13 Pull requests merged by 4 people

• BUG: If both index and axis are passed to DataFrame.drop, raise a clear error

  #61855 merged Jul 18, 2025

• API: IncompatibleFrequency subclass TypeError

  #61875 merged Jul 18, 2025

• BUG: disallow exotic np.datetime64 unit

  #61882 merged Jul 17, 2025

• DOC: fix doctests for string dtype changes (top-level)

  #61887 merged Jul 17, 2025

• DOC: make doc build run with string dtype enabled

  #61864 merged Jul 17, 2025

• API: Index.__cmp__(Series) return NotImplemented

  #61884 merged Jul 16, 2025

• BUG: Timedelta with invalid keyword

  #61883 merged Jul 16, 2025

• ERR: improve exception message from timedelta64-datetime64

  #61876 merged Jul 16, 2025

• DOC: update Parquet IO user guide on index handling and type support across engines

  #61878 merged Jul 16, 2025

• DOC: show Parquet examples with default engine (without explicit pyarrow/fastparquet engine keyword)

  #61877 merged Jul 16, 2025

• String dtype: turn on by default

  #61722 merged Jul 16, 2025

• DOC: Add Raises section to to_numeric docstring

  #61868 merged Jul 16, 2025

• API: np.isinf on Index return Index[bool]

  #61874 merged Jul 16, 2025

12 Pull requests opened by 9 people

• BUG: Fix inconsistency with DateOffset near DST

  #61870 opened Jul 16, 2025

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

  #61871 opened Jul 16, 2025

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

  #61879 opened Jul 16, 2025

• Set up ty in CI

  #61880 opened Jul 16, 2025

• Output formatting: preserve quoting for string categories

  #61891 opened Jul 17, 2025

• WEB: Remove Extensibility section from Roadmap

  #61892 opened Jul 17, 2025

• BUG: Fix concat dtype preservation through concat

  #61893 opened Jul 17, 2025

• BUG: fix padding for string categories in CategoricalIndex repr

  #61894 opened Jul 17, 2025

• DEPR: PeriodDtype.freq

  #61897 opened Jul 18, 2025

• FIX: Correct clip behavior test for lower > upper case

  #61899 opened Jul 18, 2025

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

  #61900 opened Jul 18, 2025

• DEPR: maybe_infer_ndim

  #61901 opened Jul 18, 2025

20 Issues closed by 6 people

• BUG: `AttributeError` in `pd.eval()` when calling attribute after binary operation

  #61898 closed Jul 18, 2025

• high-freq properties of low-freq Periods

  #18378 closed Jul 18, 2025

• BUG: drop doesn't recognise MultiIndexes

  #61823 closed Jul 18, 2025

• API: IncompatibleFrequency should subclass TypeError

  #55782 closed Jul 18, 2025

• Timestamp incorrectly handles datetime64 with exotic units

  #25611 closed Jul 17, 2025

• VOTE: Voting issue for PDEP-8: Inplace methods in pandas

  #56507 closed Jul 17, 2025

• DISC: Consider not requiring PyArrow in 3.0

  #57073 closed Jul 17, 2025

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

  #61596 closed Jul 17, 2025

• API: Have invalid_comparison return pandas object following `__pandas_priority__`?

  #54475 closed Jul 16, 2025

• DEPR: Index == Series should return NotImplemented

  #36759 closed Jul 16, 2025

• ENH: pd.Timedelta could issue warning when 'units' falls through to **kwargs

  #53801 closed Jul 16, 2025

• BUG: provide better error message for pd.Timedelta - pd.Series[Timestamp]

  #59571 closed Jul 16, 2025

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

  #61811 closed Jul 16, 2025

• API: Index.__array_wrap__ stop special-casing bool dtype

  #52676 closed Jul 16, 2025

• REF: share code between pd.array and Series constructor

  #27460 closed Jul 16, 2025

• DISC: remove Index and EA subclasses

  #43002 closed Jul 16, 2025

• DEPR: __finalize__ and _metadata

  #51280 closed Jul 16, 2025

• API/DEPR: dtype=(str|bytes) interpret as pyarrow

  #52429 closed Jul 16, 2025

• API/DEPR: pd.array don't cast numpy int/float/bool arrays to nullable

  #53695 closed Jul 16, 2025

• DEPR: Period, PeriodFoo

  #54235 closed Jul 16, 2025

7 Issues opened by 5 people

• BUG: `rank` gives incorrect outputs on Windows with PyArrow backend

  #61896 opened Jul 18, 2025

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

  #61890 opened Jul 17, 2025

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

  #61889 opened Jul 17, 2025

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

  #61888 opened Jul 17, 2025

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

  #61886 opened Jul 17, 2025

• API: boolean ops with float dtype

  #61881 opened Jul 16, 2025

• BUG:float_precision type hints differ in release version from github and docs pandas==2.3.1

  #61873 opened Jul 16, 2025

71 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.

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

  #61760 commented on Jul 18, 2025 • 3 new comments

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

  #61659 commented on Jul 17, 2025 • 3 new comments

• [READY] perf improvements for strftime

  #51298 commented on Jul 17, 2025 • 3 new comments

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

  #61764 commented on Jul 16, 2025 • 2 new comments

• Doc simplify footer

  #61859 commented on Jul 17, 2025 • 1 new comment

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

  #61820 commented on Jul 17, 2025 • 1 new comment

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

  #61804 commented on Jul 17, 2025 • 1 new comment

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

  #61681 commented on Jul 18, 2025 • 0 new comments

• DIS: Keywords for multi-threading capabilities

  #43313 commented on Jul 18, 2025 • 0 new comments

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

  #57745 commented on Jul 18, 2025 • 0 new comments

• DEPR: Deprecate xlrd and pyxlsb excel engines

  #56542 commented on Jul 18, 2025 • 0 new comments

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

  #61837 commented on Jul 18, 2025 • 0 new comments

• BUG: tz_localize(None) with Arrow timestamp

  #61780 commented on Jul 18, 2025 • 0 new comments

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

  #19082 commented on Jul 17, 2025 • 0 new comments

• BUG: some cases of binary arithmetic between string and timedelta raise TypeError

  #59653 commented on Jul 17, 2025 • 0 new comments

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

  #60234 commented on Jul 17, 2025 • 0 new comments

• BUG: DateOffset default temporal pattern does not work as expected with DST

  #61862 commented on Jul 17, 2025 • 0 new comments

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

  #54466 commented on Jul 17, 2025 • 0 new comments

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

  #61687 commented on Jul 17, 2025 • 0 new comments

• QST: Pandas describe() methods(with float16 and float32) are different

  #41277 commented on Jul 17, 2025 • 0 new comments

• Using python comparison operators when SparseArrays of uneven length raises uninformative error

  #32119 commented on Jul 17, 2025 • 0 new comments

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

  #61382 commented on Jul 16, 2025 • 0 new comments

• ENH: Support f-string formatting for Period objects

  #48536 commented on Jul 18, 2025 • 0 new comments

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

  #60159 commented on Jul 18, 2025 • 0 new comments

• Give the merge copy parameter better documentation

  #4599 commented on Jul 18, 2025 • 0 new comments

• DEPR: restrict downstream usage of core.internals

  #40226 commented on Jul 18, 2025 • 0 new comments

• Incorrect rolling std() results on very large DataFrames

  #61677 commented on Jul 18, 2025 • 0 new comments

• BUG: replace value failed

  #61643 commented on Jul 18, 2025 • 0 new comments

• ENH: access sliced dataframe from rolling.cov

  #61401 commented on Jul 18, 2025 • 0 new comments

• PDEP-8: Inplace methods in pandas

  #51466 commented on Jul 17, 2025 • 0 new comments

• PDEP-15: Reject PDEP-10

  #58623 commented on Jul 17, 2025 • 0 new comments

• [WIP] ENH: support reading directory in read_csv

  #61275 commented on Jul 16, 2025 • 0 new comments

• ENH: Implement translations infrastructure

  #61380 commented on Jul 18, 2025 • 0 new comments

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

  #61533 commented on Jul 17, 2025 • 0 new comments

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

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

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

  #61833 commented on Jul 17, 2025 • 0 new comments

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

  #61866 commented on Jul 16, 2025 • 0 new comments

• ENH: Add a function like PYQT signal

  #61829 commented on Jul 16, 2025 • 0 new comments

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

  #61860 commented on Jul 16, 2025 • 0 new comments

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

  #10720 commented on Jul 16, 2025 • 0 new comments

• Thousands separator for to_csv

  #30045 commented on Jul 16, 2025 • 0 new comments

• Deprecate accepting None in pd.concat

  #57846 commented on Jul 16, 2025 • 0 new comments

• BUG: Dataframe's `to_sql` method fails while trying to persist Dataframe to Postgtres in Version 2.2.0

  #57196 commented on Jul 16, 2025 • 0 new comments

• BUG: describe(include=..) fails with unrelated error if provided data types are not present

  #61863 commented on Jul 16, 2025 • 0 new comments

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

  #61838 commented on Jul 16, 2025 • 0 new comments

• BUG: datetime parsing: error message indicating position of conflicting string is wrong for larger data

  #55345 commented on Jul 16, 2025 • 0 new comments

• BUG: next_workday observance wrongly adds BDay to holidays on weekdays

  #58553 commented on Jul 16, 2025 • 0 new comments

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

  #58582 commented on Jul 16, 2025 • 0 new comments

• BUG: AttributeError about dateutil.relativedelta when calling pd.read_json(json_data)

  #59227 commented on Jul 16, 2025 • 0 new comments

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

  #61667 commented on Jul 16, 2025 • 0 new comments

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

  #61758 commented on Jul 16, 2025 • 0 new comments

• API: Categorical constructor with dtype raise instead of casting to NA

  #40996 commented on Jul 16, 2025 • 0 new comments

• BUG: pd.Grouper cannot be reused in some cases

  #41930 commented on Jul 16, 2025 • 0 new comments

• Deprecate fill_value argument for df.add

  #32608 commented on Jul 17, 2025 • 0 new comments

• BUG: Incorrect behavior of binary operations when left/right operands have different type (Series/DataFrame)

  #37663 commented on Jul 17, 2025 • 0 new comments

• cannot get cut() to display desired bins label

  #15357 commented on Jul 17, 2025 • 0 new comments

• BUG: in describe() result, mean is to NaN or Inf, when change float64 to float32 or float16

  #48757 commented on Jul 17, 2025 • 0 new comments

• BUG: In master, math with periodindex + index of offset produces wrong result

  #50162 commented on Jul 17, 2025 • 0 new comments

• DOC: Extra float values appear after resampling in column used by groupby

  #50893 commented on Jul 17, 2025 • 0 new comments

• Add parameter of bias or ddof to DataFrame.skew()

  #54556 commented on Jul 17, 2025 • 0 new comments

• BUG: Inconsistent data types of `Series.min()` return values by python interpreters

  #55566 commented on Jul 17, 2025 • 0 new comments

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

  #53643 commented on Jul 17, 2025 • 0 new comments

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

  #61641 commented on Jul 17, 2025 • 0 new comments

• ENH: Add decimal parameter to to_numeric

  #4674 commented on Jul 17, 2025 • 0 new comments

• ENH: cumcount() for DataFrames and Series

  #12648 commented on Jul 17, 2025 • 0 new comments

• API: Breaking Changes in 3.0 (without deprecations)

  #44823 commented on Jul 17, 2025 • 0 new comments

• BUG: `Series.interpolate` does not interpolate `pd.NA`

  #54400 commented on Jul 17, 2025 • 0 new comments

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

  #61700 commented on Jul 17, 2025 • 0 new comments

• ENH: .ewm add min() max() and count()

  #51706 commented on Jul 16, 2025 • 0 new comments

• ERR: Remove __invert__ operations on dtype=object?

  #16873 commented on Jul 16, 2025 • 0 new comments

• BUG: Rolling variance is negative

  #52407 commented on Jul 16, 2025 • 0 new comments