16 Pull requests merged by 7 people

• BUG: to_datetime(None) inconsistent with other conversions

  #62249 merged Sep 3, 2025

• BUG: timedelta64 * bool failing to raise

  #62248 merged Sep 3, 2025

• BUG: divmod with bool dtype failing to raise

  #62247 merged Sep 3, 2025

• BUG: divmod with pd.NA

  #62246 merged Sep 3, 2025

• CLN: Lint for usage of Deprecation/FutureWarning

  #62178 merged Sep 3, 2025

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

  #62230 merged Sep 3, 2025

• BUG: fix memory leak in JSON datetime serialization

  #62217 merged Sep 3, 2025

• ENH: support pathlib.Path division in StringArray (#62229)

  #62239 merged Sep 2, 2025

• REF: get rid of StringArrayNumpySemantics

  #62149 merged Sep 2, 2025

• ENH: support pathlib.Path division in StringArray

  #62229 merged Sep 2, 2025

• CI: Upgrade mypy to 1.17.1 and pyright to 1.1.404

  #62224 merged Sep 1, 2025

• BUG: Index.__getitem__ with 0d ndarray key

  #62216 merged Aug 29, 2025

• TYP: Typing fixes and improvements related to scipy.interpolate

  #62211 merged Aug 29, 2025

• CLN: remove maybe_infer_to_datetimelike

  #62209 merged Aug 28, 2025

• BUG: Fix Memory Leak in to_json

  #62210 merged Aug 28, 2025

• TST: Reduce banklist.html to make bs4 test run faster

  #62203 merged Aug 28, 2025

14 Pull requests opened by 13 people

• Preserve freq in TimedeltaIndex subtraction

  #62214 opened Aug 29, 2025

• BUG: Fix record_prefix ignored when record_path is empty (GH 62205)

  #62215 opened Aug 29, 2025

• TYP: Typing fixes and improvements related to ``scipy.sparse``

  #62218 opened Aug 29, 2025

• Remove custom footer template in favor of theme options (#51536)

  #62222 opened Aug 30, 2025

• DOC: Fix linkcode_resolve for inherited properties

  #62225 opened Aug 31, 2025

• fix : include datatype in memo key in sanitization function

  #62226 opened Aug 31, 2025

• BUG: rank with object dtype and small values #62036

  #62227 opened Aug 31, 2025

• Updated _infer_matches and _maybe_downcast_for_indexing

  #62232 opened Sep 2, 2025

• PERF: Move variables outside of the for loop to improve performance

  #62234 opened Sep 2, 2025

• Add Linux Foundation Health Score badge to README

  #62237 opened Sep 2, 2025

• TST: regression test for GH#56853 (insert/delete with MultiIndex datetime)

  #62238 opened Sep 2, 2025

• DEPS: Bump optional dependencies

  #62241 opened Sep 2, 2025

• PARTIAL FIX: Improve leading zeros preservation with dtype=str for dict-based dtypes

  #62242 opened Sep 2, 2025

• TST: add regression test for GH#54409 (tz-aware NaT indexing with loc)

  #62245 opened Sep 3, 2025

19 Issues closed by 5 people

• Converting None values with pandas.to_datetime is unpredictable

  #23055 closed Sep 3, 2025

• BUG: AssertionError when multiplying timedelta Series with a pandas nullable dtype Series

  #58054 closed Sep 3, 2025

• BUG/API: Series[bool] floordiv raises but divmod does not

  #46043 closed Sep 3, 2025

• Where are the docs for idiots like me?

  #62243 closed Sep 3, 2025

• BUG: divmod(pd.NA, s) returns single Series instead of tuple

  #62196 closed Sep 3, 2025

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

  #61940 closed Sep 2, 2025

• BUG:

  #62233 closed Sep 2, 2025

• ENH: High-performance implementation function for appending rows to a dataframe

  #62236 closed Sep 2, 2025

• ENH: keep the type option for keys in groupby

  #62206 closed Sep 1, 2025

• ENH: Add Support for Reading .conll Files in Pandas

  #62228 closed Sep 1, 2025

• BUG: Using unstacking with `sort=False` after grouping with `sort=False` incorrectly shuffles data

  #62213 closed Sep 1, 2025

• ENH: Allow dropna to accept floats [0, 1] as thresh values

  #40676 closed Aug 29, 2025

• Why does `infer_freq` raise an error for PeriodIndex?

  #6771 closed Aug 29, 2025

• BUG(?) `Index.__getitem__` with 0D numpy array raises AssertionError

  #55601 closed Aug 29, 2025

• REF: Replace maybe_infer_to_datimelike with maybe_convert_objects

  #60258 closed Aug 28, 2025

• BUG: memory leak in to_json when converting DateTime values

  #62204 closed Aug 28, 2025

• Practical steps towards a simplified BlockManager

  #34669 closed Aug 28, 2025

• Support pydata/sparse arrays in DataFrame

  #33182 closed Aug 28, 2025

• CLN/API: implemented to_html in terms of .style

  #11700 closed Aug 28, 2025

6 Issues opened by 5 people

• PERF: `DataFrame.unstack()` and `DataFrame.pivot_table()` upcasting take up more memory than needed

  #62244 opened Sep 3, 2025

• BUG: str.match and str.contains behave inconsistently on compiled regexps (regression in 2.3.2 relative to 2.3.1)

  #62240 opened Sep 2, 2025

• BUG: writing categorical of intervals (pd.cut() output) to Parquet is not supported

  #62235 opened Sep 2, 2025

• API: `freq` or `step` for base class Index?

  #62219 opened Aug 29, 2025

• ENH: Infer enums as categories

  #62207 opened Aug 28, 2025

• BUG: `record_prefix` ignored when `record_path` is empty

  #62205 opened Aug 28, 2025

54 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: Remove special-casing for date objects in DatetimeIndex indexing (GH#62158)

  #62198 commented on Sep 1, 2025 • 4 new comments

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

  #62055 commented on Sep 3, 2025 • 3 new comments

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

  #62080 commented on Aug 29, 2025 • 3 new comments

• DOC: documenting pandas.MultIndex.argsort

  #62005 commented on Sep 1, 2025 • 2 new comments

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

  #62189 commented on Sep 3, 2025 • 2 new comments

• BUG/API: comparison datetime64-vs-dates

  #62157 commented on Sep 3, 2025 • 0 new comments

• ENH: Downsampling pyarrow backed DatetimeIndex should potentially return date32 instead of timestamp

  #58308 commented on Sep 3, 2025 • 0 new comments

• BUG: remove_unused_levels does not keep index levels order

  #61245 commented on Sep 3, 2025 • 0 new comments

• API: indexing dates-with-datetime64

  #62158 commented on Sep 3, 2025 • 0 new comments

• user wants pd.to_numeric as DataFrame method

  #22212 commented on Sep 3, 2025 • 0 new comments

• TypeError: dtype '<class 'datetime.datetime'>' not understood

  #25730 commented on Sep 3, 2025 • 0 new comments

• ENH: support reading directory in read_csv

  #61275 commented on Aug 29, 2025 • 0 new comments

• ENH: Implement translations infrastructure

  #61380 commented on Aug 28, 2025 • 0 new comments

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

  #61457 commented on Sep 2, 2025 • 0 new comments

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

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

• adding pandas.api.typing.aliases and docs

  #61735 commented on Sep 3, 2025 • 0 new comments

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

  #61920 commented on Sep 1, 2025 • 0 new comments

• DOC: added button to edit on GitHub

  #61956 commented on Sep 4, 2025 • 0 new comments

• DOC: Clarify parameter rules in the Notes Section of date_range and timedelta_range

  #62194 commented on Aug 30, 2025 • 0 new comments

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

  #62009 commented on Aug 31, 2025 • 0 new comments

• Fix cbusday calendar Typecheck v2

  #62014 commented on Aug 31, 2025 • 0 new comments

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

  #62016 commented on Sep 1, 2025 • 0 new comments

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

  #62029 commented on Sep 3, 2025 • 0 new comments

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

  #62030 commented on Sep 3, 2025 • 0 new comments

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

  #62035 commented on Sep 4, 2025 • 0 new comments

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

  #62040 commented on Sep 2, 2025 • 0 new comments

• BUG: Preserve day freq on DatetimeIndex subtraction

  #62096 commented on Aug 28, 2025 • 0 new comments

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

  #14210 commented on Aug 28, 2025 • 0 new comments

• REF: `DataFrame.to_html` should call `Styler.to_html`

  #41693 commented on Aug 28, 2025 • 0 new comments

• BUG: rank with object dtype and small values

  #62036 commented on Aug 28, 2025 • 0 new comments

• BUG: `csv.QUOTE_NOTNULL` doesn't seem to be supported by `DataFrame.to_csv()`, but there's no error and it's not documented

  #60423 commented on Aug 28, 2025 • 0 new comments

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

  #61819 commented on Aug 28, 2025 • 0 new comments

• ENH: support apply method for ExtensionArray backed DataFrame

  #54584 commented on Aug 29, 2025 • 0 new comments

• ENH: Improve `OverflowError` message when `pandas.read_stata` fails to convert dates

  #36096 commented on Aug 29, 2025 • 0 new comments

• BUG: `Styler.to_excel` does not export styles and formats correctly

  #42276 commented on Aug 29, 2025 • 0 new comments

• Various methods don't call call __finalize__

  #28283 commented on Aug 30, 2025 • 0 new comments

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

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

• DOC: Incorrect Source Link

  #58350 commented on Aug 30, 2025 • 0 new comments

• ENH: Change ExtensionOpsMixin behaviour to not add new operator method if one is already defined on the ExtensionArray class

  #50767 commented on Aug 31, 2025 • 0 new comments

• BUG: Behavior change in pandas 3.x with `Series.resample` and `closed="right", how="right"`

  #62200 commented on Aug 31, 2025 • 0 new comments

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

  #62094 commented on Aug 31, 2025 • 0 new comments

• BUG: `pd.read_parquet()` loads missing string values as `None` instead of `NaN`

  #55721 commented on Aug 31, 2025 • 0 new comments

• ENH: Add Polars engine to read_csv

  #61813 commented on Sep 1, 2025 • 0 new comments

• BUG: Series.str.split broken with pyarrow strings and regex argument

  #58321 commented on Sep 2, 2025 • 0 new comments

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

  #40800 commented on Sep 2, 2025 • 0 new comments

• DEPR: rename 'unit' keyword in to_datetime etc

  #62097 commented on Sep 2, 2025 • 0 new comments

• BUG: `Index` accepts lists as values

  #61937 commented on Sep 2, 2025 • 0 new comments

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

  #32307 commented on Sep 2, 2025 • 0 new comments

• DataFrame.copy(), at least, should be threadsafe

  #2728 commented on Sep 2, 2025 • 0 new comments

• BUG: CustomBusinessDay not respecting calendar

  #60647 commented on Sep 2, 2025 • 0 new comments

• inplace kwarg must be of bool type, but other boolean kwargs don't have this restriction

  #16714 commented on Sep 3, 2025 • 0 new comments

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

  #61194 commented on Sep 3, 2025 • 0 new comments

• BUG: Insert then delete column into MultiIndex with timestamps leads to RecursionError

  #56853 commented on Sep 3, 2025 • 0 new comments

• BUG: loc fails with tz_aware DateTimeIndex

  #54409 commented on Sep 3, 2025 • 0 new comments