57 Pull requests merged by 36 people

• Fix #60494: query doesn't work on DataFrame integer column names

  #61207 merged Apr 1, 2025

• Bump pypa/cibuildwheel from 2.23.1 to 2.23.2

  #61205 merged Mar 31, 2025

• BUG: Fix AttributeError in pd.eval for method calls on binary operations

  #61198 merged Mar 31, 2025

• REGR: Interpolate with method=index

  #61183 merged Mar 29, 2025

• Update guidance on CFLAGS

  #61190 merged Mar 28, 2025

• BUG: Clip corr edge cases between -1.0 and 1.0

  #61154 merged Mar 25, 2025

• WEB: Remove self (Marco Gorelli) from "active maintainers" list

  #61163 merged Mar 25, 2025

• BUG: DataFrame.resample is changing the index type to MultiIndex when the dataframe is empty

  #61174 merged Mar 24, 2025

• DOC: Remove outdated comment, use DateOffset instead of BaseOffset in docs

  #61097 merged Mar 24, 2025

• DOC: Add punctuation to basics.rst in User Guide

  #61167 merged Mar 24, 2025

• WEB: Update sponsors and fix logos style

  #61121 merged Mar 24, 2025

• Fix bug in Series.describe where the median is included any time the percentiles argument is not None

  #61158 merged Mar 21, 2025

• DOC: Add missing period

  #61150 merged Mar 20, 2025

• Fix #61123 with simple doc change

  #61146 merged Mar 19, 2025

• BUG: fix read_json ignoring the dtype with the pyarrow engine

  #60997 merged Mar 19, 2025

• BUG: Fix inconsistency of converting empty categorical with dtype_backend='pyarrow'

  #61131 merged Mar 17, 2025

• Bump pypa/cibuildwheel from 2.23.0 to 2.23.1

  #61137 merged Mar 17, 2025

• DOC: Add GL08 for pandas.Timestamp.tzinfo

  #61100 merged Mar 17, 2025

• BUG: Fix bug in reindexing of period columns after unstack

  #61114 merged Mar 17, 2025

• DOC: Added docstrings to min/max/reso for Timedelta

  #61119 merged Mar 17, 2025

• BUG: .mode(dropna=False) doesn't work with nullable integers

  #61132 merged Mar 17, 2025

• DOC: Add skrub to ecosystem.md

  #61130 merged Mar 16, 2025

• ENH: Allow JIT compilation with an internal API

  #61032 merged Mar 14, 2025

• Backport PR #61098: CI/TST: Address TestArrowArray::test_reduce_series_numeric supporting skew

  #61102 merged Mar 13, 2025

• DOC: Update infer_dtype docstring

  #61111 merged Mar 13, 2025

• Enh arrow json extension

  #61103 merged Mar 12, 2025

• TST: Add test for retaining dtype of datetime columns in DataFrame.to_hdf

  #61112 merged Mar 12, 2025

• Backport PR #61085 on branch 2.3.x (DEPS: Update NumpyExtensionArray repr for NEP51)

  #61107 merged Mar 12, 2025

• DEPS: Update NumpyExtensionArray repr for NEP51

  #61085 merged Mar 12, 2025

• BUG: DataFrame.explode doesn't work for pyarrow.large_list type

  #61105 merged Mar 11, 2025

• DOC: Update warning in Index.values docstring to clarify index modification which causes segmentation fault

  #61069 merged Mar 11, 2025

• CI/TST: Address TestArrowArray::test_reduce_series_numeric supporting skew

  #61098 merged Mar 11, 2025

• DOC: Add doc for half year offsets

  #61082 merged Mar 10, 2025

• ENH: Add Rolling.nunique()

  #61087 merged Mar 10, 2025

• BUG(string dtype): Empty sum produces incorrect result

  #60936 merged Mar 10, 2025

• BUG: Fix MultiIndex from_tuples on tuples with NaNs

  #60944 merged Mar 7, 2025

• BUG: Fix OverflowError in lib.maybe_indices_to_slice()

  #61080 merged Mar 7, 2025

• BUG: Fix concat DataFrame and Series with ignore_index=True

  #60983 merged Mar 7, 2025

• BUG: Fix na_position type in IndexEngine

  #61062 merged Mar 7, 2025

• DOC: Add link description

  #61063 merged Mar 6, 2025

• DOC: Add inference type information to Dataframe Apply

  #61065 merged Mar 6, 2025

• DOC: Fix syntax highlighting in overview

  #61066 merged Mar 6, 2025

• DOC: Fix typo in Timestamp.isoformat

  #61067 merged Mar 6, 2025

• BUG: Recognize chained fsspec URLs

  #61041 merged Mar 5, 2025

• Adjust Docker File Key Value Format

  #61050 merged Mar 5, 2025

• DOC: Correct a typo in ecosystem.md

  #61059 merged Mar 5, 2025

• DOC: Updated set_index doc with a warning

  #60990 merged Mar 5, 2025

• Renamed "normalise" to "normalize"

  #61051 merged Mar 4, 2025

• DOC Fix Styler.to_latex to be in Writer column

  #61053 merged Mar 4, 2025

• Backport PR #61042: CI/TST: Fix xfail in test_columns_dtypes_not_invalid for pyarrow nightly

  #61044 merged Mar 4, 2025

• ENH: Add JupyterLite-powered shell for the website (reprise of #47428)

  #60758 merged Mar 4, 2025

• test_datetimes.py: fix literal string

  #60820 merged Mar 3, 2025

• CI/TST: Fix xfail in test_columns_dtypes_not_invalid for pyarrow nightly

  #61042 merged Mar 3, 2025

• CI: Bump GHA uses versions

  #61039 merged Mar 3, 2025

• ENH: Add HalfYear offsets

  #60946 merged Mar 3, 2025

• DOC: Correct typos in Working with text data

  #61034 merged Mar 3, 2025

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

  #61038 merged Mar 3, 2025

36 Pull requests opened by 32 people

• BUG: fix DataFrame.__setitem__ throwing a ValueError when setting a column with a 2D object array

  #61035 opened Mar 3, 2025

• perf: improve membership check performance in column filtering

  #61046 opened Mar 4, 2025

• BUG: Fix return type of loc/iloc

  #61054 opened Mar 4, 2025

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

  #61061 opened Mar 5, 2025

• BUG: PeriodIndex.to_datetime inconsistent with its docstring

  #61077 opened Mar 7, 2025

• Doc for backend-specific arguments for df.plot()

  #61078 opened Mar 7, 2025

• Bug: Fix for overflow at edge cases in `normalize()` by raising exception

  #61083 opened Mar 8, 2025

• BUG: Improve ImportError message to suggest importing dependencies directly for full error details

  #61084 opened Mar 8, 2025

• BUG: Passing original properties of `DataFrame` and `Series` subclasses to their constructors

  #61101 opened Mar 11, 2025

• DOC: iss-59698-pandas-Timedelta-to_numpy-PR01

  #61104 opened Mar 11, 2025

• DOC: fix docstring validation errors for pandas.util.hash_pandas_object and pandas.Timestamp.resolution

  #61106 opened Mar 11, 2025

• DOC: Updated link for OVH server benchmark visualization

  #61108 opened Mar 12, 2025

• Bug: Save original index and remap after function completes

  #61116 opened Mar 13, 2025

• BUG/TST/DEPR: Ensure dtype="category" always implies ordered=False & add tests

  #61118 opened Mar 13, 2025

• API (string dtype): implement hierarchy (NA > NaN, pyarrow > python) for consistent comparisons between different string dtypes

  #61138 opened Mar 17, 2025

• BUG: Collision between equivalent frequencies 'QS-…

  #61142 opened Mar 18, 2025

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

  #61143 opened Mar 18, 2025

• String dtype: more informative repr (keeping brief __str__)

  #61148 opened Mar 19, 2025

• BUG: Added deprecation warning to Timestamp constructor

  #61149 opened Mar 20, 2025

• ENH: Added dict support for `pd.set_option`

  #61151 opened Mar 20, 2025

• ENH: Adds `dict` & `**dict` support for `pd.set_option` [#61093]

  #61152 opened Mar 20, 2025

• Preserve Complex Data Types for to_csv

  #61157 opened Mar 20, 2025

• ENH: Support boolean masks for `iloc.__getitem__`

  #61162 opened Mar 21, 2025

• ENH: Accept no fields for groupby by

  #61168 opened Mar 23, 2025

• DataFrame.dtypes.to_json OverflowError: Maximum recursion level reached

  #61171 opened Mar 23, 2025

• BUG: Handle line and bar on the same plot

  #61173 opened Mar 24, 2025

• update offsets.pyx to fix #60647

  #61181 opened Mar 26, 2025

• Doc pivot table

  #61184 opened Mar 26, 2025

• ENH: Reimplement DataFrame.lookup

  #61185 opened Mar 26, 2025

• BUG: Fix pyarrow categoricals not working for pivot and categoricals

  #61193 opened Mar 28, 2025

• DOC: User Guide Page on user-defined functions

  #61195 opened Mar 28, 2025

• BUG: fix to_json on period

  #61203 opened Mar 30, 2025

• BUG: Preserve extension dtypes in MultiIndex during concat (#58421)

  #61211 opened Apr 1, 2025

• BUG: OverflowError when fillna on DataFrame with a pd.Timestamp (#61208)

  #61212 opened Apr 2, 2025

• Restrict clipping of DataFrame.corr only when cov=False

  #61214 opened Apr 2, 2025

• DOC: Fix ES01 for pandas.api.extensions.ExtensionDtype

  #61215 opened Apr 2, 2025

67 Issues closed by 14 people

• BUG: DataFrame.corr clips values when cov=True

  #61213 closed Apr 2, 2025

• BUG: df.query("`1` == 0.1") failed with UndefinedVariableError: name 'BACKTICK_QUOTED_STRING_1' is not defined

  #60494 closed Apr 1, 2025

• BUG: pd.HDFStore(file, mode='a') increases file size unnecessarily when file exists and dataframe contains string-based columns

  #60823 closed Mar 31, 2025

• BUG: AttributeError on method call after binary operation in eval expression

  #61175 closed Mar 31, 2025

• BUG: DataFrame.min raises TypeError when column contains mixed types (e.g., np.nan and datetime)

  #61187 closed Mar 31, 2025

• Series dtype changes when a new row is added

  #21501 closed Mar 30, 2025

• BUG: ``Series.interpolate`` regression in latest Pandas 3.0.0 nightly (method 'linear' behaves like 'index')

  #61122 closed Mar 29, 2025

• BUG: `to_datetime()` warns unnecessarily that format cannot be inferred

  #61196 closed Mar 29, 2025

• BUG: \0 null bytes in `str` not preserved in `pandas.CategoricalIndex` or `pandas.MultiIndex`

  #61189 closed Mar 28, 2025

• BUG: Series.unique() terminates strings prematurely on null Bytes

  #53720 closed Mar 28, 2025

• STYLE check pandas doesn't use external package when that package is vendored

  #47964 closed Mar 27, 2025

• BUG: Sorting fails in specific cases with pandas==2.1.1

  #61068 closed Mar 27, 2025

• BUG: replace with np.nan unexpectedly converts pd.Timestamp to pd.NaT

  #61179 closed Mar 26, 2025

• BUG: import pandas 2.2.3 on WSL 2.4.12.0 raises broken support for `numpy.longdouble` dtype warning

  #61153 closed Mar 26, 2025

• BUG: .corr() values significantly higher than 1

  #61120 closed Mar 25, 2025

• BUG: When upsampling an empty dataframe, the index type changes from DatetimeIndex to MultiIndex

  #55572 closed Mar 24, 2025

• DOC: should `DateOffset` always be used instead of `BaseOffset`?

  #60886 closed Mar 24, 2025

• ENH: add destructor to HDFStore

  #61169 closed Mar 24, 2025

• DataFrame.describe(percentiles=[]) still returns 50% percentile.

  #11866 closed Mar 24, 2025

• ENH: add as_index to value_counts and pivot_table

  #49069 closed Mar 24, 2025

• BUG: Faulty DatetimeIndex union

  #61159 closed Mar 22, 2025

• BUG: `datetime64[s]` fails round trip using `.to_parquet` and `read_parquet`

  #61165 closed Mar 22, 2025

• ENH: Passing a single value to `.describe(percentiles = [0.25])` returns 25th- and 50th-percentile

  #60550 closed Mar 21, 2025

• Update plot docs when backend is set.

  #28618 closed Mar 20, 2025

• DOC: `read_excel` `nrows` parameter reads extra rows when tables are adjacent (no blank row)

  #61123 closed Mar 19, 2025

• BUG: read_json silently ignores the dtype when engine=pyarrow

  #59516 closed Mar 19, 2025

• DOC: Clarification on Python 3.13 support

  #61139 closed Mar 19, 2025

• BUG: astype transforms NA to "NA"

  #61141 closed Mar 19, 2025

• BUG: Trying to use convert_dtypes with dtype_backend='pyarrow' specified on empty categorical series results in error or null[pyarrow] dtype

  #59934 closed Mar 17, 2025

• BUG: period[h] + column splicing is not work

  #60273 closed Mar 17, 2025

• BUG: invalid result of reindex on columns after unstack with Period data

  #60980 closed Mar 17, 2025

• DOC: fix docstring validation errors for pandas.Timedelta/pandas.TimedeltaIndex

  #59698 closed Mar 17, 2025

• BUG: .mode(dropna=False) doesn't work with nullable integers

  #58926 closed Mar 17, 2025

• ENH: Adding some common functionalities

  #61133 closed Mar 17, 2025

• Issue Title Here

  #61136 closed Mar 17, 2025

• Issue Title Here

  #61135 closed Mar 17, 2025

• ENH: Add support for executing UDF's using Bodo as the engine

  #60668 closed Mar 14, 2025

• STYLE replace flake8-rst with something maintained

  #46865 closed Mar 14, 2025

• BUG: pd.api.types.infer_dtype on scalar input

  #61081 closed Mar 13, 2025

• ENH: Support `pa.json_` in arrow extension type

  #60958 closed Mar 12, 2025

• BUG: dataframe.to_hdf function incompatible with timestamps of format "datetime64[us, UTC]"

  #60353 closed Mar 12, 2025

• BUG: DataFrame.explode doesn't explode when using pyarrow large list type

  #61091 closed Mar 11, 2025

• BUG: Segmentation Fault when changing a column name in a DataFrame

  #60954 closed Mar 11, 2025

• ENH: provide nunique method on Rolling object

  #26958 closed Mar 10, 2025

• BUG/API: sum of a string column with all-NaN or empty

  #60229 closed Mar 10, 2025

• BUG: The Series `.map()` function frequently fails when using dictionaries with tuple keys in various cases.

  #60988 closed Mar 7, 2025

• BUG: Series constructor from dictionary drops key (index) levels when not all keys have same number of entries

  #60695 closed Mar 7, 2025

• BUG: sometimes when using ~ and & operators for indexing it evaluated incorrectly

  #61052 closed Mar 7, 2025

• BUG: Printing float16 with NumPy>=2.0 gives overflow warning

  #61029 closed Mar 7, 2025

• BUG: OverflowError: value too large to convert to int when manipulating very large dataframes

  #59531 closed Mar 7, 2025

• BUG: Potentially incorrect result of `df.rolling(window=...).mean()`

  #61071 closed Mar 7, 2025

• BUG: `pd.concat` on axis "index" has unexpected result concatenating Series and DataFrame with same (column) name

  #56257 closed Mar 7, 2025

• BUG: Concatenating dataframe and series with `ignore_index = True` drops the series name

  #60723 closed Mar 7, 2025

• BUG: Index containing NA behaves absolutely unpredictably when length exceeds 128

  #58924 closed Mar 7, 2025

• DOC: Outdated example of DataFrame.mean

  #61070 closed Mar 6, 2025

• BUG: Chained urls (allowed by fsspec) not recognized by is_fsspec_url

  #48978 closed Mar 5, 2025

• ENH: json_normalize should work with JSON

  #61006 closed Mar 5, 2025

• Correction: Adjust Dockerfile key value format

  #61036 closed Mar 5, 2025

• DOC: No warning in set_index() that previous index column is removed.

  #60973 closed Mar 5, 2025

• BUG: invalid result of reindex on columns after unstack with Period data #60980

  #61055 closed Mar 5, 2025

• BUG: Ghost Column Generation Bug in .loc[] with Series Column Selector (Pandas 2.2.2)

  #61049 closed Mar 4, 2025

• Correction: Standardize spelling of "normalize" in codebase

  #61047 closed Mar 4, 2025

• DOC: Reinstate the JupyterLite-based live shell for the pandas website

  #60747 closed Mar 4, 2025

• BUG: Cannot cast float to int using map function

  #61016 closed Mar 3, 2025

• BUG: `.str.replace()` with capture groups does not play nice with string methods

  #61043 closed Mar 3, 2025

• Add "semester" as a time/date component to DatetimeIndex

  #22362 closed Mar 3, 2025

• ENH: Control resampling at halfyear with origin

  #60928 closed Mar 3, 2025

46 Issues opened by 39 people

• ENH: Add ignore_empty and ignore_all_na arguments to pd.concat

  #61210 opened Apr 1, 2025

• ENH: Consistent NA handling in `unique()`, and `nunique()`

  #61209 opened Mar 31, 2025

• BUG: OverflowError when fillna on DataFrame with a pd.Timestamp

  #61208 opened Mar 31, 2025

• BUG: round on object columns no longer raises a TypeError

  #61206 opened Mar 31, 2025

• BUG: DataFrame.min with skipna=True raises TypeError when column contains np.nan and datetime.date

  #61204 opened Mar 31, 2025

• ENH: adding a filter (and bold) to header when writing to excel

  #61194 opened Mar 28, 2025

• BUG: Boolean selection edge case.

  #61191 opened Mar 27, 2025

• BUG: date comparison fails when series is all pd.NaT values

  #61188 opened Mar 27, 2025

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

  #61186 opened Mar 27, 2025

• BUG: Negation of `.str.isnumeric()` changes `dtype` when `pd.NA` is present

  #61182 opened Mar 26, 2025

• BUG: Performance issue with fillna() after merging DataFrames

  #61180 opened Mar 26, 2025

• BUG: Inconsistency when converting week PeriodIndex into DatetimeIndex with astype("datetime64[ns]")

  #61177 opened Mar 25, 2025

• BUG: pd.read_csv() on empty files should give an empty dataframe pd.DataFrame()

  #61172 opened Mar 24, 2025

• BUG: DataFrame.dtypes.to_json OverflowError: Maximum recursion level reached

  #61170 opened Mar 23, 2025

• ENH: Enable nsmallest/nlargest on object dtype

  #61166 opened Mar 22, 2025

• ENH: merge_asof threshold minimum

  #61164 opened Mar 21, 2025

• BUG: fails to plot 2 plots with secondary y axis when index type is PeriodIndex and plot kinds are different

  #61161 opened Mar 21, 2025

• ENH: Accept no fields for groupby by

  #61160 opened Mar 21, 2025

• BUILD: Cython.Compiler.Errors: 'free_threading_config.pxi' not found

  #61156 opened Mar 20, 2025

• BUG: Impossible creation of array with dtype=string

  #61155 opened Mar 20, 2025

• BUG: Inconsistent index type when using read_csv with string[pyarrow] dtype

  #61145 opened Mar 19, 2025

• BUG(?): rolling sum with pyarrow types results in float64 instead of preserving integer type

  #61144 opened Mar 18, 2025

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

  #61140 opened Mar 17, 2025

• Improve the apply/map APIs

  #61128 opened Mar 15, 2025

• DOC: Write user guide page on apply/map/transform methods

  #61126 opened Mar 15, 2025

• ENH: Supporting third-party engines for all `map` and `apply` methods

  #61125 opened Mar 15, 2025

• ENH: fillna enhancement with method='nearest'

  #61124 opened Mar 15, 2025

• BUG: `pivot_table` drops rows and columns despite values being non-`NaN`

  #61113 opened Mar 12, 2025

• ENH: Automate reading of data in chunks

  #61110 opened Mar 12, 2025

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

  #61099 opened Mar 10, 2025

• ENH: `DatetimeIndex.set_freq()`

  #61094 opened Mar 10, 2025

• ENH: Support dict to `pd.set_option` for cleaner code

  #61093 opened Mar 10, 2025

• BUG: Collision between equivalent frequencies 'QS-FEB' and 'QS-NOV'

  #61086 opened Mar 8, 2025

• BUILD: installation using wheels fails when using nix + uv2nix

  #61079 opened Mar 7, 2025

• PERF: why nlargest is so slower?

  #61076 opened Mar 7, 2025

• ENH: use the option framework to opt-out of auto-alignment

  #61075 opened Mar 7, 2025

• DEPR: Make `dtype="category"` always imply ordered=False

  #61074 opened Mar 7, 2025

• BUG: str.fullmatch behavior is not the same for object dtype and string[pyarrow] dtype

  #61072 opened Mar 7, 2025

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

  #61060 opened Mar 5, 2025

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

  #61058 opened Mar 5, 2025

• BUG: Inconsistent behaviour of apply with result_type='expand' for functions that can return NaN type values

  #61057 opened Mar 4, 2025

• PERF: Optimize membership check in column filtering for better performance

  #61045 opened Mar 4, 2025

• Metadata generation failed when installing PyQt5

  #61037 opened Mar 3, 2025

• ENH: Add `coalesce_keys` option to join

  #61033 opened Mar 3, 2025

• BUG: `ValueError: ndarray is not C-contiguous` for `cummax` on nullable dtypes

  #61031 opened Mar 2, 2025

• BUG: Dependency check custom error loses information

  #61030 opened Mar 2, 2025

99 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.

• MNT: Bump dev pin on NumPy

  #60987 commented on Mar 31, 2025 • 22 new comments

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

  #60772 commented on Mar 29, 2025 • 16 new comments

• Fix binary operations on attrs for Series and DataFrame

  #59636 commented on Apr 2, 2025 • 13 new comments

• BUG(string dtype): groupby/resampler.min/max returns float on all NA strings

  #60985 commented on Mar 31, 2025 • 6 new comments

• Bug cov nat

  #60898 commented on Mar 26, 2025 • 5 new comments

• DEPS: Bump optional dependencies

  #60655 commented on Mar 25, 2025 • 5 new comments

• BUG: fix PeriodIndex.difference producing incorrect results

  #60992 commented on Mar 4, 2025 • 3 new comments

• BUG: groupby.agg with UDF changing pyarrow dtypes

  #59601 commented on Mar 23, 2025 • 1 new comment

• TST: mixed_int_string Index

  #54072 commented on Mar 23, 2025 • 0 new comments

• BUG: Inconsistent dtype with GroupBy for StrDtype and all missing values

  #60810 commented on Mar 23, 2025 • 0 new comments

• API: creating DataFrame with no columns: object vs string dtype columns?

  #60338 commented on Mar 23, 2025 • 0 new comments

• BUG: pd.merge has unexpected behaviour when joining on index / column

  #57291 commented on Mar 24, 2025 • 0 new comments

• BUG: Timestamp.fromisoformat drops ISO 8601 timezone information

  #56398 commented on Mar 24, 2025 • 0 new comments

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

  #34681 commented on Mar 24, 2025 • 0 new comments

• ENH: ArrowTemporalProperties' object has no attribute 'to_period'

  #59771 commented on Mar 25, 2025 • 0 new comments

• BUG: `ValueError: Length of values (5) does not match length of index (4)` when subtracting two series with MultIndex and Index and nan values

  #60908 commented on Mar 25, 2025 • 0 new comments

• BUG: `.map` & `.apply` would convert element type for extension array.

  #60766 commented on Mar 26, 2025 • 0 new comments

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

  #32307 commented on Mar 26, 2025 • 0 new comments

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

  #59221 commented on Mar 26, 2025 • 0 new comments

• DOC: document optional arguments on plot submethods

  #11042 commented on Mar 23, 2025 • 0 new comments

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

  #22836 commented on Mar 23, 2025 • 0 new comments

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

  #54466 commented on Mar 23, 2025 • 0 new comments

• BUG: Creating Index name using `names` names argument, doesn't set index name

  #19082 commented on Mar 22, 2025 • 0 new comments

• DEPR: Some dropna behaviors in DataFrame.pivot_table

  #53521 commented on Mar 22, 2025 • 0 new comments

• BUG: .to_json() of periode_range gives OverflowError: Maximum recursion level reached

  #55490 commented on Mar 21, 2025 • 0 new comments

• ENH: Need API support and __repr__ to discover the storage used for strings

  #59342 commented on Mar 20, 2025 • 0 new comments

• Memory leakage when concatting list of dataframes

  #20849 commented on Mar 20, 2025 • 0 new comments

• TST: read_csv silently drops empty row

  #21995 commented on Mar 19, 2025 • 0 new comments

• Option to Raise Exception on Unmapped Value in Series.map

  #14210 commented on Mar 7, 2025 • 0 new comments

• ENH(string dtype): fallback for HDF5 with UTF-8 surrogates

  #60993 commented on Mar 26, 2025 • 0 new comments

• DEPS: Revert SQLAlchemy minimum version back to 1.4.36

  #60977 commented on Mar 11, 2025 • 0 new comments

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

  #60948 commented on Mar 21, 2025 • 0 new comments

• My feature branch to issue #19129 (read_json and orient='table' With Numeric Column)

  #60945 commented on Mar 31, 2025 • 0 new comments

• BUG: Fixed assign failure when with Copy-on-Write

  #60941 commented on Apr 2, 2025 • 0 new comments

• expand on different Getitem uses

  #60806 commented on Mar 3, 2025 • 0 new comments

• TST(string dtype): Resolve xfails in test_from_dummies

  #60694 commented on Mar 24, 2025 • 0 new comments

• Relax meson pins in CI and Fix Missed Warnings

  #60681 commented on Mar 24, 2025 • 0 new comments

• ENH: Allow `s.map(d, na_action='raise')`

  #60482 commented on Mar 8, 2025 • 0 new comments

• BUG: `groupby` then `resample` on column gives incorrect results if the index is out of order

  #59408 commented on Mar 31, 2025 • 0 new comments

• BUG: timedeltas.pyx.c varies between builds

  #60078 commented on Apr 1, 2025 • 0 new comments

• BUG: `iloc` with `Series` as indexer fails for `__getitem__` but works with `__setitem__`

  #60994 commented on Mar 31, 2025 • 0 new comments

• BUG: Timedelta created by to_timedelta does not add correctly to datetime in Pandas 2

  #53643 commented on Mar 31, 2025 • 0 new comments

• BUG: Parquet roundtrip fails with numerical categorical dtype

  #60491 commented on Mar 29, 2025 • 0 new comments

• BUG: TypeError: Cannot convert numpy.ndarray to numpy.ndarray

  #60184 commented on Mar 29, 2025 • 0 new comments

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

  #60895 commented on Mar 28, 2025 • 0 new comments

• Move interchange protocol implementation into a separate project

  #56732 commented on Mar 27, 2025 • 0 new comments

• BUG: duplicated() on a empty DataFrame or a DataFrame with an empty subset of columns with a non-empty index

  #12869 commented on Mar 27, 2025 • 0 new comments

• ENH: re-implement DataFrame.lookup.

  #40140 commented on Mar 27, 2025 • 0 new comments

• BUG: Datatypes not preserved on pd.read_excel

  #60088 commented on Mar 27, 2025 • 0 new comments

• BUG: args offset in Timestamp.__new__ causes bugs

  #52343 commented on Mar 26, 2025 • 0 new comments

• BUG: unexpected behavior when Loading lines like "\""\t"a"

  #59222 commented on Mar 7, 2025 • 0 new comments

• ENH: Skip costly `is_unique` call while creating `Categorical` arrays

  #60981 commented on Mar 7, 2025 • 0 new comments

• PERF: cut with IntervalIndex slower than cut with array of bin edges for large arrays

  #47614 commented on Mar 7, 2025 • 0 new comments

• BUG: Some string methods treat "." as regex, others don't

  #37963 commented on Mar 6, 2025 • 0 new comments

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

  #60923 commented on Mar 6, 2025 • 0 new comments

• BUG: need to block split when filling na

  #14407 commented on Mar 6, 2025 • 0 new comments

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

  #48781 commented on Mar 6, 2025 • 0 new comments

• BUG: pd.concat doesn't preserve categorical dtypes

  #51362 commented on Mar 5, 2025 • 0 new comments

• BUG: why arrow only work on mac arm？

  #60714 commented on Mar 5, 2025 • 0 new comments

• read_sql should convert Numeric to decimals

  #20525 commented on Mar 5, 2025 • 0 new comments

• BUG: Index[timestamp[pyarrow]].union with itself return object type

  #58421 commented on Mar 5, 2025 • 0 new comments

• ENH: Support for Python 3.13.2 free-threading version

  #60972 commented on Mar 5, 2025 • 0 new comments

• Add support for "regex" library

  #22496 commented on Mar 4, 2025 • 0 new comments

• BUILD: Trouble installing pandas on Windows

  #60947 commented on Mar 4, 2025 • 0 new comments

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

  #60897 commented on Mar 4, 2025 • 0 new comments

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

  #60600 commented on Mar 3, 2025 • 0 new comments

• BUG: setting column with 2D object array raises

  #61026 commented on Mar 3, 2025 • 0 new comments

• BUG: scatter and line matplotlib plots not compatible for sharex=True datetime plots

  #61005 commented on Mar 2, 2025 • 0 new comments

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

  #60149 commented on Mar 2, 2025 • 0 new comments

• DOC: df.plot() is missing color parameter on documentation

  #61020 commented on Mar 2, 2025 • 0 new comments

• BUG: import has error

  #59527 commented on Mar 2, 2025 • 0 new comments

• BUG: df.plot() "Subplots" changes behavior of how values are stacked using the "Stacked" property

  #61018 commented on Mar 2, 2025 • 0 new comments

• BUG: df.plot() multi-column subplots & title interaction

  #61019 commented on Mar 2, 2025 • 0 new comments

• BUG: Arugment nan_as_null is unused in __dataframe__ calls.

  #61025 commented on Mar 2, 2025 • 0 new comments

• BUG: Series.plot.hist segfault for timedelta64

  #43941 commented on Mar 19, 2025 • 0 new comments

• BUG: queries on categorical string columns in HDFStore.select() return unexpected results

  #57608 commented on Mar 19, 2025 • 0 new comments

• BUG: CustomBusinessDay not respecting calendar

  #60647 commented on Mar 19, 2025 • 0 new comments

• API (string dtype): comparisons between different string classes

  #60639 commented on Mar 19, 2025 • 0 new comments

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

  #55305 commented on Mar 18, 2025 • 0 new comments

• BUG: parquet serialization/deserialization adds all dict keys into column

  #56842 commented on Mar 18, 2025 • 0 new comments

• DOC: fix docstring validation errors for `pandas.Timestamp`

  #59458 commented on Mar 17, 2025 • 0 new comments

• PERF: Surprisingly slow nlargest with duplicates in the index

  #55767 commented on Mar 14, 2025 • 0 new comments

• DOC: Specify what "non-null" means in DataFrame.info()

  #60802 commented on Mar 14, 2025 • 0 new comments

• DOC: Missing documentation for pandas styler properties

  #60872 commented on Mar 13, 2025 • 0 new comments

• BUG: crosstab(aggfunc='skew') raises IndexError: single positional indexer is out-of-bounds

  #60768 commented on Mar 13, 2025 • 0 new comments

• TST: mutation testing results (possible tests to add)

  #58517 commented on Mar 12, 2025 • 0 new comments

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

  #60833 commented on Mar 12, 2025 • 0 new comments

• BUG: `DataFrame.to_parquet` doesn't round-trip pyarrow StringDtype

  #42664 commented on Mar 12, 2025 • 0 new comments

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

  #60966 commented on Mar 11, 2025 • 0 new comments

• DOC: Conbench PoC benchmark is down

  #60915 commented on Mar 10, 2025 • 0 new comments

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

  #54792 commented on Mar 10, 2025 • 0 new comments

• ENH: Give DataFrame.to_sql() the option to create temporary tables.

  #41335 commented on Mar 10, 2025 • 0 new comments

• BUG: read_sas(..) interprets some zeros as 5.397605e-79

  #50670 commented on Mar 10, 2025 • 0 new comments

• merge_asof fails to coerce float types

  #21559 commented on Mar 10, 2025 • 0 new comments

• ENH: Add a ratio() Method for Series and dataframes. Alternatively, consider removing similar methods at this functionality level (e.g. diff() and pct_change())

  #60801 commented on Mar 9, 2025 • 0 new comments

• BUG: `Timestamp.normalize()` can overflow silently

  #60583 commented on Mar 8, 2025 • 0 new comments

• DOC: Enforce Numpy Docstring Validation | pandas.Timestamp

  #58505 commented on Mar 7, 2025 • 0 new comments

• BUG: Convertion fails for columns with datetime64[ms]

  #57738 commented on Mar 7, 2025 • 0 new comments

• BUG: tz-aware series with NaT raises exception on .to_numpy("datetime64")

  #59772 commented on Mar 7, 2025 • 0 new comments