18 Pull requests merged by 11 people

• [backport 2.3.x] BUG(string dtype): groupby/resampler.min/max returns float on all NA strings (#60985)

  #61633 merged Jun 12, 2025

• [2.3.x] CI: temporarily pin numpy to 2.2 until latest numexpr is available

  #61638 merged Jun 12, 2025

• [backport 2.3.x] BUG(string dtype): Empty sum produces incorrect result (#60936)

  #61625 merged Jun 12, 2025

• [backport 2.3.x] API: ignore empty range/object dtype in Index setop operations (string dtype compat) (#60797)

  #60948 merged Jun 12, 2025

• DOC: Title Capitalization and Grammar Fix

  #61630 merged Jun 11, 2025

• ENH: Implement to_iceberg

  #61507 merged Jun 9, 2025

• Update whatsnew for issue #53115

  #61586 merged Jun 9, 2025

• WEB: remove "String data type" from "Roadmap points pending a PDEP" section.

  #61601 merged Jun 8, 2025

• WEB: Restore website width and improve table of contents style

  #61593 merged Jun 8, 2025

• DOC: Validate versions.json before building docs #61573

  #61578 merged Jun 7, 2025

• WEB: Moving maintainers to inactive status

  #61591 merged Jun 6, 2025

• CI: Update Python version to 3.11 in environment.yml

  #61592 merged Jun 6, 2025

• Avoid re-enabling the GIL at runtime

  #61589 merged Jun 6, 2025

• BUILD: Add wheels for musllinux_aarch64

  #61567 merged Jun 6, 2025

• DOC: Fix typo in to_html and to_string docs

  #61555 merged Jun 6, 2025

• BUG: Raise MergeError when suffixes result in duplicate column names …

  #61422 merged Jun 6, 2025

• WEB: Refine PDEP presentation

  #58791 merged Jun 6, 2025

• DOC: Fix typos

  #61580 merged Jun 6, 2025

19 Pull requests opened by 16 people

• BUG: Require sample weights to sum to less than 1 when replace = True

  #61582 opened Jun 6, 2025

• CI: Fix slow mamba solver issue by limiting boto3 versions

  #61594 opened Jun 6, 2025

• Add table of contents support to ecosystem page

  #61595 opened Jun 7, 2025

• ENH: improve optional import error message

  #61597 opened Jun 7, 2025

• PDEP-18: Nullable Object Dtype

  #61599 opened Jun 7, 2025

• DOC/ENH: Holiday exclusion argument

  #61600 opened Jun 7, 2025

• REF: Replace os.path with pathlib.Path in pandas_web.py

  #61604 opened Jun 7, 2025

• DOC: Show constructor arguments for some classes in `pd.series.offsets`

  #61605 opened Jun 8, 2025

• DEP: update python-calamine to 0.3.2

  #61606 opened Jun 8, 2025

• Fix/devcontainer qt deps

  #61611 opened Jun 8, 2025

• BUG: Fix RecursionError when apply native container types as a func

  #61615 opened Jun 9, 2025

• BUG: DataFrame.explode fails with str dtype

  #61623 opened Jun 10, 2025

• BUG: Fix infer_dtype result for float with embedded pd.NA

  #61624 opened Jun 10, 2025

• BUG: to_stata erroring when encoded text and normal text have mismatched length

  #61629 opened Jun 10, 2025

• Description of pandas_datetime_exec function.

  #61635 opened Jun 11, 2025

• Fix void dtype handling

  #61637 opened Jun 12, 2025

• [backport 2.3.x] ENH(string dtype): fallback for HDF5 with UTF-8 surrogates (#60993)

  #61639 opened Jun 12, 2025

• BUG: Fix GroupBy aggregate coersion of outputs inconsistency for pyarrow dtypes

  #61640 opened Jun 12, 2025

• ENH: Allow third-party packages to register IO engines

  #61642 opened Jun 12, 2025

9 Issues closed by 5 people

• BUG: `explode()` converts timestamps at millisecond resolution in DatetimeIndex to nanosecond resolution

  #61610 closed Jun 11, 2025

• BUG: duplicated() raises error with singlton set as subset

  #61554 closed Jun 11, 2025

• RLS: 2.3

  #59664 closed Jun 8, 2025

• VOTE: Voting issue for PDEP-15: Reject adding PyArrow as a required dependency

  #61596 closed Jun 7, 2025

• WEB: Test that our versions JSON is valid

  #61573 closed Jun 7, 2025

• BUG: 2.3.0 didn't publish wheels for musl-aarch64 (arm)

  #61574 closed Jun 6, 2025

• BUG: Duplicate columns allowed on `merge` if originating from separate dataframes

  #61402 closed Jun 6, 2025

• WEB: use sphinx to render the PDEPs

  #51461 closed Jun 6, 2025

• Failed to install pandas==2.3.0 with Python 3.9

  #61563 closed Jun 6, 2025

25 Issues opened by 19 people

• BUG: `to_numeric` fails to convert a Pyarrow Decimal series containing NA values.

  #61641 opened Jun 12, 2025

• BUG: Groupby aggregate coersion of outputs inconsistency for pyarrow dtypes

  #61636 opened Jun 12, 2025

• ENH: ExcelWriter append or create mode

  #61634 opened Jun 11, 2025

• DOC: warn about apply with raw=True, if function returns Optional[int]

  #61632 opened Jun 11, 2025

• DOC:

  #61631 opened Jun 11, 2025

• BUG: PerformanceWarning when agg with pd.NamedAgg and as_index=False

  #61628 opened Jun 10, 2025

• BUG: the behavior of DataFrameGroupBy.apply(..., include_groups=True) breaks post-mortem debugging

  #61627 opened Jun 10, 2025

• DOC: Pandas contributor take limit

  #61626 opened Jun 10, 2025

• BUG: CoW - eq not implemented for <class 'pandas.core.internals.blocks.ExtensionBlock'>

  #61622 opened Jun 10, 2025

• BUG: infer_dtype result for float with embedded pd.NA

  #61621 opened Jun 10, 2025

• API: New global option to set the default dtypes to use

  #61620 opened Jun 10, 2025

• Moving to PyArrow dtypes by default

  #61618 opened Jun 9, 2025

• BUG: numpy_nullable NaNs do not round-trip through CSV

  #61617 opened Jun 9, 2025

• CI: New NumPy release breaking Numba in our CI

  #61616 opened Jun 9, 2025

• QST: Subject: User Experience Issue - NumPy Types in DataFrame Results Breaking Readability

  #61607 opened Jun 8, 2025

• BUG: Writing UUIDs fail

  #61602 opened Jun 7, 2025

• BUG: Dangerous inconsistency: `~` operator changes behavior based on context outside a target.

  #61598 opened Jun 7, 2025

• RLS: 2.3.1

  #61590 opened Jun 6, 2025

• CI: Test pandas with numpy 1.26

  #61588 opened Jun 6, 2025

• WEB: Add table of content for the Ecosystem page

  #61587 opened Jun 6, 2025

• Unpin Python version in the development environment

  #61585 opened Jun 6, 2025

• Proposal to allow third-party engines for readers and writers

  #61584 opened Jun 6, 2025

• BUG: StataWriter returns ascii error when length of string is < 2045, but encoded length is > 2045

  #61583 opened Jun 6, 2025

• BUG: pd.DataFrame.mul has not support fill_value?

  #61581 opened Jun 6, 2025

• `pandas.__version__` is `2.3.0+4.g1dfc98e16a` in pandas 2.3.0 and python 3.9, not `2.3.0`

  #61579 opened Jun 6, 2025

42 Unresolved conversations

Sometimes conversations happen on old items that aren’t yet closed. Here is a list of all the Issues and Pull Requests with unresolved conversations.

• ENH: Implement DataFrame.select

  #61527 commented on Jun 12, 2025 • 7 new comments

• BUG: Fix Series.str.zfill for ArrowDtype string arrays #61485

  #61533 commented on Jun 10, 2025 • 4 new comments

• Use `TypeAlias` in code where types are declared

  #61504 commented on Jun 8, 2025 • 4 new comments

• TST: Remove match= in test_setitem_invalid to avoid PytestWarning

  #61577 commented on Jun 11, 2025 • 3 new comments

• BUG: Copy attrs on pd.merge()

  #60357 commented on Jun 11, 2025 • 3 new comments

• API: Replace na_action parameter in Series/DataFrame/Index.map by the standard skipna

  #61530 commented on Jun 11, 2025 • 2 new comments

• ENH: Support Plugin Accessors Via Entry Points

  #61499 commented on Jun 7, 2025 • 2 new comments

• ENH: Adding DataFrame plotting benchmarks for large datasets

  #61546 commented on Jun 11, 2025 • 1 new comment

• PDEP-15: Reject PDEP-10

  #58623 commented on Jun 11, 2025 • 1 new comment

• Fix #61072: inconsistent fullmatch results with regex alternation

  #61343 commented on Jun 9, 2025 • 1 new comment

• ENH: read_csv tz option

  #61535 commented on Jun 6, 2025 • 0 new comments

• BUG: Add fillna at the beginning of _where not to fill NA. #60729

  #60772 commented on Jun 12, 2025 • 0 new comments

• BUG: Fix return type of loc/iloc

  #61054 commented on Jun 10, 2025 • 0 new comments

• ENH, DOC: Add JupyterLite-powered interactive examples for the `pandas` documentation

  #61061 commented on Jun 6, 2025 • 0 new comments

• [WIP] ENH: support reading directory in read_csv

  #61275 commented on Jun 11, 2025 • 0 new comments

• BLD: allow to build with non-MSVC compilers on Windows

  #61404 commented on Jun 9, 2025 • 0 new comments

• ENH: Implemented MultiIndex.searchsorted method ( GH14833)

  #61435 commented on Jun 9, 2025 • 0 new comments

• BUG: Fixed issue where rolling.kurt() calculations would be effected by values outside of scope

  #61481 commented on Jun 10, 2025 • 0 new comments

• BUG: Raise error when filtering HDF5 with tz-aware index (GH#61479)

  #61482 commented on Jun 6, 2025 • 0 new comments

• Implemented NumbaExecutionEngine

  #61487 commented on Jun 10, 2025 • 0 new comments

• BUG: Fix Index.equals between object and string

  #61541 commented on Jun 12, 2025 • 0 new comments

• DOC: Add note on inference behavior of apply with result_type='expand'

  #61552 commented on Jun 6, 2025 • 0 new comments

• BUG: regex match in compliance tests no longer match pytest expected inputs

  #61557 commented on Jun 6, 2025 • 0 new comments

• BUG: `Index.drop_duplicates()` is inconsistent for unhashable values

  #60925 commented on Jun 6, 2025 • 0 new comments

• "ValueError: Must have equal len keys and value when setting with an iterable" when updating an object type cell using .loc with a nd.array

  #57962 commented on Jun 7, 2025 • 0 new comments

• BUG: PyArrow timestamp type does not work with map() function

  #61231 commented on Jun 7, 2025 • 0 new comments

• BUG: join unexpectedly created extra column start with "key_"

  #61294 commented on Jun 7, 2025 • 0 new comments

• Support for Storing and Retrieving Complex Data Types (e.g., Embeddings) in Pandas DataFrames

  #60895 commented on Jun 8, 2025 • 0 new comments

• ENH: Python 3.13 free-threading support

  #59057 commented on Jun 9, 2025 • 0 new comments

• BUG: comparing strings of different dtypes errors in 2.3

  #61570 commented on Jun 9, 2025 • 0 new comments

• BUG: RecursionError when apply generic alias as a func

  #61565 commented on Jun 9, 2025 • 0 new comments

• BUG: round not functioning as expected

  #55114 commented on Jun 10, 2025 • 0 new comments

• BUG: pandas.pivot_table margins, dropna and observed parameters not producing expected result

  #61469 commented on Jun 10, 2025 • 0 new comments

• DOC: Generating docs doesn't work if path has whitespaces

  #22836 commented on Jun 10, 2025 • 0 new comments

• pd.crosstab, categorical data and missing instances

  #16367 commented on Jun 10, 2025 • 0 new comments

• BUG: mix of int and pd.NA defaults to object dtype

  #33662 commented on Jun 10, 2025 • 0 new comments

• ENH: read_csv with usecols shouldn't change column order

  #61386 commented on Jun 10, 2025 • 0 new comments

• BUG: Boolean Series (actually object) with <NA> values breaks ~ negation and reverts to bit-wise operations

  #60049 commented on Jun 11, 2025 • 0 new comments

• BUG: Series.str.isdigit with pyarrow dtype doesn't honor unicode superscripts

  #61466 commented on Jun 11, 2025 • 0 new comments

• ENH: Enable nsmallest/nlargest on object dtype

  #61166 commented on Jun 12, 2025 • 0 new comments

• PDEP-16: Consistent missing value handling

  #58988 commented on Jun 11, 2025 • 0 new comments

• TST: Added script to enforce usage of match argument for tm.assert_produces_warning

  #59173 commented on Jun 6, 2025 • 0 new comments