1 Release published by 1 person

• v2.3.1 Pandas 2.3.1

  published Jul 7, 2025

78 Pull requests merged by 36 people

• Remove incorrect line in Series init docstring

  #61849 merged Jul 14, 2025

• BUG: Fix pivot_table margins to include NaN groups when dropna=False

  #61524 merged Jul 13, 2025

• DOC: Update README.md to reference issues related to 'good first issue' and 'Docs' properly

  #61836 merged Jul 12, 2025

• DOC: rm excessive backtick

  #61839 merged Jul 12, 2025

• DOC: Correct error message in AbstractMethodError for methodtype argument

  #61827 merged Jul 11, 2025

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

  #61624 merged Jul 11, 2025

• TST: enable 2D tests for MaskedArrays, fix+test shift

  #61826 merged Jul 11, 2025

• TST: Fix test_mask_stringdtype

  #61830 merged Jul 11, 2025

• REF: separate out helpers in libparser

  #61832 merged Jul 11, 2025

• DOC: Update link to pytz documentation

  #61821 merged Jul 11, 2025

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

  #61582 merged Jul 11, 2025

• BUG: Fix Index.equals between object and string

  #61541 merged Jul 10, 2025

• TST[string]: update expecteds for using_string_dtype to fix xfails

  #61727 merged Jul 10, 2025

• CI: Remove PyPy references in CI testing

  #61814 merged Jul 9, 2025

• feature #49580: support new-style float_format string in to_csv

  #61650 merged Jul 8, 2025

• DEPS: Bump NumPy and tzdata

  #61806 merged Jul 8, 2025

• [pre-commit.ci] pre-commit autoupdate

  #61802 merged Jul 7, 2025

• REF: remove unreachable, stronger typing in parsers.pyx

  #61785 merged Jul 7, 2025

• Backport PR #61794 on branch 2.3.x (DOC: prepare 2.3.1 whatsnew notes for release)

  #61803 merged Jul 7, 2025

• BUG: Decimal(NaN) incorrectly allowed in ArrowEA constructor with tim…

  #61773 merged Jul 7, 2025

• TST: option_context bug on Mac GH#58055

  #61779 merged Jul 7, 2025

• PERF: avoid object-dtype path in ArrowEA._explode

  #61786 merged Jul 7, 2025

• DOC: prepare 2.3.1 whatsnew notes for release

  #61794 merged Jul 7, 2025

• CLN: remove and udpate for outdated _item_cache

  #61789 merged Jul 7, 2025

• DOC: Add link to WebGL in pandas ecosystem

  #61790 merged Jul 7, 2025

• [backport 2.3.x] BUG[string]: incorrect index downcast in DataFrame.join (#61771)

  #61800 merged Jul 7, 2025

• [backport 2.3.x] TST: update expected dtype for sum of decimals with pyarrow 21+ (#61799)

  #61801 merged Jul 7, 2025

• TST: update expected dtype for sum of decimals with pyarrow 21+

  #61799 merged Jul 7, 2025

• Backport PR #61795 on branch 2.3.x (DOC: add section about upcoming pandas 3.0 changes (string dtype, CoW) to 2.3 whatsnew notes)

  #61798 merged Jul 7, 2025

• BUG[string]: incorrect index downcast in DataFrame.join

  #61771 merged Jul 7, 2025

• Backport PR #61770 on branch 2.3.x (BUG: Fix unpickling of string dtypes of legacy pandas versions)

  #61793 merged Jul 7, 2025

• DOC: add section about upcoming pandas 3.0 changes (string dtype, CoW) to 2.3 whatsnew notes

  #61795 merged Jul 7, 2025

• Backport PR #61705 on branch 2.3.x (DOC: add pandas 3.0 migration guide for the string dtype)

  #61797 merged Jul 7, 2025

• DOC: add pandas 3.0 migration guide for the string dtype

  #61705 merged Jul 7, 2025

• BUG: Fix unpickling of string dtypes of legacy pandas versions

  #61770 merged Jul 7, 2025

• BUG: NA.__and__, __or__, __xor__ with np.bool_ objects

  #61768 merged Jul 3, 2025

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

  #61767 merged Jul 3, 2025

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

  #61642 merged Jul 3, 2025

• DEPR: object inference in to_stata

  #56536 merged Jul 3, 2025

• [backport 2.3.x] CI: clean up wheel build workarounds now that Cython 3.1.0 is out (#61446)

  #61752 merged Jul 3, 2025

• DEPS: bump pyarrow minimum version from 10.0 to 12.0

  #61723 merged Jul 3, 2025

• Revert "[2.3.x] DEPS: Drop Python 3.9 (#60792)"

  #61755 merged Jul 3, 2025

• BLD: Build wheels for 3.9 and musllinux-aarch64 for pandas 2.3

  #61569 merged Jul 2, 2025

• chore: remove redundant words in comment

  #61759 merged Jul 2, 2025

• TST (string dtype): resolve skip in misc test_memory_usage

  #61757 merged Jul 2, 2025

• [backport 2.3.x] TST/CI: temporary upper pin for scipy in downstream tests for compat with statsmodels (#61750)

  #61754 merged Jul 1, 2025

• DOC: Pass docstring validation for Index.infer_objects

  #61756 merged Jul 1, 2025

• BUG: Assigning boolean series with boolean indexer

  #61743 merged Jul 1, 2025

• TST/CI: temporary upper pin for scipy in downstream tests for compat with statsmodels

  #61750 merged Jul 1, 2025

• TST: fix decimal cast error message for pyarrow nightly tests

  #61749 merged Jul 1, 2025

• [backport 2.3.x] DOC: move relevant whatsnew changes from 2.3.0 to 2.3.1 file (#61698)

  #61751 merged Jul 1, 2025

• Use TypeAlias in code where types are declared

  #61504 merged Jul 1, 2025

• Backport PR #61744 on branch 2.3.x (CI: if no docstring, create error GL08 and don't validate - fix for numpydoc 1.9)

  #61745 merged Jul 1, 2025

• TST: Refactor S3 tests

  #61703 merged Jun 30, 2025

• BUG: Fix return type of loc/iloc

  #61054 merged Jun 30, 2025

• BUG: Copy attrs on pd.merge()

  #60357 merged Jun 30, 2025

• ENH: improve optional import error message

  #61597 merged Jun 30, 2025

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

  #61629 merged Jun 30, 2025

• Description of pandas_datetime_exec function.

  #61635 merged Jun 30, 2025

• DOC: move relevant whatsnew changes from 2.3.0 to 2.3.1 file

  #61698 merged Jun 30, 2025

• DOC: Add missing Index.infer_objects link to API reference

  #61736 merged Jun 30, 2025

• DOC: Fix grammar in AUTHORS.md

  #61739 merged Jun 30, 2025

• CI: if no docstring, create error GL08 and don't validate - fix for numpydoc 1.9

  #61744 merged Jun 30, 2025

• TST: Increase test coverage for pandas.io.formats.excel.py

  #61697 merged Jun 25, 2025

• DOC: update Slack invite link in community dos

  #61704 merged Jun 25, 2025

• [backport 2.3.x] CI: Fix slow mamba solver issue by limiting boto3 version (#61594)

  #61653 merged Jun 24, 2025

• [backport 2.3.x] BUG: DataFrame.explode fails with str dtype (#61623)

  #61699 merged Jun 24, 2025

• BUG: DataFrame.explode fails with str dtype

  #61623 merged Jun 24, 2025

• fix for building docs on Windows

  #61686 merged Jun 22, 2025

• Backport PR #61654 on branch 2.3.x (DOC: Add release notes template for 2.3.1)

  #61680 merged Jun 20, 2025

• DOC: Add release notes template for 2.3.1

  #61654 merged Jun 19, 2025

• DOC/ENH: Holiday days_of_week value error

  #61658 merged Jun 17, 2025

• Fix some incorrect indents in development documentation

  #61664 merged Jun 17, 2025

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

  #61615 merged Jun 16, 2025

• WEB: Reorganization of the Ecosystem page

  #61657 merged Jun 16, 2025

• ENH: Support for Orthodox Easter

  #61666 merged Jun 16, 2025

• fix std/var with complex array

  #61646 merged Jun 16, 2025

• DOC: Make the benchmarks URL clickable

  #61661 merged Jun 16, 2025

35 Pull requests opened by 26 people

• CLN: Use dedup_names for column name mangling in Python parser (#50371)

  #61670 opened Jun 16, 2025

• BUG: fix: `list` as index item does not raise

  #61674 opened Jun 17, 2025

• ENH #61033: Add coalesce_keys option to DataFrame.join for preserving join keys

  #61678 opened Jun 19, 2025

• BUG: Fix lost precision with common type of uint64/int64

  #61679 opened Jun 19, 2025

• BUG/TST: added TypeError if object dtypes are detected in dataframe

  #61682 opened Jun 20, 2025

• Raise MergeError on mismatched signed/unsigned int merge keys

  #61694 opened Jun 23, 2025

• WEB: add note to PDEP-10 about delayed timeline for requiring pyarrow

  #61706 opened Jun 25, 2025

• POC: NA-only behavior for numpy-nullable dtypes

  #61708 opened Jun 25, 2025

• POC: PDEP16 default to masked nullable dtypes

  #61716 opened Jun 26, 2025

• BUG: Raise OutOfBoundsDatetime in DataFrame.replace when value exceeds datetime64[ns] bounds (GH#61671)

  #61717 opened Jun 27, 2025

• CI: add PyPI Trusted-Publishing “publish” job to wheels workflow (#61669)

  #61718 opened Jun 27, 2025

• String dtype: turn on by default

  #61722 opened Jun 27, 2025

• DOC: add sections about big new features (CoW, string dtype) to 3.0.0 whatsnew notes

  #61724 opened Jun 27, 2025

• POC: consistent NaN treatment for pyarrow dtypes

  #61732 opened Jun 28, 2025

• adding pandas.api.typing.aliases and docs

  #61735 opened Jun 29, 2025

• BUG: fillna with DataFrame input should preserve dtype when possible

  #61742 opened Jun 29, 2025

• BUG: Fix assert_frame_equal with check_dtype=False for pd.NA dtype differences (GH#61473)

  #61748 opened Jun 30, 2025

• BUG: .describe() doesn't work for EAs #61707

  #61760 opened Jul 2, 2025

• ENH: speed up wide DataFrame.line plots by using a single LineCollection

  #61764 opened Jul 3, 2025

• BUG: ensure to_numeric down-casts to uint64 for large unsigned integers

  #61766 opened Jul 3, 2025

• Improve MultiIndex label rename checks

  #61769 opened Jul 3, 2025

• TST: assert reading of legacy pickles against current data

  #61792 opened Jul 7, 2025

• Bump pypa/cibuildwheel from 2.23.3 to 3.0.1

  #61796 opened Jul 7, 2025

• DOC: Improve documentation for DataFrame.__setitem__ and .loc assignment from Series

  #61804 opened Jul 7, 2025

• DOC: Improve clarity of GroupBy introduction sentence

  #61805 opened Jul 7, 2025

• DOC: update release process maintainer guide

  #61810 opened Jul 8, 2025

• DOC: Add Raises section to pd.to_numeric docstring

  #61815 opened Jul 8, 2025

• Fix DataFrame.aggregate to preserve extension dtypes with callable functions

  #61816 opened Jul 9, 2025

• DOC: Clarify broadcasting behavior when using lists in DataFrame arithmetic (GH18857)

  #61820 opened Jul 9, 2025

• TST: Adding tests for validating DataFrame.__setitem__ and .loc behavior

  #61822 opened Jul 10, 2025

• BUG: Dataframe arithmatic operators don't work with Series using fill_value

  #61828 opened Jul 10, 2025

• DOC: Clarify str.cat output for Index object (GH35556)

  #61833 opened Jul 11, 2025

• BUG: Fix .rolling().mean() reassignment returning NaNs (pandas-dev#61841)

  #61852 opened Jul 14, 2025

• FIX BUG: If both index and axis are passed to drop(), it will raise ValueError with clear message.

  #61855 opened Jul 14, 2025

• Doc simplify footer

  #61859 opened Jul 15, 2025

53 Issues closed by 13 people

• ENH: Python 3.13 free-threading support

  #59057 closed Jul 14, 2025

• DOC: Series.__init__ doc incorrectly says dtype is ignored if data is a Series

  #61848 closed Jul 14, 2025

• BUG: margin for pivot_table is incorrect with NA column/index values

  #61509 closed Jul 13, 2025

• DOC: README.md link for issues specified for Docs and good first issue doesn't reference properly

  #61835 closed Jul 12, 2025

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

  #61621 closed Jul 11, 2025

• BUG: `mask` in `test_mask_stringdtype` would always return the same result regardless of `cond`

  #61824 closed Jul 11, 2025

• BUG: Intersection of Pandas Index Object is not working properly

  #61831 closed Jul 11, 2025

• BUG: DataFrame.sample weights not required to sum to less than 1

  #61516 closed Jul 11, 2025

• ENH: allow EAs to override MergeOperation._get_join_indexers

  #53696 closed Jul 11, 2025

• API/PERF: when to check for mismatched tzs/awareness in array_to_datetime

  #55779 closed Jul 11, 2025

• BUG: Can only compare identically-labeled Series objects (string vs. object)

  #61099 closed Jul 10, 2025

• To develop a machine learning model that accurately predicts house prices based on various features such as location, size, number of bedrooms, and other relevant factors.

  #61817 closed Jul 9, 2025

• BUG: read_excel() converts the string "None" in an Excel file to "NaN"

  #61788 closed Jul 8, 2025

• ENH: support new-style float_format string in to_csv

  #49580 closed Jul 8, 2025

• CI: Test pandas with numpy 1.26

  #61588 closed Jul 8, 2025

• PERF: Unnecessary string interning in read_csv?

  #61783 closed Jul 8, 2025

• DOC: https://pandas.pydata.org/pandas-docs/version/2.3 does not work

  #61721 closed Jul 8, 2025

• ENH: Add Coefficient of Variation to DataFrame.describe()

  #61784 closed Jul 7, 2025

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

  #61579 closed Jul 7, 2025

• API/BUG: different constructor behavior for numpy vs pyarrow dt64tzs

  #61775 closed Jul 7, 2025

• BUG: TestTableSchemaRepr::test_publishes raises AttributeError on mac

  #58055 closed Jul 7, 2025

• CLN: references/tests for item_cache

  #61746 closed Jul 7, 2025

• DOC: Improve text color in dark mode for tutorial navigation buttons

  #61791 closed Jul 7, 2025

• String dtype: overview of breaking behaviour changes

  #59328 closed Jul 7, 2025

• BUG: StringDtype objects from pandas <2.3.0 cannot be reliably unpickled in 2.3.0.

  #61763 closed Jul 7, 2025

• BUG: Series.mul silently returns wrong values with `UInt8` dtype when overflowing the max value range

  #59261 closed Jul 4, 2025

• BUG: np.bool_(False) & pd.NA gives pd.NA

  #58427 closed Jul 3, 2025

• BUG: Segmentation fault when misusing `VariableWindowIndexer.get_window_bounds`

  #61753 closed Jul 2, 2025

• BUG: comparing strings of different dtypes errors in 2.3

  #61570 closed Jul 2, 2025

• BUG: Incompatible dype warning when assigning boolean series with logical indexer

  #57338 closed Jul 1, 2025

• BUG: loc[] returns object type instead of float

  #60600 closed Jun 30, 2025

• ENH: Copy attrs on join (possibly depending on left, right, etc.)

  #60351 closed Jun 30, 2025

• Misleading error message when PyTables is not installed

  #61521 closed Jun 30, 2025

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

  #61583 closed Jun 30, 2025

• DOC: Description of pandas_datetime_exec function

  #61631 closed Jun 30, 2025

• BUG: AttributeError in pandas.core.algorithms.diff when passing non-numeric types

  #61728 closed Jun 30, 2025

• DOC: Index.infer_objects is missing from docs

  #61733 closed Jun 30, 2025

• DISC: nanoarrow-backed ArrowStringArray

  #58552 closed Jun 29, 2025

• ENH: Type support for variables in `DataFrame.query()`

  #61731 closed Jun 29, 2025

• BUG: CI docstring-validation fails with AttributeError in numpydoc validate.py

  #61720 closed Jun 27, 2025

• BUG/API: floordiv by zero in Int64Dtype

  #61715 closed Jun 27, 2025

• DOC: The Slack invite link to join the Pandas Dev community is broken

  #61690 closed Jun 25, 2025

• DISC: path to nullable-by-default integers and floats

  #58243 closed Jun 23, 2025

• BUG: Docs won't build (Unexpected exception in `doc\source\user_guide\enhancingperf.rst`)

  #60149 closed Jun 22, 2025

• DOC: Pandas contributor take limit

  #61626 closed Jun 22, 2025

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

  #61469 closed Jun 21, 2025

• BUG: engine calamine lost 0 when read_excel from vlookup cell

  #61186 closed Jun 19, 2025

• BUG: cannot use registered float16 extension dtype

  #46111 closed Jun 18, 2025

• BUG: RecursionError when apply generic alias as a func

  #61565 closed Jun 16, 2025

• ENH: Support for Orthodox Easter

  #61665 closed Jun 16, 2025

• BUG: Incorrect guess_datetime_format response

  #61663 closed Jun 16, 2025

• BUG: `Series.std` and `Series.var` give incorrect results for complex values.

  #61645 closed Jun 16, 2025

• WEB: Add table of content for the Ecosystem page

  #61587 closed Jun 16, 2025

47 Issues opened by 40 people

• ENH: New method "ends" as a combination of “head” and "tail"

  #61860 opened Jul 15, 2025

• BUG: Inconsistent .values NA/NaN

  #61856 opened Jul 14, 2025

• ENH: Backport free-threading support to 2.3

  #61844 opened Jul 13, 2025

• BUG: .rolling().mean() returns all NaNs on re-execution, despite .copy() use

  #61841 opened Jul 12, 2025

• ENH: Include line number and number of fields when read_csv() callable raises ParserWarning

  #61838 opened Jul 12, 2025

• BUG: read_csv() on_bad_lines callable does not raise ParserWarning when index_col is set

  #61837 opened Jul 12, 2025

• ENH: error message context.

  #61834 opened Jul 12, 2025

• ENH: Add a function like PYQT signal

  #61829 opened Jul 11, 2025

• PERF: Brainstorming read_csv perf improvements

  #61825 opened Jul 10, 2025

• BUG: drop doesn't recognise MultiIndexes

  #61823 opened Jul 10, 2025

• BUG: Series created from pre-2.1 legacy pickles lose their names during .copy operations

  #61819 opened Jul 9, 2025

• ENH: Add Polars engine to read_csv

  #61813 opened Jul 8, 2025

• BUG: Dataframe.aggregate drops pyarrow backend for lambda aggregation functions

  #61812 opened Jul 8, 2025

• DOC: Lacking information on error type raised by pd.to_numeric

  #61811 opened Jul 8, 2025

• BUG: Pandas Series with Xarray slow print time.

  #61809 opened Jul 8, 2025

• BUG: union of MultiIndex throws exception for datetime and pd.Timestamp with identical values

  #61807 opened Jul 7, 2025

• BUG: Errors using pyarrow datetime types on windows

  #61782 opened Jul 5, 2025

• DOC: Typo within `Series.mask()` docs - alignment is done between self and cond, not cond and other

  #61781 opened Jul 4, 2025

• BUG: tz_localize(None) with Arrow timestamp

  #61780 opened Jul 4, 2025

• BUG?: creating Categorical from pandas Index/Series with "object" dtype infers string

  #61778 opened Jul 4, 2025

• BUG: Calling dict(df.groupby(...)) raises TypeError: 'str' object is not callable despite valid inputs

  #61772 opened Jul 3, 2025

• BUG: user expected pd.isna to be False for NaNs with Float64Dtype

  #61758 opened Jul 2, 2025

• PERF: Arrow dtypes are much slower than Numpy for DataFrame.apply

  #61747 opened Jun 30, 2025

• CI Failures due to new scipy and new numpydoc

  #61740 opened Jun 29, 2025

• Removal of members from pandas-triage team

  #61734 opened Jun 29, 2025

• BUG: `read_csv()` : inconsistent dtype and content parsing.

  #61730 opened Jun 28, 2025

• BUG: mapping categorical with single category to boolean returns category instead of bool dtype

  #61719 opened Jun 27, 2025

• BUG: doing df.to_parquet and then reading it with pd.read_parquet causes KeyError

  #61714 opened Jun 26, 2025

• BUG: Inconsitent behaviour for different backends due to nullable bool values

  #61713 opened Jun 26, 2025

• BUG: .round causes TypeError / NaN-

  #61712 opened Jun 26, 2025

• Writing data to mysql database using df.to_sql method gives exception

  #61711 opened Jun 26, 2025

• BUG: Index[Float64].insert(1, False) casts False to 0

  #61709 opened Jun 26, 2025

• BUG: .describe() doesn't work for EAs

  #61707 opened Jun 25, 2025

• ENH: When read_csv reports an error, include the column name and row number

  #61700 opened Jun 24, 2025

• ENH: Add prefix, suffix and sep arguments to shift method

  #61696 opened Jun 23, 2025

• ENH: Add `excel_sep_hint` parameter to `to_csv` for Excel compatibility

  #61692 opened Jun 23, 2025

• Proposal: Add pd.check(df) utility function for quick dataset diagnostics

  #61691 opened Jun 23, 2025

• BUG: Merge duplicates and validation failure when columns have type int64 and uint64

  #61688 opened Jun 22, 2025

• BUG: DataFrame.mul() corrupts data by setting values to zero

  #61687 opened Jun 22, 2025

• ENH: the error behaviour in pandas operation should be consistent rename erros are ignore by default whereas drop erros are raise

  #61681 opened Jun 20, 2025

• Incorrect rolling std() results on very large DataFrames

  #61677 opened Jun 18, 2025

• BUG: Implicit conversion to float64 with isin()

  #61676 opened Jun 18, 2025

• BUG: DataFrame.join(other) raises InvalidIndexError if column index is CategoricalIndex

  #61675 opened Jun 18, 2025

• BUG: np.nan to datetime assertionerror when too large datetime given

  #61671 opened Jun 16, 2025

• ENH: Switch to trusted publishing for package upload to PyPI in CI

  #61669 opened Jun 16, 2025

• BUG: pd.read_sql is incorrectly reading long int when connecting to Teradata

  #61667 opened Jun 16, 2025

• DOC: Improve documentation for DataFrame.__setitem__ and .loc assignment from Series

  #61662 opened Jun 15, 2025

132 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.

• Implemented NumbaExecutionEngine

  #61487 commented on Jul 11, 2025 • 31 new comments

• ExtensionArray.Round method and tests

  #54582 commented on Jul 8, 2025 • 6 new comments

• Fix/devcontainer qt deps

  #61611 commented on Jul 2, 2025 • 4 new comments

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

  #60772 commented on Jul 8, 2025 • 4 new comments

• BUG: Add PyArrow datelike type support for `map()`

  #61644 commented on Jul 14, 2025 • 3 new comments

• ENH: Adding DataFrame plotting benchmarks for large datasets

  #61546 commented on Jun 19, 2025 • 3 new comments

• BUG: groupby.agg with UDF changing pyarrow dtypes

  #59601 commented on Jul 8, 2025 • 2 new comments

• TST(string dtype): Resolve xfails in test_from_dummies

  #60694 commented on Jul 14, 2025 • 2 new comments

• [WIP] ENH: support reading directory in read_csv

  #61275 commented on Jul 14, 2025 • 2 new comments

• Fix #60766:.map,.apply would convert element type for extension array

  #61396 commented on Jul 8, 2025 • 2 new comments

• ENH: Implement PDEP-17

  #61468 commented on Jul 13, 2025 • 2 new comments

• PERF: improve StringArray.isna

  #57733 commented on Jul 8, 2025 • 1 new comment

• Add `strict_na` keyword to the assert_.._equal methods for object dtype to help with deprecation

  #58072 commented on Jul 8, 2025 • 1 new comment

• PDEP-16: Consistent missing value handling

  #58988 commented on Jul 8, 2025 • 1 new comment

• ENH: Support Plugin Accessors Via Entry Points

  #61499 commented on Jun 27, 2025 • 1 new comment

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

  #61659 commented on Jul 2, 2025 • 1 new comment

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

  #61530 commented on Jun 24, 2025 • 1 new comment

• Fix void dtype handling

  #61637 commented on Jul 15, 2025 • 1 new comment

• DOC: Simplify pandas theme footer

  #51536 commented on Jul 15, 2025 • 0 new comments

• ENH: Support attrs in feather files

  #60675 commented on Jul 14, 2025 • 0 new comments

• "drop" fails by default when label to drop is not in the index, but "rename" silently passes by. Wouldn't it make sense to synchronize?

  #40427 commented on Jul 14, 2025 • 0 new comments

• Updating value of a single row of a column using loc or at fails

  #22040 commented on Jul 13, 2025 • 0 new comments

• BUG: CustomBusinessDay not respecting calendar

  #60647 commented on Jul 13, 2025 • 0 new comments

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

  #61581 commented on Jul 13, 2025 • 0 new comments

• DOC: v2.2 offline documentation search button not work

  #60308 commented on Jul 11, 2025 • 0 new comments

• With an external grouper, there is no way to access the grouped value in a DataFrame(...).groupby(...).apply(...) workflow

  #9545 commented on Jul 11, 2025 • 0 new comments

• BUG: read_sql no longer works simply with SqlAlchemy selectables and a quick fix

  #35484 commented on Jul 11, 2025 • 0 new comments

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

  #61617 commented on Jul 10, 2025 • 0 new comments

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

  #61641 commented on Jul 10, 2025 • 0 new comments

• BUG: assert_frame_equal(check_dtype=False) fails when comparing two DFs containing pd.NA that only differ in dtype (object vs Int32)

  #61473 commented on Jul 10, 2025 • 0 new comments

• DOC: improve docs for broadcasting behavior

  #18857 commented on Jul 9, 2025 • 0 new comments

• DOC: min_itemsize for HDFStore append for encoded strings

  #14601 commented on Jul 9, 2025 • 0 new comments

• BUG: If you add _metadata to a custom subclass of Series, the sequence name is lost when indexing

  #61491 commented on Jul 8, 2025 • 0 new comments

• REF: dtype_backend argument in sql module mixes lib.no_default and numpy

  #60326 commented on Jul 8, 2025 • 0 new comments

• WEB: Multiple "Getting Started" on pandas.io leads to different links

  #32307 commented on Jul 8, 2025 • 0 new comments

• BUG: ``'ArrowExtensionArray' object has no attribute 'max'`` when passing pyarrow-backed series to `.iloc`

  #61311 commented on Jul 8, 2025 • 0 new comments

• RLS: 2.3.1

  #61590 commented on Jul 8, 2025 • 0 new comments

• TST: Disallow bare tm.assert_produces_warning

  #58290 commented on Jul 8, 2025 • 0 new comments

• BUG (string dtype): logical operation with bool and string failing

  #60234 commented on Jul 8, 2025 • 0 new comments

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

  #61466 commented on Jul 8, 2025 • 0 new comments

• TRACKER: new default String dtype (pyarrow-backed, numpy NaN semantics)

  #54792 commented on Jul 7, 2025 • 0 new comments

• BUG: Large XML files on Windows trigger false Encoding error

  #59447 commented on Jul 6, 2025 • 0 new comments

• BUG: Fix assert_frame_equal dtype handling when check_dtype=False (#61473)

  #61525 commented on Jul 4, 2025 • 0 new comments

• ENH: Add `force_suffixes` boolean argument to `pd.merge`

  #61498 commented on Jul 2, 2025 • 0 new comments

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

  #61533 commented on Jun 16, 2025 • 0 new comments

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

  #61481 commented on Jun 25, 2025 • 0 new comments

• DOC: Fix docs for BusinessDay constructor #52431

  #61543 commented on Jun 25, 2025 • 0 new comments

• BUG: Raise ValueError on integer indexers containing NA; skip test for unsupported EAs(#56727)

  #61465 commented on Jun 25, 2025 • 0 new comments

• ENH: Added `DataFrame.nsorted` to select top ``n`` rows according to column-dependent order

  #61457 commented on Jun 19, 2025 • 0 new comments

• BUG: Raise TypeError when joining with non-DataFrame using 'on=' (GH#61434)

  #61454 commented on Jun 25, 2025 • 0 new comments

• ENH: Implemented MultiIndex.searchsorted method ( GH14833)

  #61435 commented on Jun 19, 2025 • 0 new comments

• DOC: Remove and Update out of date Docker Image issue with #61511

  #61550 commented on Jul 5, 2025 • 0 new comments

• Fix alignment in Series subtraction with MultiIndex, Index and NaN values (#60908)

  #61381 commented on Jun 25, 2025 • 0 new comments

• ENH: Implement translations infrastructure

  #61380 commented on Jul 2, 2025 • 0 new comments

• Parallelize test_sql.py - Issue #60378

  #61551 commented on Jul 10, 2025 • 0 new comments

• BUG: Fix scatter plot colors in groupby context to match line plot behavior (#59846)

  #61233 commented on Jun 19, 2025 • 0 new comments

• BUG: Fix #61221: Exception with unstack(sort=False) and NA in index.

  #61226 commented on Jun 16, 2025 • 0 new comments

• BUG: fix to_json on period

  #61203 commented on Jun 17, 2025 • 0 new comments

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

  #61061 commented on Jul 7, 2025 • 0 new comments

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

  #61552 commented on Jul 7, 2025 • 0 new comments

• PDEP-18: Nullable Object Dtype

  #61599 commented on Jun 27, 2025 • 0 new comments

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

  #61605 commented on Jul 4, 2025 • 0 new comments

• API/CoW: take view of underlying Block values for shallow (deep=False) copies

  #58966 commented on Jul 8, 2025 • 0 new comments

• PDEP-15: Reject PDEP-10

  #58623 commented on Jul 1, 2025 • 0 new comments

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

  #61640 commented on Jul 2, 2025 • 0 new comments

• feature #58141: Consistent naming conventions for string dtype aliases

  #61651 commented on Jun 26, 2025 • 0 new comments

• Use BaseExecutionEngine for Python and Numba engines

  #61458 commented on Jun 15, 2025 • 0 new comments

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

  #61622 commented on Jun 23, 2025 • 0 new comments

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

  #61386 commented on Jun 24, 2025 • 0 new comments

• ENH: allow pd.merge() variables right_on and left_on to accept pd.Index() array_likes

  #58279 commented on Jun 25, 2025 • 0 new comments

• ENH: Add `coalesce_keys` option to join

  #61033 commented on Jun 25, 2025 • 0 new comments

• ENH: add `__rshift__`, `__lshift__`, `__irshift__` and `__ilshift__`

  #60693 commented on Jun 25, 2025 • 0 new comments

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

  #61627 commented on Jun 25, 2025 • 0 new comments

• ENH: ExcelWriter append or create mode

  #61634 commented on Jun 26, 2025 • 0 new comments

• BUG: read_csv not guessing delimiter

  #47024 commented on Jun 27, 2025 • 0 new comments

• FEEDBACK: PyArrow as a required dependency and PyArrow backed strings

  #54466 commented on Jun 27, 2025 • 0 new comments

• ENH: Implement `skiptrailingspace` parameter for `read_csv`

  #60813 commented on Jun 28, 2025 • 0 new comments

• BUG: pandas read_xml with iterparse and stylesheets silently ignores stylesheets

  #58857 commented on Jun 29, 2025 • 0 new comments

• ENH: read_xml handling of bad lines

  #59384 commented on Jun 29, 2025 • 0 new comments

• BUG: replace value failed

  #61643 commented on Jun 29, 2025 • 0 new comments

• BUG: pre-commit version 4.0.0 is required

  #61328 commented on Jun 29, 2025 • 0 new comments

• ENH: The row and column indexing mechanism of your dataframe is inefficient, leading to errors and unnecessary time consumption

  #61230 commented on Jun 29, 2025 • 0 new comments

• ENH: Utility to return "feasible" dtype for `infer_dtype` output.

  #61256 commented on Jun 29, 2025 • 0 new comments

• CLN: Use dedup_names in all instances where duplicate column names are renamed

  #50371 commented on Jun 16, 2025 • 0 new comments

• BUG: round not functioning as expected

  #55114 commented on Jun 17, 2025 • 0 new comments

• BUG: `pandas.Styler.__repr__` and `pandas.Styler.__str__` cause `nbconvert` failure to display data

  #55908 commented on Jun 17, 2025 • 0 new comments

• BUG: Type error supplying SQLAlchemy NVARCHAR length in to_sql()

  #61660 commented on Jun 18, 2025 • 0 new comments

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

  #61636 commented on Jun 20, 2025 • 0 new comments

• BUG: concatenating time series with non ns unit leads to dataframe with missing data

  #58471 commented on Jun 21, 2025 • 0 new comments

• DOC: Fix docs for various offset constructors

  #52431 commented on Jun 22, 2025 • 0 new comments

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

  #60925 commented on Jun 22, 2025 • 0 new comments

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

  #61632 commented on Jun 23, 2025 • 0 new comments

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

  #61628 commented on Jun 23, 2025 • 0 new comments

• BUG: Writing UUIDs fail

  #61602 commented on Jun 23, 2025 • 0 new comments

• BUILD: Installation issue on Mac with M1 Pro arm64 processor. pandas_parser.cpython-311-darwin.so is using x86_64 arch

  #61566 commented on Jun 23, 2025 • 0 new comments

• ENH: Columns formatted as "Text" in Excel are read as numbers

  #61539 commented on Jun 23, 2025 • 0 new comments

• BUG: use of iloc with heterogeneous DataFrame sometimes performs undocumented conversions

  #61537 commented on Jun 23, 2025 • 0 new comments

• raise TypeError when function returns object-like results

  #61529 commented on Jun 23, 2025 • 0 new comments

• API: timestamp resolution inference - default to one unit (if possible) instead of being data-dependent?

  #58989 commented on Jun 23, 2025 • 0 new comments

• ENH: The method of obtaining a certain cell or slice of the dataframe is confusing and unclear

  #61232 commented on Jun 29, 2025 • 0 new comments

• ENH: read_csv tz option

  #61535 commented on Jul 1, 2025 • 0 new comments

• ENH: add option to save json without escaping forward slashes

  #61442 commented on Jul 1, 2025 • 0 new comments

• ENH: generic `save` and `read` methods for DataFrame

  #60786 commented on Jul 1, 2025 • 0 new comments

• Moving to PyArrow dtypes by default

  #61618 commented on Jul 1, 2025 • 0 new comments

• BUG: DataFrameGroupBy.__getitem__ fails with tuples on multi-level column objects

  #58282 commented on Jul 2, 2025 • 0 new comments

• BUG: incompatible dtype when creating bool column with df.at

  #56600 commented on Jul 2, 2025 • 0 new comments

• ENH: Replacing behavior currently provided by pandas.to_numeric using errors="ignore"

  #59221 commented on Jul 2, 2025 • 0 new comments

• ENH: Restore the functionality of `.fillna`

  #59831 commented on Jul 2, 2025 • 0 new comments

• BUG: Incorrect logical operation between pandas dataframe and series

  #60204 commented on Jul 2, 2025 • 0 new comments

• BUG/API: preserve dtype in Index `append()`

  #60159 commented on Jul 2, 2025 • 0 new comments

• DEPR: List of deprecations to be removed in 4.0

  #56596 commented on Jul 3, 2025 • 0 new comments

• BUG: "Python int too large" in maybe_convert_objects with numpy 1.26

  #60023 commented on Jul 3, 2025 • 0 new comments

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

  #61596 commented on Jul 3, 2025 • 0 new comments

• Request for guidance on issues for upcoming PyData Yerevan pandas sprint

  #61347 commented on Jul 4, 2025 • 0 new comments

• BUG: pyarrow stripping leading zeros with dtype=str

  #57666 commented on Jul 4, 2025 • 0 new comments

• ENH: read_xml() does not allow to specify huge_tree=True for the 'lxml' parser.

  #61290 commented on Jul 6, 2025 • 0 new comments

• ENH: Automate reading of data in chunks

  #61110 commented on Jun 29, 2025 • 0 new comments

• ENH: Add an iterdicts() function

  #60901 commented on Jun 29, 2025 • 0 new comments

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

  #60895 commented on Jun 29, 2025 • 0 new comments

• BUG: why arrow only work on mac arm？

  #60714 commented on Jun 29, 2025 • 0 new comments

• BUG: Segfault on `np.maximum(series, ...)`

  #60611 commented on Jun 29, 2025 • 0 new comments

• BUG: arithmetic between datetime.timedelta scalar and series produces timedelta64[us] instead of timedelta64[ns]

  #59656 commented on Jun 29, 2025 • 0 new comments

• QST: Should the absence of tzdata package affect the performance in any way ?

  #61218 commented on Jun 29, 2025 • 0 new comments

• ENH: read_parquet as a class method

  #58303 commented on Jun 29, 2025 • 0 new comments

• QST: Why is subtracting pandas.timedelta from pandas.date not vectorized?

  #58315 commented on Jun 29, 2025 • 0 new comments

• ENH: Make ExtensionArray a Protocol

  #57633 commented on Jun 29, 2025 • 0 new comments

• BUG: dtype keyword in Series constructor ignored for Series input in certain cases

  #59060 commented on Jun 29, 2025 • 0 new comments

• BUG: Inconsistent behavior surrounding pd.fillna

  #61568 commented on Jun 30, 2025 • 0 new comments

• ENH: Adding pd.from_pydantic

  #61513 commented on Jun 30, 2025 • 0 new comments

• ENH: Decimal year

  #60391 commented on Jul 1, 2025 • 0 new comments

• BUG: Converting string of type lxml.etree._ElementUnicodeResult to a datetime using pandas.to_datetime results in a TypeError.

  #60933 commented on Jul 1, 2025 • 0 new comments

• BUG: set_index with pyarrow timestamp type does not produce DatetimeIndex

  #60561 commented on Jul 1, 2025 • 0 new comments