:43:13
https://github.com/pandas-dev/pandas/pull/62095
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62095
https://github.com/pandas-dev/pandas/pull/62095
Aniketsy
0
(GH#62094) This PR fixes a regression on main where TimedeltaIndex.shift() raised a NullFrequencyError if the index had freq=None, even when the index was regular and its frequency could be inferred. Please let me know if my approach or fix needs any improvements . I’m open to feedback and happy to make changes bas...
[]
0
0
0
0
0
0
0
0
[]
3,314,905,948
62,094
BUG: In main, TimedeltaIndex.shift() requires freq in the index, but it may not be available because it was computed
open
2025-08-12T15:52:45
2025-08-19T03:01:54
null
https://github.com/pandas-dev/pandas/issues/62094
true
null
null
Dr-Irv
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", "Timedelta", "Blocker", "good first issue" ]
0
0
0
0
0
0
0
0
[ "Should be straightforward to add this case to _get_arithmetic_result_freq. Marking as Good First Issue.", "Hi, I’m new to open source and would like to work on this issue. Could you please assign it to me?", "Hello all,\nThis is the first time I am attempting for open source contribution. Any suggestions or h...
3,313,828,239
62,093
BUILD: Nightly wheel building failed for some platforms
closed
2025-08-12T11:36:04
2025-08-15T18:06:48
2025-08-15T18:06:48
https://github.com/pandas-dev/pandas/issues/62093
true
null
null
djhoese
3
### Installation check - [x] I have read the [installation guide](https://pandas.pydata.org/pandas-docs/stable/getting_started/install.html#installing-pandas). ### Platform Github Actions ubuntu-latest ### Installation Method pip install ### pandas Version nightly wheel (see below) ### Python Version 3.12 ##...
[ "Build" ]
0
0
0
0
0
0
0
0
[ "I'm rerunning the CI job I had that failed. It looks like (see the logs above) that the wheel was not available and the sdist tarball was used instead.\n\nOh...nightly wheel builds failed:\n\nhttps://github.com/pandas-dev/pandas/actions/runs/16898335562", "Thanks for raising the issue. I see that indeed some of ...
3,313,145,004
62,092
BUG: Fix assert_frame_equal with check_dtype=False for pd.NA with different dtypes
open
2025-08-12T08:32:14
2025-08-12T10:12:23
null
https://github.com/pandas-dev/pandas/pull/62092
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62092
https://github.com/pandas-dev/pandas/pull/62092
0x3vAD
0
- [x] closes #61473 - [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]...
[]
0
0
0
0
0
0
0
0
[]
3,312,426,913
62,091
DOC: Improve consistency in terminology and fix minor typos in documentation
closed
2025-08-12T03:56:22
2025-08-18T15:21:58
2025-08-18T15:21:48
https://github.com/pandas-dev/pandas/pull/62091
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62091
https://github.com/pandas-dev/pandas/pull/62091
maitreytalware
2
Fixed minor typos in files/documentation
[]
0
0
0
0
0
0
0
0
[ "This is fine, but in the future please stick to clear typos and avoid stuff like \"IO\" vs \"I/O\".", "thanks @maitreytalware " ]
3,312,016,591
62,090
DOC: Add to_julian_date to DatetimeIndex methods listing
closed
2025-08-12T00:09:57
2025-08-14T01:49:06
2025-08-13T16:08:38
https://github.com/pandas-dev/pandas/pull/62090
true
https://api.github.com/repos/pandas-dev/pandas/pulls/62090
https://github.com/pandas-dev/pandas/pull/62090
echedey-ls
1
First time contributor here. - ~[ ] closes #xxxx (Replace xxxx with the GitHub issue number)~ No issue related - ~[ ] [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](htt...
[ "Docs" ]
0
0
0
0
0
0
0
0
[ "Thanks @echedey-ls " ]
End of preview. Expand in Data Studio

Pandas GitHub Issues

This dataset contains 5,000 GitHub issues collected from the pandas-dev/pandas repository.
It includes issue metadata, content, labels, user information, timestamps, and comments.

The dataset is suitable for text classification, multi-label classification, and document retrieval tasks.

Dataset Structure

Columns:

  • id — Internal ID of the issue (int64)
  • number — GitHub issue number (int64)
  • title — Title of the issue (string)
  • state — Issue state: open/closed (string)
  • created_at — Timestamp when the issue was created (timestamp[s])
  • updated_at — Timestamp when the issue was last updated (timestamp[s])
  • closed_at — Timestamp when the issue was closed (timestamp[s])
  • html_url — URL to the GitHub issue (string)
  • pull_request — Struct containing PR info (if the issue is a PR):
    • url — URL to PR
    • html_url — HTML URL of PR
    • diff_url — Diff URL
    • patch_url — Patch URL
    • merged_at — Merge timestamp (timestamp[s])
  • user_login — Login of the issue creator (string)
  • is_pull_request — Whether the issue is a pull request (bool)
  • comments — List of comments on the issue (list[string])

Splits:

  • train — 5,000 examples

Dataset Creation

The dataset was collected using the GitHub API, including all issue metadata and comments.

Usage Example

from datasets import load_dataset

dataset = load_dataset("your-username/pandas-github-issues", split="train")

# Preview first 5 examples
for i, example in enumerate(dataset[:5]):
    print(f"Issue #{example['number']}: {example['title']}")
    print(f"Created at: {example['created_at']}, Closed at: {example['closed_at']}")
    print(f"User: {example['user_login']}, PR: {example['is_pull_request']}")
    print(f"Comments: {example['comments'][:3]}")  # first 3 comments
    print()
___
## Citation

If you use this dataset, please cite it as:

```bibtex
@misc{yourusername_pandas_github_issues,
  author       = {Your Name},
  title        = {Pandas GitHub Issues Dataset},
  year         = {2025},
  howpublished = {\url{https://huggingface.co/datasets/your-username/pandas-github-issues}}
}
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