1 Release published by 1 person

• v2.3.2 Pandas 2.3.2

  published Aug 21, 2025

87 Pull requests merged by 32 people

• ENH: Introduce pandas.col

  #62103 merged Aug 22, 2025

• REF: get rid of ArrowStringArrayNumpySemantics

  #62165 merged Aug 22, 2025

• REF: remove unnecessary case from maybe_downcast_to_dtype

  #62166 merged Aug 22, 2025

• ENH: Rename DataFrame._append to _append_internal

  #62137 merged Aug 21, 2025

• REF: remove unnecessary string mixins

  #62155 merged Aug 21, 2025

• REF: avoid inferred_type checks in plotting

  #62160 merged Aug 21, 2025

• Backport PR #62152 on branch 2.3.x (DOC: prepare 2.3.2 whatsnew notes for release)

  #62163 merged Aug 21, 2025

• DOC: prepare 2.3.2 whatsnew notes for release

  #62152 merged Aug 21, 2025

• [backport 2.3.x] DOC: move and reword whatsnew note for replace fix (GH-57865) (#62153)

  #62156 merged Aug 21, 2025

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

  #61605 merged Aug 20, 2025

• DOC: move and reword whatsnew note for replace fix (GH-57865)

  #62153 merged Aug 20, 2025

• ENH: EA._cast_pointwise_result

  #62105 merged Aug 20, 2025

• Backport PR #62147 on branch 2.3.x (DOC: correct and rewrite string migration section on astype(str))

  #62151 merged Aug 20, 2025

• DOC: correct and rewrite string migration section on astype(str)

  #62147 merged Aug 20, 2025

• [backport 2.3.x] BUG/DEPR: logical operation with bool and string (#61995)

  #62114 merged Aug 19, 2025

• DOC: Updated shift docstring to mark Series behavior

  #62133 merged Aug 18, 2025

• DOC: Improve consistency in terminology and fix minor typos in documentation

  #62091 merged Aug 18, 2025

• Backport PR #62124 on branch 2.3.x (CI/BLD: don't use strict xfail for '%m.%Y' format in test_hypothesis_delimited_date)

  #62128 merged Aug 15, 2025

• WEB: fix discussion link in PDEP-6

  #62120 merged Aug 15, 2025

• DOC: Improve kwargs docs for parquet engines

  #62125 merged Aug 15, 2025

• Fix typo in the test name

  #62122 merged Aug 15, 2025

• CI/BLD: don't use strict xfail for '%m.%Y' format in test_hypothesis_delimited_date

  #62124 merged Aug 15, 2025

• CI/BLD: fix upload of arm64 windows wheels

  #62126 merged Aug 15, 2025

• Use jinja2 FileSystemLoader instead of PackageLoader for compat newer meson-python and editable installs

  #62123 merged Aug 15, 2025

• [backport 2.3.x] BUG(CoW): also raise for chained assignment for .at / .iat (#62074)

  #62115 merged Aug 15, 2025

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

  #61724 merged Aug 15, 2025

• [backport 2.3.x] BUG: Fix Series.str.contains with compiled regex on Arrow string dtype (#61946)

  #62116 merged Aug 15, 2025

• [backport 2.3.x] BUG: fix Series.str.fullmatch() and Series.str.match() with a compiled regex failing with arrow strings (#61964)

  #62113 merged Aug 15, 2025

• BUG: Fix ExtensionArray binary op protocol

  #61990 merged Aug 14, 2025

• BUG: Fix Series.str.contains with compiled regex on Arrow string dtype

  #61946 merged Aug 14, 2025

• BUG: fix Series.str.fullmatch() and Series.str.match() with a compiled regex failing with arrow strings

  #61964 merged Aug 14, 2025

• DOC: Add to_julian_date to DatetimeIndex methods listing

  #62090 merged Aug 13, 2025

• ENH: Warn on unused arguments to resample

  #62101 merged Aug 13, 2025

• ENH: Implement PDEP-17

  #61468 merged Aug 12, 2025

• BUG: read_csv with engine=pyarrow and numpy-nullable dtype

  #62053 merged Aug 12, 2025

• DEPS: Bump adbc-driver-postgresql/sqlite to 1.2

  #62065 merged Aug 11, 2025

• DEPS: update python version in dockerfile

  #62088 merged Aug 11, 2025

• BUG: Preserve column names in DataFrame.from_records when nrows=0

  #62085 merged Aug 11, 2025

• REF: split big method in pyarrow csv wrapper

  #62087 merged Aug 11, 2025

• API: offsets.Day is always calendar-day

  #61985 merged Aug 11, 2025

• BUG: Fix tz_localize(None) with Arrow timestamp

  #62076 merged Aug 11, 2025

• DEPS: Drop Python 3.10

  #62066 merged Aug 8, 2025

• MNT: migrate from codecs.open to open

  #62073 merged Aug 8, 2025

• BUG(CoW): also raise for chained assignment for .at / .iat

  #62074 merged Aug 8, 2025

• BUG: Fix Series.reindex losing values when reindexing to MultiIndex

  #61969 merged Aug 7, 2025

• API: make construct_array_type non-classmethod

  #62060 merged Aug 6, 2025

• DOC: Inform users that incomplete reports will generally be closed

  #62054 merged Aug 6, 2025

• BUG: groupby.idxmin/idxmax with all NA values should raise

  #62026 merged Aug 5, 2025

• BUG: fix indexing with ArrowExtensionArray in .iloc

  #61924 merged Aug 5, 2025

• REF: simplify mask_missing

  #62049 merged Aug 5, 2025

• DOC: Add SSLCertVerificationError warning message for documentation b…

  #62015 merged Aug 5, 2025

• REF: Avoid/defer dtype=object containers in plotting

  #62042 merged Aug 5, 2025

• API: improve dtype in df.where with EA other

  #62038 merged Aug 5, 2025

• REF: make copy keyword in recode_for_categories keyword only

  #62019 merged Aug 4, 2025

• API: rank with nullable dtypes preserve NA

  #62043 merged Aug 4, 2025

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

  #62041 merged Aug 4, 2025

• TST: nan->NA in non-construction tests

  #62021 merged Aug 4, 2025

• EHN: return early when the result is None

  #62032 merged Aug 4, 2025

• Bump pypa/cibuildwheel from 3.1.1 to 3.1.3

  #62039 merged Aug 4, 2025

• TST: Speed up hypothesis and slow tests

  #62028 merged Aug 3, 2025

• BUG: Change default of observed in Series.groupby

  #62025 merged Aug 2, 2025

• BUG: Avoid copying categorical codes if copy=False

  #62000 merged Aug 1, 2025

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

  #61804 merged Aug 1, 2025

• DOC: rephrase CoW ChainedAssignmentError message now CoW is always enabled

  #61970 merged Jul 30, 2025

• TST: Raise on pytest.PytestWarning

  #61996 merged Jul 30, 2025

• BUG/DEPR: logical operation with bool and string

  #61995 merged Jul 29, 2025

• BUG: groupby.agg with UDF changing pyarrow dtypes

  #59601 merged Jul 29, 2025

• MNT: simplify cibuildwheel configuration

  #61984 merged Jul 28, 2025

• Bump pypa/cibuildwheel from 2.23.3 to 3.1.1

  #61981 merged Jul 28, 2025

• TST: add test for dtype argument in str.decode

  #61872 merged Jul 28, 2025

• DOC: update .str.contains/match/startswith docstring examples for default behaviour

  #61960 merged Jul 28, 2025

• BUG: Series.replace with CoW when made from an Index

  #61972 merged Jul 28, 2025

• BUG: Fix infer_dtype result for complex with pd.NA

  #61977 merged Jul 28, 2025

• DOC: Update documentation for using natural sort with sort_values

  #61979 merged Jul 28, 2025

• [backport 2.3.x] Output formatting: preserve quoting for string categories (#61891)

  #61966 merged Jul 26, 2025

• [backport 2.3.x] BUG: fix to_json() with JSON Table Schema work correctly with string dtype (#61900)

  #61965 merged Jul 26, 2025

• CI: enable doctest errors again + fixup categorical examples

  #61947 merged Jul 26, 2025

• Backport PR #61921 on branch 2.3.x (DOC: explicitly mention new str dtype is no longer a numpy dtype in migration guide)

  #61961 merged Jul 26, 2025

• BUG: fix to_json() with JSON Table Schema work correctly with string dtype

  #61900 merged Jul 26, 2025

• Backport PR #61958 on branch 2.3.x (DOC: Add release notes template for 2.3.2)

  #61959 merged Jul 26, 2025

• DOC: explicitly mention new str dtype is no longer a numpy dtype in migration guide

  #61921 merged Jul 26, 2025

• DOC: Add release notes template for 2.3.2

  #61958 merged Jul 26, 2025

• DOC: Add tzdata to README dependencies list

  #61931 merged Jul 25, 2025

• DOC: fix doctests for pandas/core/strings/accessor.py for new string dtype

  #61908 merged Jul 25, 2025

• Output formatting: preserve quoting for string categories

  #61891 merged Jul 25, 2025

• Backport PR #61933 on branch 2.3.x (unpin scipy since statsmodels was fixed)

  #61934 merged Jul 24, 2025

• unpin scipy since statsmodels was fixed

  #61933 merged Jul 24, 2025

56 Pull requests opened by 43 people

• BUG: Fix TypeError in assert_index_equal when comparing CategoricalIndex with check_categorical=True and exact=False

  #61941 opened Jul 24, 2025

• DOC: added button to edit on GitHub

  #61956 opened Jul 26, 2025

• BUG: fix .str.isdigit to honor unicode superscript for older pyarrow

  #61962 opened Jul 26, 2025

• [backport 2.3.x] BUG: fix fill value for gouped sum in case of unobserved categories for string dtype (empty string instead of 0) (#61909)

  #61963 opened Jul 26, 2025

• ENH: usecols takes input order for read_csv implementation review

  #61967 opened Jul 26, 2025

• Fix warning for extra fields in read_csv with on_bad_lines callable

  #61987 opened Jul 29, 2025

• DOC: documenting pandas.MultIndex.argsort

  #62005 opened Jul 30, 2025

• DOC: Standardize noncompliant docstrings in pandas/io/html.py (flake8-docstrings) #61944

  #62007 opened Jul 31, 2025

• BUG FIX: pandas.arrays.IntervalArray.overlaps() incorrectly documents that it accepts IntervalArray.

  #62009 opened Jul 31, 2025

• Fix cbusday calendar Typecheck v2

  #62014 opened Jul 31, 2025

• DOC: Add example for multi-column joins using `merge`

  #62016 opened Aug 1, 2025

• BUG: Fix is_signed_integer_dtype to handle abstract floating types (GH 62018)

  #62020 opened Aug 1, 2025

• continue from #61957 which closed with unmerged commit

  #62023 opened Aug 2, 2025

• DOC: fix mask/where docstring alignment note (#61781)

  #62029 opened Aug 2, 2025

• BUG: Catch TypeError in _is_dtype_type when converting abstract numpy types (#62018)

  #62030 opened Aug 3, 2025

• API: timestamp resolution inference: default to microseconds when possible

  #62031 opened Aug 3, 2025

• BUG: raise a proper exception when str.rsplit is passed a regex and clarify the docs

  #62035 opened Aug 3, 2025

• API: mode.nan_is_na to consistently distinguish NaN-vs-NA

  #62040 opened Aug 4, 2025

• DOC: updated BooleanDType docstring

  #62045 opened Aug 4, 2025

• BUG Updated border attribute to in-line CSS

  #62046 opened Aug 5, 2025

• BUG: Fix all-NaT when ArrowEA.astype to categorical

  #62055 opened Aug 6, 2025

• Update pytables.py to include a more thorough description of the min_itemsize variable

  #62068 opened Aug 8, 2025

• Move chained assignment detection to cython for Python 3.14 compat

  #62070 opened Aug 8, 2025

• DOC: Fix docstring validation errors for pandas.util.hash_pandas_object

  #62075 opened Aug 8, 2025

• BUG: Bug fix for implicit upcast to float64 for large series (more than 1000000 rows)

  #62077 opened Aug 8, 2025

• DOC: Validate docstrings for tseries.offsets.BusinessDay

  #62078 opened Aug 9, 2025

• DOC: Add docstring for asarray_tuplesafe in common.py

  #62079 opened Aug 9, 2025

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

  #62080 opened Aug 9, 2025

• BUG: Series.round with pd.NA no longer raises; coerce object+NA to nullable float and round; add test (#61712)

  #62081 opened Aug 9, 2025

• DOC: clarify Series alignment when assigning to DataFrame column (GH#39845)

  #62082 opened Aug 9, 2025

• BUG: Preserve full float precision when double_precision=15 in to_jso…

  #62083 opened Aug 9, 2025

• BUG: Fix assert_frame_equal with check_dtype=False for pd.NA with different dtypes

  #62092 opened Aug 12, 2025

• BUG: Preserve day freq on DatetimeIndex subtraction

  #62096 opened Aug 12, 2025

• DOC: Sort the pandas API reference navbar in alphabetical order

  #62099 opened Aug 12, 2025

• DEPR: Deprecate passing positional arguments in {DataFrame,Series}.groupby (except `by` and `level`)

  #62102 opened Aug 13, 2025

• DOC: Website should copy code only

  #62108 opened Aug 14, 2025

• fix(dtypes): ensure consistent behavior of is_string_dtype for Categorical

  #62117 opened Aug 15, 2025

• Switch default string storage from python to pyarrow (if installed) also for NA-variant of the StringDtype

  #62118 opened Aug 15, 2025

• Resolved issue 62094

  #62130 opened Aug 16, 2025

• ENH: Enable destination aware scope for dataset attributes metadata propagation copy routines

  #62131 opened Aug 16, 2025

• BUG: Fix groupby.apply() dropping _metadata from subclassed DataFrame

  #62135 opened Aug 18, 2025

• DOC: Deprecate empty string defaults in DataFrame.join suffixes

  #62136 opened Aug 18, 2025

• BUG: Preserve day freq on DatetimeIndex subtraction

  #62138 opened Aug 18, 2025

• BUG: Fix to_csv microsecond inconsistency (#62111)

  #62139 opened Aug 18, 2025

• DEPR: Categorical with values not present in categories

  #62142 opened Aug 18, 2025

• DOC: Clarify is_scalar docstring to specify scalar vs non-scalar and add Enum example (GH#62063)

  #62143 opened Aug 19, 2025

• fix enum typing from _lib

  #62145 opened Aug 19, 2025

• REF: get rid of StringArrayNumpySemantics

  #62149 opened Aug 19, 2025

• DEPR: .str accessor with object dtype

  #62159 opened Aug 20, 2025

• CLN: Replace warnings with Pandas4Warning

  #62162 opened Aug 21, 2025

• DOC: update the description for the 'docker build' command

  #62172 opened Aug 22, 2025

• BUG/TST: Series round with dtype object

  #62174 opened Aug 22, 2025

• BUG: Fix Index.get_level_values() mishandling of boolean, pd.NA, np.nan, and pd.NaT levels

  #62175 opened Aug 23, 2025

• BUG: upgrade to PyQt6 to fix arm64 docker build

  #62176 opened Aug 23, 2025

• REF: use _cast_pointwise_result in map

  #62177 opened Aug 23, 2025

• CLN: Lint for usage of Deprecation/FutureWarning

  #62178 opened Aug 23, 2025

138 Issues closed by 14 people

• RLS: 2.3.2

  #62148 closed Aug 22, 2025

• 1911902583

  #62167 closed Aug 22, 2025

• >>> import warnings >>> warnings.filterwarnings("ignore", "\nPyarrow", DeprecationWarning) >>> import pandas

  #62168 closed Aug 22, 2025

• ENH: Rename internal `DataFrame._append()`

  #57936 closed Aug 21, 2025

• REF/API/DEPR: _holds_integer checks in plotting

  #55897 closed Aug 21, 2025

• ENH: Add support to read and write Amazon ION files

  #55725 closed Aug 20, 2025

• REF: make _cast_pointwise_result an EA method

  #59895 closed Aug 20, 2025

• DOC: Point out difference in usage of "str" dtype in constructor and astype member

  #61992 closed Aug 20, 2025

• BUG: type error in `df.attrs.update()`

  #62140 closed Aug 18, 2025

• DOC: shift argument in `Series.shift()` is not used

  #61955 closed Aug 18, 2025

• BUG: Resampling a Series with a DST to 24 hours gives a different result depending on whether timedelta(hours=24) or "24H" was used.

  #35248 closed Aug 18, 2025

• ENH: preview_csv(***.csv) for Fast First-N-Line Preview on Large Plus Size (>100GB)

  #61281 closed Aug 18, 2025

• BUG: DataFrame.update() raises FutureWarning due to the use of 'where' method

  #57124 closed Aug 18, 2025

• `Documentation Improvement: Clarify setup steps and troubleshooting in CONTRIBUTING.md`

  #62107 closed Aug 16, 2025

• PERF: Importing pandas_parser lib takes 50MB of memory

  #62119 closed Aug 16, 2025

• BUG (2.0rc0): groupby apply with a UDF changes dtype unexpectedly from double[pyarrow] to float64

  #51991 closed Aug 15, 2025

• DOC: Provide examples of using read_parquet

  #49739 closed Aug 15, 2025

• BUILD: Nightly wheel building failed for some platforms

  #62093 closed Aug 15, 2025

• DEPR: attrs

  #52166 closed Aug 15, 2025

• BUG: Operations not implemented for non-1D ExtensionArrays

  #61866 closed Aug 14, 2025

• ENH/API: Timeseries Arithmetic frequency Alignment

  #12426 closed Aug 14, 2025

• Documentation Improvement: Clarify steps for setting up local development environment in CONTRIBUTING.md

  #62106 closed Aug 14, 2025

• BUG: Using `Series.str.contains()` with a compiled regex and arrow strings fails

  #61942 closed Aug 14, 2025

• BUG: Using `Series.str.fullmatch()` and `Series.str.match()` with a compiled regex fails with arrow strings

  #61952 closed Aug 14, 2025

• BUG: numpy.datetime64 unit counts ignored

  #39977 closed Aug 14, 2025

• BUG: `tz_localize(None)` incorrectly converts timestamps when using `pyarrow` dtypes

  #62100 closed Aug 14, 2025

• Suggestion: Pop row or multiple rows from a DataFrame

  #19501 closed Aug 14, 2025

• ENH: Add `pd.read_soql()` for Salesforce data retrieval

  #60966 closed Aug 14, 2025

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

  #61566 closed Aug 14, 2025

• Output formatting: the repr of the Categorical categories (quoted or unquoted strings?)

  #61890 closed Aug 13, 2025

• CI Failures due to new scipy and new numpydoc

  #61740 closed Aug 13, 2025

• DEPR: behavior of `copy` argument in `df.reindex` is confusing

  #34663 closed Aug 13, 2025

• BUG: read_csv loses precision when `engine='pyarrow'` and dtype Int64

  #56136 closed Aug 12, 2025

• BUG: `DataFrame.from_records()` ignores `columns` with iterator and `nrows=0`

  #61140 closed Aug 11, 2025

• API: Make 'D' & offsets.Day always operate as calendar day instead of 24 Hour

  #41943 closed Aug 11, 2025

• BUG: pd.date_range with DST-crossing has incorrect freq attribute

  #35388 closed Aug 11, 2025

• BUG: Incorrect freqstr "D" after timezone conversion

  #51716 closed Aug 11, 2025

• API: Breaking Changes in 3.0 (without deprecations)

  #44823 closed Aug 11, 2025

• BUG: tz_localize(None) with Arrow timestamp

  #61780 closed Aug 11, 2025

• BUG: Pandas to_datetime parsing error with "May" month

  #62084 closed Aug 11, 2025

• BLD: Drop Python 3.10 support

  #60059 closed Aug 9, 2025

• ENH: Persistent and Interoperable Accessors for NDFrame and Index (sliding window POC)

  #62064 closed Aug 8, 2025

• BUG: `series.reindex(mi)` behaves different for series with Index and MultiIndex

  #60923 closed Aug 7, 2025

• DOC: DataFrame.to_feather() does not accept *all* file-like objects

  #62057 closed Aug 6, 2025

• REF/API: make construct_array_type a non-classmethod

  #58663 closed Aug 6, 2025

• ENH: pd.DataFrame.describe(): rename top to mode

  #62056 closed Aug 6, 2025

• DOC: There is an unreadable dark text on the dark background in the getting started page

  #62061 closed Aug 6, 2025

• API: Series[Float64] == False

  #62048 closed Aug 6, 2025

• BUG: failing when groupby on data containing bytes

  #62047 closed Aug 6, 2025

• BUG: Pandas mean function fails on type pd.NA with axis=1 but not axis=0

  #62052 closed Aug 5, 2025

• BUG: groupby.idxmin/idxmax will all NA values

  #57745 closed Aug 5, 2025

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

  #61311 closed Aug 5, 2025

• QST: How to convert large queryset into dataframes in optimized way?

  #55371 closed Aug 5, 2025

• BUG: replace value failed

  #61643 closed Aug 5, 2025

• DOC: Issue with the general expressiveness of the docs

  #61392 closed Aug 5, 2025

• ENH: fillna enhancement with method='nearest'

  #61124 closed Aug 5, 2025

• PERF: why nlargest is so slower?

  #61076 closed Aug 5, 2025

• DOC: Pivot() example call incorrectly used and would give "error: duplicate index"

  #61058 closed Aug 5, 2025

• BUILD: Trouble installing pandas on Windows

  #60947 closed Aug 5, 2025

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

  #61218 closed Aug 5, 2025

• PERF: Setting an item of incompatible dtype

  #61456 closed Aug 5, 2025

• BUG: Unknown Error - Getting from Databricks SQL Python - From PyArrow module (pyarrow.lib.ArrowException)

  #60838 closed Aug 5, 2025

• BUG: "python make.py html" for documentation is giving error

  #60039 closed Aug 5, 2025

• BUG: DataFrame Dict not callabe

  #60086 closed Aug 5, 2025

• ENH: Restore the functionality of `.fillna`

  #59831 closed Aug 5, 2025

• ENH: Add a clear option to interpret strings as Pandas dtypes specifically.

  #59777 closed Aug 5, 2025

• BUG: QST: `pd.read_html` gives tables with duplicated columns

  #56337 closed Aug 5, 2025

• BUG: memory leak when using read_csv with python engine

  #59694 closed Aug 5, 2025

• Bug in Chunk Processing: Non-NULL IDs Become NULL During IterationBUG:

  #59477 closed Aug 5, 2025

• BUG: ArrowNotImplementedError: Unsupported cast from int64 to null using function cast_null

  #59497 closed Aug 5, 2025

• BUG: import has error

  #59527 closed Aug 5, 2025

• Title: Feature Request: Improve diff Function to Support Forward and Backward CompletionENH:

  #59465 closed Aug 5, 2025

• BUG: diff method incorrect on datetime64[s]

  #59650 closed Aug 5, 2025

• ENH: Make merge_asof preserve the index

  #60919 closed Aug 5, 2025

• BUG: Memory leak when creating a df inside a loop

  #60897 closed Aug 5, 2025

• BUG: NameError: name 'pa' is not defined despite `pyarrow` is installed

  #60573 closed Aug 5, 2025

• PERF: index.unique much slower than get_level_values.drop_duplicates

  #60213 closed Aug 5, 2025

• BUG: reading long csv with high numeric values displays a "mixed types" message

  #60082 closed Aug 5, 2025

• BUG: Warning when compiling pandas/_libs/algos.c

  #58829 closed Aug 5, 2025

• ENH: In pandas.testing.assert_frame_equal, support per-column configuration

  #59548 closed Aug 5, 2025

• 'base' argument when resampling has no effect

  #22855 closed Aug 5, 2025

• ENH: PyPy Support

  #42509 closed Aug 5, 2025

• ENH: Allow storing timezone-aware datetimes in a series with a datetime64 dtype

  #46998 closed Aug 5, 2025

• Decrypting file in read_csv

  #44097 closed Aug 5, 2025

• BUG: StringArray is a subclass of PandasArray

  #48638 closed Aug 5, 2025

• DOC: Enhance '10 minute to pandas' by providing video walkthrough to help auditory learners and improve accessibility.

  #59359 closed Aug 5, 2025

• BUG: 2.2.2 pep517 build fails

  #58274 closed Aug 5, 2025

• ENH: Exp function for Series and DataFrame

  #56748 closed Aug 5, 2025

• ENH: Add first_inverted and last_inverted options to keep in DataFrame.duplicated

  #60394 closed Aug 5, 2025

• BUG: Timestamp.tz and DatetimeIndex.tz are inconsistent when pytz 2024.2 is installed

  #59833 closed Aug 5, 2025

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

  #60023 closed Aug 5, 2025

• ENH: A .chi2() method on the DataFrame and Series class that will resemble the .corr() methods

  #60111 closed Aug 5, 2025

• ENH: Decimal year

  #60391 closed Aug 5, 2025

• PERF: Extreme regression in 2.2 when aggregating a DataFrame with .attrs data

  #60070 closed Aug 5, 2025

• ENH: Make pd.Timestamp.astimezone() default to local timezone

  #60692 closed Aug 5, 2025

• ENH: Automate reading of data in chunks

  #61110 closed Aug 5, 2025

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

  #61232 closed Aug 5, 2025

• ENH: read_csv tz option

  #61535 closed Aug 5, 2025

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

  #61860 closed Aug 5, 2025

• ENH: Images embedded in cells. The DISPIMG function of WPS

  #61888 closed Aug 5, 2025

• ENH: Add a safe Option to hash_pandas_object with Default Value Set to True

  #60428 closed Aug 5, 2025

• BUG: alpine 3.21 install issue

  #60554 closed Aug 5, 2025

• ENH: Add an iterdicts() function

  #60901 closed Aug 5, 2025

• BUG: Pandas resets counter when using filterwarning "once"

  #60664 closed Aug 5, 2025

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

  #60786 closed Aug 5, 2025

• ENH: Add a function like PYQT signal

  #61829 closed Aug 5, 2025

• BUG: 'Sphinx parallel build error' when building docs locally prevents index.html creation

  #61975 closed Aug 5, 2025

• DOC: Series and DataFrame.reindex accepts Timedelta as tolerance, which is not documented

  #62010 closed Aug 5, 2025

• QST: best way to extend/subclass pandas.DataFrame

  #61362 closed Aug 5, 2025

• ENH: Add a name parameter to value_counts()

  #55121 closed Aug 5, 2025

• BUG: Can't convert `int64[pyarrow]` series with missing values to legacy numpy `float` series

  #57093 closed Aug 5, 2025

• issubdtype(<categorical>, np.bool_) raises error

  #9581 closed Aug 2, 2025

• API: Expand read_csv dtype for categoricals

  #14503 closed Aug 2, 2025

• Dask shuffle performance help

  #43155 closed Aug 2, 2025

• ENH: to_offset "year"/"quarter"/"month"/"day"/...?

  #34586 closed Aug 2, 2025

• inf comparison doesn't emulate NaN with use_inf_as_null

  #16756 closed Aug 1, 2025

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

  #61662 closed Aug 1, 2025

• BUG: Inconsistent `datetime` dtype based on how the dataframe gets initialized

  #61993 closed Jul 31, 2025

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

  #61627 closed Jul 31, 2025

• BUG: Writing UUIDs fail

  #61602 closed Jul 31, 2025

• DOC:

  #55125 closed Jul 30, 2025

• BUG: Python Package fails to load for some users, but not others.

  #61991 closed Jul 30, 2025

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

  #60234 closed Jul 29, 2025

• PERF: `pandas.DataFrame.stack` with `future_stack=True`

  #61994 closed Jul 29, 2025

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

  #61636 closed Jul 29, 2025

• BUG: Groupby-aggregate on a boolean column returns a different datatype with pyarrow than with numpy

  #53030 closed Jul 29, 2025

• DOC: Improve docstrings in utility functions in pandas/core/common.py (lines 176–210)

  #61986 closed Jul 29, 2025

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

  #61622 closed Jul 28, 2025

• BUG: infer_dtype returns "mixed" for complex and pd.NA mix

  #61976 closed Jul 28, 2025

• RLS: 2.3.1

  #61590 closed Jul 28, 2025

• DOC: code coverage app provided in documentation is invalid

  #61968 closed Jul 27, 2025

• ENH: astype(object) does not convert numpy strings to str

  #60496 closed Jul 26, 2025

• DOC: fix doctests for repr changes with the new string dtype

  #61886 closed Jul 26, 2025

• BUG: make to_json with JSON Table Schema work correctly with string dtype

  #61889 closed Jul 26, 2025

• BUG: Cannot interpret string dtype as a valid data type

  #61915 closed Jul 26, 2025

• BUG: Replacement fails after NA value with PyArrow-backed strings

  #61948 closed Jul 25, 2025

• DOC: Add tzdata to dependencies section in README

  #61927 closed Jul 25, 2025

• BUG: Unexpected Code Segment Executed, Causing Logical Error

  #61932 closed Jul 24, 2025

47 Issues opened by 34 people

• BUG: Index.get_level_values() does not handle boolean, pd.NA, np.nan, or pd.NaT `level` correctly

  #62169 opened Aug 21, 2025

• REF: use _cast_pointwise_result in map

  #62164 opened Aug 21, 2025

• DOC: date_range/timedelta_range confusing 3 out of 4 arguments note

  #62161 opened Aug 20, 2025

• API: indexing dates-with-datetime64

  #62158 opened Aug 20, 2025

• BUG/API: comparison datetime64-vs-dates

  #62157 opened Aug 20, 2025

• BUG: resampling with origin=end_date includes extra elements in the bucket

  #62154 opened Aug 20, 2025

• BUG: Inconsistent behaviour when merging reset-ed MultiIndex dataframe

  #62150 opened Aug 20, 2025

• BUG: Fails to Build on Raspberry Pi 3 (tested both 2.1.4, 2.3.1 and main Branch)

  #62146 opened Aug 19, 2025

• BUG / API: setitem on pandas object fails if underlying numpy array is read-only

  #62144 opened Aug 19, 2025

• ENH: Consistent `name` property for the iterates in `DataFrameGroupBy`

  #62141 opened Aug 18, 2025

• BUG: groupby.apply() drops _metadata from subclassed DataFrame

  #62134 opened Aug 17, 2025

• REF/API: Move ArrowDtype(pa.foo_string()) into StringDtype(...)

  #62129 opened Aug 16, 2025

• BUG: Addition of __set_module__ breaks PyCharm PyDev debugger functionalities

  #62121 opened Aug 15, 2025

• BUG: to_csv uses inconsistent microsecond format for datetimes with timezones

  #62111 opened Aug 15, 2025

• BUG: `pd.api.types.is_string_dtype()` returns inconsistent results for Categorical series vs dtype

  #62109 opened Aug 14, 2025

• ENH: Remove the DataFrame.attrs saving to parquet metadata on Pandas' side

  #62098 opened Aug 12, 2025

• DEPR: rename 'unit' keyword in to_datetime etc

  #62097 opened Aug 12, 2025

• BUG: In main, TimedeltaIndex.shift() requires freq in the index, but it may not be available because it was computed

  #62094 opened Aug 12, 2025

• ENH: More compact printing of a DataFrame with MultiIndex columns

  #62089 opened Aug 11, 2025

• BUG: DataFrame.to_json() does not accurately serialize floats such that they can be deserialized without lost information

  #62072 opened Aug 8, 2025

• BUG:Pandas: Custom Metadata in DataFrame Subclass Not Deep-Copied

  #62071 opened Aug 8, 2025

• BUG: is_scalar(Enum) gives False

  #62063 opened Aug 7, 2025

• BUG: Inconsistent behavior of `MultiIndex.union` depending on duplicates and names

  #62059 opened Aug 6, 2025

• BUG: ArrowEA.astype to categorical returning all-NaT

  #62051 opened Aug 5, 2025

• ENH: String functions for df.aggregate()

  #62050 opened Aug 5, 2025

• BUG: rank with object dtype and small values

  #62036 opened Aug 3, 2025

• BUG: Wrong inferred type in case of a mixture of boolean, float and integers

  #62033 opened Aug 3, 2025

• API: NaN vs NA in mixed reduction

  #62024 opened Aug 2, 2025

• DEPR: convert_dtypes keywords

  #62022 opened Aug 2, 2025

• BUG: pd.api.types.is_signed_integer_dtype(np.floating) throws TypeError

  #62018 opened Aug 1, 2025

• BUG: Sql select from database type cast issue

  #62013 opened Jul 31, 2025

• BUG: `assert_series_equal` broken with `check_category_order=False` for arrays with null values

  #62008 opened Jul 31, 2025

• BUG: `IntervalArray.overlaps()` documents that it accepts another `IntervalArray`, but it is not implemented

  #62004 opened Jul 30, 2025

• ENH: error messages for missing optional dependencies should point out the options

  #62001 opened Jul 30, 2025

• DOC: documenting pandas.MultIndex.argsort

  #61998 opened Jul 29, 2025

• BUG: Boolean Column Indexing Issue in Pandas

  #61980 opened Jul 28, 2025

• ENH: Function‑scoped bad‑line callback for read_csv that provides line_number (immediate per‑row handling without global side‑effects)

  #61978 opened Jul 27, 2025

• BUG: The lines skipped by pd.read_csv(path, chunksize=n, on_bad_lines='skip') depends on `n`.

  #61973 opened Jul 27, 2025

• BUG: Implicit upcast to float64 for large series (more than 1000000 rows)

  #61951 opened Jul 25, 2025

• BUG: border attribute used in html.py was deprecated in HTML5

  #61949 opened Jul 25, 2025

• DOC: Standardize noncompliant docstrings in pandas/io/html.py (flake8-docstrings)

  #61944 opened Jul 25, 2025

• BUG: series.groupby(level=0) and series.groupby(pd.Grouper(level=0)) produce different orders

  #61943 opened Jul 25, 2025

• BUG: Using `/` operator with a `Path` and `Series` of string dtype fails

  #61940 opened Jul 24, 2025

• DOC: Docstring for BooleanDType inconsistent with the rest of repo

  #61939 opened Jul 24, 2025

• BUG: `metadata` on `np.ndarray` of `np.dtype("O")` dtype lost when roundtripped through `pandas.Series`

  #61938 opened Jul 24, 2025

• BUG: `Index` accepts lists as values

  #61937 opened Jul 24, 2025

• BUG: `assert_index_equal(CategoricalIndex, CategoricalIndex, check_categorical=True, exact=False)` raises TypeError instead of AssertionError

  #61935 opened Jul 24, 2025

223 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.

• CoW: add readonly flag to ExtensionArrays, return read-only EA/ndarray in .array/EA.to_numpy()

  #61925 commented on Aug 19, 2025 • 13 new comments

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

  #61828 commented on Aug 23, 2025 • 11 new comments

• BUG: IntervalIndex.unique() only contains the first interval if all interval borders are negative

  #61920 commented on Aug 1, 2025 • 5 new comments

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

  #61682 commented on Aug 17, 2025 • 5 new comments

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

  #60772 commented on Jul 30, 2025 • 3 new comments

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

  #61396 commented on Aug 20, 2025 • 3 new comments

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

  #61644 commented on Aug 14, 2025 • 2 new comments

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

  #61820 commented on Aug 14, 2025 • 2 new comments

• DOC: Document that str.match accepts a regular expression

  #61879 commented on Jul 26, 2025 • 1 new comment

• BUG: Fix inconsistency with DateOffset near DST

  #61870 commented on Aug 21, 2025 • 1 new comment

• TST: Use matplotlib's compare_images to check plots

  #5379 commented on Aug 19, 2025 • 0 new comments

• BUG: PeriodIndex to DatetimeIndex fail or have wrong/no frequency

  #58092 commented on Aug 19, 2025 • 0 new comments

• BUG (string dtype): comparison of string column to mixed object column fails

  #60228 commented on Aug 19, 2025 • 0 new comments

• BUG: regression in master for DataFrame.sparse.from_spmatrix

  #59212 commented on Aug 18, 2025 • 0 new comments

• BUG: Inconsistent behavior surrounding pd.fillna

  #61568 commented on Aug 18, 2025 • 0 new comments

• BUG: Incorrect timedelta with tz_localize and nonexistent times

  #40705 commented on Aug 18, 2025 • 0 new comments

• BUG: tz_localize gives incorrect shift_forward value in some European timezones

  #40915 commented on Aug 18, 2025 • 0 new comments

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

  #58989 commented on Aug 18, 2025 • 0 new comments

• DOC: Simplify pandas theme footer

  #51536 commented on Aug 18, 2025 • 0 new comments

• BUG: Test failures with 2.2.3 on Fedora Rawhide

  #60589 commented on Aug 18, 2025 • 0 new comments

• DOC: add button to edit on GitHub

  #39859 commented on Jul 30, 2025 • 0 new comments

• `pd.groupby` seems to mutate my `pd.Grouper` in-place

  #26564 commented on Aug 19, 2025 • 0 new comments

• BUG: df created with `columns` takes exceedingly long time for `sum()`

  #45816 commented on Aug 19, 2025 • 0 new comments

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

  #61581 commented on Aug 19, 2025 • 0 new comments

• BUG: Pandas column rename function now working for multilevel columns

  #55169 commented on Aug 20, 2025 • 0 new comments

• ENH: Behaviour Series.isin with dataframe comparison is confusing [for discussion]

  #43460 commented on Aug 20, 2025 • 0 new comments

• DOC: Incorrect Source Link

  #58350 commented on Aug 20, 2025 • 0 new comments

• DEPR: SeriesGroupBy._aggregate_named

  #41090 commented on Aug 20, 2025 • 0 new comments

• ENH: Pandas Tensor Data Type

  #59006 commented on Aug 20, 2025 • 0 new comments

• BUG: non-monotonic DatetimeIndex does not raise KeyError for missing labels

  #7827 commented on Aug 21, 2025 • 0 new comments

• Aliases for column names

  #11723 commented on Aug 21, 2025 • 0 new comments

• DEPR: Deprecate `.str` accessor on object-dtype.

  #29710 commented on Aug 21, 2025 • 0 new comments

• BUG: assignment fails with copy_on_write = True

  #60309 commented on Aug 21, 2025 • 0 new comments

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

  #61466 commented on Aug 21, 2025 • 0 new comments

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

  #61675 commented on Aug 21, 2025 • 0 new comments

• BUG: Multindex difference not working on columns with type Timestamp[ns][pyarrow]

  #61382 commented on Aug 15, 2025 • 0 new comments

• BUG: concat_{categorical, compat} leads to erroneous result on non-ns datetime-EA

  #33331 commented on Aug 15, 2025 • 0 new comments

• IntervalIndex level in MultiIndex does not work as expected

  #25298 commented on Aug 15, 2025 • 0 new comments

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

  #59447 commented on Aug 15, 2025 • 0 new comments

• startingMonth ignored on non-unitary Quarter periods

  #29576 commented on Aug 15, 2025 • 0 new comments

• DOC: description of record_prefix param for json_normalize is wrong

  #54121 commented on Aug 15, 2025 • 0 new comments

• ENH: show the raw unicode in the output formatting of Index/array?

  #60819 commented on Aug 15, 2025 • 0 new comments

• DOC: Example missing in pandas.DataFrame.to_html

  #44945 commented on Aug 15, 2025 • 0 new comments

• Change default string storage from "python" to "pyarrow" (if installed) for for NA-variant of StringDtype

  #60287 commented on Aug 15, 2025 • 0 new comments

• ENH: set `__module__` on top-level public objects

  #55178 commented on Aug 15, 2025 • 0 new comments

• BUG: Categorical columns using the PyArrow backend requires 4x more memory

  #58062 commented on Aug 15, 2025 • 0 new comments

• BUG: pyarrow dictionary type ordered argument not respected

  #58152 commented on Aug 15, 2025 • 0 new comments

• API: Specify the behaviour for operating on empty objects

  #47959 commented on Aug 15, 2025 • 0 new comments

• issue when shifting with Timedelta in a groupby

  #20492 commented on Aug 16, 2025 • 0 new comments

• BUG: Python 3.14 may not increment refcount

  #61368 commented on Aug 16, 2025 • 0 new comments

• BUG: `isna` on pyarrow backed Series is returning Series with `bool` dtype instead of `bool[pyarrow]`

  #59431 commented on Aug 16, 2025 • 0 new comments

• API/BUG: freq retention in value_counts

  #33830 commented on Aug 16, 2025 • 0 new comments

• BUG: `np.where` called with `ps.Series` returns `np.array` instead of `pd.Series`

  #58329 commented on Aug 17, 2025 • 0 new comments

• BUG: Inconsistent implicit conversion of 1-arrays inside data frames

  #57923 commented on Aug 17, 2025 • 0 new comments

• BUG: `Timestamp.unit` should reflect changes in components after `Timestamp.replace`

  #57749 commented on Aug 17, 2025 • 0 new comments

• ENH: No longer always show hour, minute and second components for pd.Interval

  #57748 commented on Aug 17, 2025 • 0 new comments

• BUG: MultiIndex.factorize fails if index is 0-length

  #57517 commented on Aug 17, 2025 • 0 new comments

• BUG: Identity checking NA in `map` is incorrect

  #57390 commented on Aug 17, 2025 • 0 new comments

• BUG: FutureWarning when splitting a dataframe using `np.split`

  #57351 commented on Aug 17, 2025 • 0 new comments

• BUG: `pd.Arrays.SparseArray` warning inconsistencies when contained in a `pd.DataFrame` (potential false positive)

  #58582 commented on Aug 17, 2025 • 0 new comments

• Export to excel for multiindex columns

  #11292 commented on Aug 17, 2025 • 0 new comments

• String dtype: backwards compatibility of selecting "object" vs "str" columns in `select_dtypes`

  #61916 commented on Aug 21, 2025 • 0 new comments

• PDEP-18: Nullable Object Dtype

  #61599 commented on Jul 28, 2025 • 0 new comments

• Fix void dtype handling

  #61637 commented on Aug 20, 2025 • 0 new comments

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

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

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

  #61651 commented on Jul 27, 2025 • 0 new comments

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

  #61659 commented on Aug 19, 2025 • 0 new comments

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

  #61670 commented on Aug 16, 2025 • 0 new comments

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

  #61679 commented on Aug 21, 2025 • 0 new comments

• Raise MergeError on mismatched signed/unsigned int merge keys

  #61694 commented on Jul 26, 2025 • 0 new comments

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

  #61706 commented on Aug 23, 2025 • 0 new comments

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

  #61717 commented on Aug 14, 2025 • 0 new comments

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

  #61718 commented on Jul 29, 2025 • 0 new comments

• API: consistent NaN treatment for pyarrow dtypes

  #61732 commented on Aug 11, 2025 • 0 new comments

• adding pandas.api.typing.aliases and docs

  #61735 commented on Aug 17, 2025 • 0 new comments

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

  #61742 commented on Jul 31, 2025 • 0 new comments

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

  #61748 commented on Aug 22, 2025 • 0 new comments

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

  #61764 commented on Aug 22, 2025 • 0 new comments

• Improve MultiIndex label rename checks

  #61769 commented on Aug 22, 2025 • 0 new comments

• TST: assert reading of legacy pickles against current data

  #61792 commented on Aug 10, 2025 • 0 new comments

• BUG: DataFrame.aggregate to preserve extension dtypes with callable functions

  #61816 commented on Aug 22, 2025 • 0 new comments

• BUG FIX: None of the included dtypes present in df will raise ValueError with clear error message.

  #61871 commented on Jul 26, 2025 • 0 new comments

• DEPR: PeriodDtype.freq

  #61897 commented on Aug 21, 2025 • 0 new comments

• BUG: Raise ParserWarning when on_bad_lines is callable and index_col is set (GH#61882)

  #61902 commented on Aug 22, 2025 • 0 new comments

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

  #61910 commented on Aug 20, 2025 • 0 new comments

• DOC: mention .attrs are preserved in Parquet IO for pyarrow engine

  #61912 commented on Aug 6, 2025 • 0 new comments

• Updating error message to include more details about dataframe

  #61929 commented on Aug 7, 2025 • 0 new comments

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

  #61294 commented on Aug 22, 2025 • 0 new comments

• Series.map on a Categorical with a function only processes each unique value once

  #15706 commented on Aug 22, 2025 • 0 new comments

• BUG: Confusing error message when `to_datetime` fails for times

  #46509 commented on Aug 22, 2025 • 0 new comments

• BUG: Enlarging DataFrame with 2d indexer converts ints to floats

  #47503 commented on Aug 23, 2025 • 0 new comments

• BUG: DataFrame.at allows adding new rows to a DataFrame

  #48323 commented on Aug 23, 2025 • 0 new comments

• BUG: Cannot use .loc to set a ndarray as the value of an empty dataframe

  #49972 commented on Aug 23, 2025 • 0 new comments

• BUG: itemsize wrong for date32[day][pyarrow] dtype?

  #57948 commented on Aug 23, 2025 • 0 new comments

• BUG: `Series.map` to tuple values fails for category dtype

  #41669 commented on Aug 23, 2025 • 0 new comments

• BUG: CategoricalIndex.fillna with a tuple category

  #37681 commented on Aug 23, 2025 • 0 new comments

• Metadata generation failed when installing PyQt5

  #61037 commented on Aug 23, 2025 • 0 new comments

• DEPR: List of deprecations to be removed in 4.0

  #56596 commented on Aug 23, 2025 • 0 new comments

• DEPR: List of deprecations to be removed in 3.0

  #50578 commented on Aug 23, 2025 • 0 new comments

• BUG: DataFrame.rank does not return EA types when original type was an EADtype

  #52829 commented on Aug 23, 2025 • 0 new comments

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

  #58072 commented on Aug 5, 2025 • 0 new comments

• ENH: support reading directory in read_csv

  #61275 commented on Aug 21, 2025 • 0 new comments

• ENH: Implement translations infrastructure

  #61380 commented on Aug 6, 2025 • 0 new comments

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

  #61381 commented on Jul 27, 2025 • 0 new comments

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

  #61457 commented on Jul 29, 2025 • 0 new comments

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

  #61465 commented on Jul 26, 2025 • 0 new comments

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

  #61481 commented on Jul 26, 2025 • 0 new comments

• Implemented NumbaExecutionEngine

  #61487 commented on Jul 31, 2025 • 0 new comments

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

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

• ENH: Support Plugin Accessors Via Entry Points

  #61499 commented on Aug 20, 2025 • 0 new comments

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

  #61530 commented on Jul 25, 2025 • 0 new comments

• Parallelize test_sql.py - Issue #60378

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

• BUG: Merge fails on pyarrow datetime columns

  #61926 commented on Jul 31, 2025 • 0 new comments

• Read_csv leaks memory when used in multiple threads

  #19941 commented on Aug 1, 2025 • 0 new comments

• ENH: convert masked arrays for Series

  #20427 commented on Aug 1, 2025 • 0 new comments

• BUG: Read hdfs:/// is broken since 2.1.0

  #58078 commented on Aug 1, 2025 • 0 new comments

• ENH: Include `df.attrs` in `to_json` output

  #51012 commented on Aug 2, 2025 • 0 new comments

• ENH: Disallow duplicate column names everywhere by default

  #53217 commented on Aug 2, 2025 • 0 new comments

• ENH: Include df.attrs in to_csv output

  #53577 commented on Aug 2, 2025 • 0 new comments

• QST: "Dummy" is rooted in ableist language

  #35724 commented on Aug 2, 2025 • 0 new comments

• Idea: Make pd.Index.values not writable

  #33001 commented on Aug 2, 2025 • 0 new comments

• ENH: Implementing NEP 18's __array_function__

  #26380 commented on Aug 2, 2025 • 0 new comments

• ENH: Add Support for GroupBy Numeric Operations

  #20060 commented on Aug 2, 2025 • 0 new comments

• Groupby.mode() - feature request

  #19254 commented on Aug 2, 2025 • 0 new comments

• ENH: .interval accessor

  #16401 commented on Aug 2, 2025 • 0 new comments

• Add axis argument to DataFrame.corr

  #35002 commented on Aug 2, 2025 • 0 new comments

• BUG: ValueError: Buffer dtype mismatch, expected 'intp_t' but got 'long long' on ARMv7 32 bit

  #55305 commented on Aug 2, 2025 • 0 new comments

• BUG/API: round-tripping non-nano datetime64s with to_json/read_json

  #55827 commented on Aug 3, 2025 • 0 new comments

• BUG: pd.Timestamp() defaults to [s] resolution instead of [ns]

  #52653 commented on Aug 3, 2025 • 0 new comments

• API: resolution for date_range, to_datetime, timedelta_range, to_timedelta

  #49060 commented on Aug 3, 2025 • 0 new comments

• BUG: Instantiating pandas._libs.parsers.TextReader segfaults

  #53131 commented on Aug 4, 2025 • 0 new comments

• dtype-unaware (empty) objects ("any" dtype)

  #19647 commented on Aug 4, 2025 • 0 new comments

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

  #60159 commented on Aug 4, 2025 • 0 new comments

• BUG: Empty list passed to `Series` returns `object` dtype, but via `DataFrame` returns `float64`

  #56679 commented on Aug 4, 2025 • 0 new comments

• BUG: Different initialization methods lead to different dtypes (DataFrame)

  #42971 commented on Aug 4, 2025 • 0 new comments

• Dtype inconsistency when appending to empty dataframe

  #22621 commented on Aug 4, 2025 • 0 new comments

• DOC: Fix docstring validation errors for pandas.core.groupby

  #60365 commented on Aug 4, 2025 • 0 new comments

• Understanding string interning in pd.read_csv vs. other methods of creating large object columns

  #52639 commented on Aug 5, 2025 • 0 new comments

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

  #60813 commented on Aug 5, 2025 • 0 new comments

• BUG: Pandas Series with Xarray slow print time.

  #61809 commented on Jul 23, 2025 • 0 new comments

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

  #61838 commented on Jul 24, 2025 • 0 new comments

• DOC/ERR: better error message on unsuccessful datetime parsing

  #10720 commented on Jul 24, 2025 • 0 new comments

• indexing with a `Categorical` of `Interval`s is inefficient

  #61928 commented on Jul 24, 2025 • 0 new comments

• BUG: Decimal and float-to-int conversion issues with pyarrow ≥18.0.0 in parquet and Arrow dtype tests

  #61464 commented on Jul 24, 2025 • 0 new comments

• BUG: should constructing Index from a Series make a copy?

  #42934 commented on Jul 24, 2025 • 0 new comments

• ENH: Add Polars engine to read_csv

  #61813 commented on Jul 24, 2025 • 0 new comments

• DOC: SQL-style join conditions

  #57722 commented on Jul 25, 2025 • 0 new comments

• DOC: min_itemsize for HDFStore append for encoded strings

  #14601 commented on Jul 25, 2025 • 0 new comments

• PERF: `DataFrame.copy(deep=True)` returns a view on the original pyarrow buffer

  #61930 commented on Jul 25, 2025 • 0 new comments

• BUG: `IntervalIndex.unique()` only contains the first interval if all interval borders are negative

  #61917 commented on Jul 26, 2025 • 0 new comments

• DOC: section on caveats of storing lists inside DataFrame/Series

  #17027 commented on Jul 26, 2025 • 0 new comments

• ENH: adding .unique() to DF (or return_inverse for duplicated)

  #21357 commented on Jul 27, 2025 • 0 new comments

• DOC: floating point precision on writing/reading to csv

  #13159 commented on Jul 27, 2025 • 0 new comments

• method `df.merge` is resetting the index

  #51796 commented on Jul 28, 2025 • 0 new comments

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

  #61807 commented on Jul 28, 2025 • 0 new comments

• RLS: 3.0

  #57064 commented on Jul 28, 2025 • 0 new comments

• BUG: Column of dtype Categorical in DataFrame encounters error when taking a row that includes nan in the column

  #58954 commented on Jul 28, 2025 • 0 new comments

• BUG: pandas.Index takes multidimensional array as input

  #20285 commented on Jul 29, 2025 • 0 new comments

• ENH: ExcelWriter append or create mode

  #61634 commented on Jul 29, 2025 • 0 new comments

• Thousands separator for to_csv

  #30045 commented on Jul 29, 2025 • 0 new comments

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

  #61812 commented on Jul 29, 2025 • 0 new comments

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

  #54792 commented on Jul 29, 2025 • 0 new comments

• BUG: resampling with origin='end_day' raises ValueError: Values falls before first bin

  #44957 commented on Jul 30, 2025 • 0 new comments

• BUG: CustomBusinessDay not respecting calendar

  #60647 commented on Jul 30, 2025 • 0 new comments

• BUG: Inconsistent .values NA/NaN

  #61856 commented on Jul 30, 2025 • 0 new comments

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

  #54466 commented on Jul 30, 2025 • 0 new comments

• ENH: error message context.

  #61834 commented on Jul 30, 2025 • 0 new comments

• ENH: Generalized head and tail method.

  #44384 commented on Aug 12, 2025 • 0 new comments

• ENH: Shall we let pd.NA * 0 equals to zero?

  #47117 commented on Aug 12, 2025 • 0 new comments

• ENH: add errors='coerce' to DataFrame.astype

  #48781 commented on Aug 12, 2025 • 0 new comments

• ENH: devcontainer & docker: use cases and improvements

  #54862 commented on Aug 12, 2025 • 0 new comments

• ENH: Support attrs in feather files

  #60675 commented on Aug 12, 2025 • 0 new comments

• ENH: Functionality to aid with Database Imports

  #61247 commented on Aug 12, 2025 • 0 new comments

• BUG: inconsistent behavior and crash in `DataFrame.__setitem__` when >=3d ndarray is used

  #53366 commented on Aug 13, 2025 • 0 new comments

• ENH: pd.to_sql(upsert=True, upsert_on_columns=['game_id'])

  #60434 commented on Aug 13, 2025 • 0 new comments

• API: return value of `.values` for Series with the future string dtype (numpy array vs extension array)

  #60301 commented on Aug 13, 2025 • 0 new comments

• ENH: pandas mutate, add R's mutate functionality to enable users to easily create new columns in data frames

  #56499 commented on Aug 13, 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 Aug 14, 2025 • 0 new comments

• API: `astype` method fails to raise errors for `category` data type

  #59899 commented on Aug 14, 2025 • 0 new comments

• API: handling of missing values in Index.__contains__

  #59765 commented on Aug 14, 2025 • 0 new comments

• ENH: cumcount() for DataFrames and Series

  #12648 commented on Aug 14, 2025 • 0 new comments

• Categorical data not supported in plots of parallel coordinates

  #12341 commented on Aug 14, 2025 • 0 new comments

• Release GIL for Merge

  #13745 commented on Aug 14, 2025 • 0 new comments

• read_excel provides uninformative error message when reading from sheet with duplicate multiindex columns

  #19395 commented on Aug 14, 2025 • 0 new comments

• ENH: Add argument "multiprocessing" to DataFrame.apply() method (any axis)

  #37956 commented on Aug 14, 2025 • 0 new comments

• BUG: Behaviour of sum/mean on sparse boolean arrays changed between 1.5.3 and pandas 2.2

  #58015 commented on Aug 14, 2025 • 0 new comments

• BUG: 1.5.0rc0 extract_links modifies type first item in tuple

  #48355 commented on Aug 14, 2025 • 0 new comments

• BUG: many dataframe operations broken when a column contains numpy structured array

  #60108 commented on Aug 14, 2025 • 0 new comments

• DEPR: pd.concat special cases DatetimeIndex to sort even when sort=False

  #57335 commented on Aug 14, 2025 • 0 new comments

• BUG: StringArray __array_ufunc__ validation of result should not require strings

  #40800 commented on Aug 15, 2025 • 0 new comments

• BUG: Arrow Struct columns cannot be grouped on (ArrowNotImplementedError)

  #60594 commented on Aug 15, 2025 • 0 new comments

• BUG: category index levels casted to non-category dtype in merge

  #37480 commented on Aug 15, 2025 • 0 new comments

• BUG: Exception with `unstack(sort=False)` and NA in index

  #61221 commented on Aug 15, 2025 • 0 new comments

• BUG: `.str.contains()` regex lookbehind and lookahead fail for data type `string[pyarrow]`

  #60833 commented on Aug 15, 2025 • 0 new comments

• DOC: s3fs is required when using `read_csv` with an S3 URI

  #35206 commented on Aug 15, 2025 • 0 new comments

• Follow-up on basic FloatingArray implementation

  #38110 commented on Aug 5, 2025 • 0 new comments

• Should IntegerArray provide data / mask through an API?

  #34873 commented on Aug 5, 2025 • 0 new comments

• ENH: Support for list of intervals / IntervalArray in to_parquet

  #34644 commented on Aug 5, 2025 • 0 new comments

• ENH: unset_index method

  #60869 commented on Aug 5, 2025 • 0 new comments

• DOC: use shared_docs for isna/notna & isnull/notnull

  #17096 commented on Aug 5, 2025 • 0 new comments

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

  #60326 commented on Aug 5, 2025 • 0 new comments

• DOC: Add link to the "try pandas online" in the regular documentation

  #61060 commented on Aug 6, 2025 • 0 new comments

• BUG: pyarrow stripping leading zeros with dtype=str

  #57666 commented on Aug 6, 2025 • 0 new comments

• Missing Values and Categoricals - inconsistent dtypes

  #23242 commented on Aug 6, 2025 • 0 new comments

• BUG: why arrow only work on mac arm？

  #60714 commented on Aug 6, 2025 • 0 new comments

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

  #60611 commented on Aug 6, 2025 • 0 new comments

• QST:

  #58930 commented on Aug 6, 2025 • 0 new comments

• DOC: Reindexing behaviour of dataframe column-assignment missing

  #39845 commented on Aug 6, 2025 • 0 new comments

• BUG: groupby.sum() is inconsistent with df.sum() for large integers

  #34681 commented on Aug 7, 2025 • 0 new comments

• BUG: .round causes TypeError / NaN-

  #61712 commented on Aug 8, 2025 • 0 new comments

• BUG: read_parquet converts pyarrow list type to numpy dtype

  #53011 commented on Aug 8, 2025 • 0 new comments

• DOC: Sort the pandas API reference navbar in alphabetical order

  #59164 commented on Aug 8, 2025 • 0 new comments

• DOC: Enforce Numpy Docstring Validation (Parent Issue)

  #58063 commented on Aug 9, 2025 • 0 new comments

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

  #61632 commented on Aug 9, 2025 • 0 new comments

• BUG: incorrect assumption of full-name month format when "May" is initial month

  #58328 commented on Aug 11, 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 Aug 11, 2025 • 0 new comments

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

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

• DOC: Website should copy code only

  #56388 commented on Aug 11, 2025 • 0 new comments

• DOC: `.str.cat` output in case of `Index` object

  #35556 commented on Aug 11, 2025 • 0 new comments

• [Feature Request] Add `replace` method to `Index` objects

  #19495 commented on Aug 12, 2025 • 0 new comments

• ENH adding metadata argument to DataFrame.to_parquet

  #20521 commented on Aug 12, 2025 • 0 new comments

• ENH: add `atol` to pd.DataFrame.compare()

  #54677 commented on Aug 12, 2025 • 0 new comments

• Timestamp.strftime(): missing support for nanoseconds

  #29461 commented on Aug 12, 2025 • 0 new comments