7 Pull requests merged by 6 people

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

  #61697 merged Jun 25, 2025

• DOC: update Slack invite link in community dos

  #61704 merged Jun 25, 2025

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

  #61653 merged Jun 24, 2025

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

  #61699 merged Jun 24, 2025

• BUG: DataFrame.explode fails with str dtype

  #61623 merged Jun 24, 2025

• fix for building docs on Windows

  #61686 merged Jun 22, 2025

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

  #61680 merged Jun 20, 2025

9 Pull requests opened by 6 people

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

  #61682 opened Jun 20, 2025

• Raise MergeError on mismatched signed/unsigned int merge keys

  #61694 opened Jun 23, 2025

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

  #61698 opened Jun 24, 2025

• TST: Refactor S3 tests

  #61703 opened Jun 24, 2025

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

  #61705 opened Jun 25, 2025

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

  #61706 opened Jun 25, 2025

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

  #61708 opened Jun 25, 2025

• ENH: Enabled prefix, suffix, and sep to DataFrame.shift

  #61710 opened Jun 26, 2025

• POC: PDEP16 default to masked nullable dtypes

  #61716 opened Jun 26, 2025

6 Issues closed by 3 people

• BUG/API: floordiv by zero in Int64Dtype

  #61715 closed Jun 27, 2025

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

  #61690 closed Jun 25, 2025

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

  #58243 closed Jun 23, 2025

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

  #60149 closed Jun 22, 2025

• DOC: Pandas contributor take limit

  #61626 closed Jun 22, 2025

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

  #61469 closed Jun 21, 2025

13 Issues opened by 12 people

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

  #61714 opened Jun 26, 2025

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

  #61713 opened Jun 26, 2025

• BUG: .round causes TypeError / NaN-

  #61712 opened Jun 26, 2025

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

  #61711 opened Jun 26, 2025

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

  #61709 opened Jun 26, 2025

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

  #61707 opened Jun 25, 2025

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

  #61700 opened Jun 24, 2025

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

  #61696 opened Jun 23, 2025

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

  #61692 opened Jun 23, 2025

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

  #61691 opened Jun 23, 2025

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

  #61688 opened Jun 22, 2025

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

  #61687 opened Jun 22, 2025

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

  #61681 opened Jun 20, 2025

73 Unresolved conversations

Sometimes conversations happen on old items that aren’t yet closed. Here is a list of all the Issues and Pull Requests with unresolved conversations.

• Implemented NumbaExecutionEngine

  #61487 commented on Jun 26, 2025 • 21 new comments

• BUG: Fix Index.equals between object and string

  #61541 commented on Jun 26, 2025 • 6 new comments

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

  #61674 commented on Jun 23, 2025 • 5 new comments

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

  #61582 commented on Jun 25, 2025 • 3 new comments

• ENH: Implement PDEP-17

  #61468 commented on Jun 26, 2025 • 2 new comments

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

  #61624 commented on Jun 23, 2025 • 2 new comments

• Fix/devcontainer qt deps

  #61611 commented on Jun 25, 2025 • 2 new comments

• BUG: Fix implicit conversion to float64 with isin()

  #61679 commented on Jun 26, 2025 • 1 new comment

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

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

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

  #61396 commented on Jun 20, 2025 • 1 new comment

• ENH pandas-dev#60693: shift operations for Series and DataFrames

  #61540 commented on Jun 25, 2025 • 0 new comments

• ENH: Support Plugin Accessors Via Entry Points

  #61499 commented on Jun 21, 2025 • 0 new comments

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

  #61498 commented on Jun 25, 2025 • 0 new comments

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

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

• DOC: Improve DateOffset docstring with constructor and examples (#52431)

  #61476 commented on Jun 23, 2025 • 0 new comments

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

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

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

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

• BUG: Fix Dataframe handling of scalar Timestamp #61444

  #61450 commented on Jun 23, 2025 • 0 new comments

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

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

• [WIP] ENH: support reading directory in read_csv

  #61275 commented on Jun 25, 2025 • 0 new comments

• PDEP-15: Reject PDEP-10

  #58623 commented on Jun 23, 2025 • 0 new comments

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

  #61641 commented on Jun 27, 2025 • 0 new comments

• DOC: Fix docs for BusinessDay constructor #52431

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

• Parallelize test_sql.py - Issue #60378

  #61551 commented on Jun 25, 2025 • 0 new comments

• ENH: improve optional import error message

  #61597 commented on Jun 26, 2025 • 0 new comments

• PDEP-18: Nullable Object Dtype

  #61599 commented on Jun 26, 2025 • 0 new comments

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

  #61605 commented on Jun 25, 2025 • 0 new comments

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

  #61629 commented on Jun 25, 2025 • 0 new comments

• Description of pandas_datetime_exec function.

  #61635 commented on Jun 25, 2025 • 0 new comments

• Fix void dtype handling

  #61637 commented on Jun 25, 2025 • 0 new comments

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

  #61640 commented on Jun 25, 2025 • 0 new comments

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

  #61644 commented on Jun 26, 2025 • 0 new comments

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

  #61650 commented on Jun 26, 2025 • 0 new comments

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

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

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

  #61659 commented on Jun 25, 2025 • 0 new comments

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

  #61670 commented on Jun 25, 2025 • 0 new comments

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

  #61678 commented on Jun 25, 2025 • 0 new comments

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

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

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

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

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

  #61583 commented on Jun 23, 2025 • 0 new comments

• BUG: Writing UUIDs fail

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

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

  #61621 commented on Jun 23, 2025 • 0 new comments

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

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

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

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

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

  #61675 commented on Jun 23, 2025 • 0 new comments

• BUG: Implicit conversion to float64 with isin()

  #61676 commented on Jun 23, 2025 • 0 new comments

• Incorrect rolling std() results on very large DataFrames

  #61677 commented on Jun 23, 2025 • 0 new comments

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

  #61669 commented on Jun 23, 2025 • 0 new comments

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

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

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

  #61099 commented on Jun 22, 2025 • 0 new comments

• DOC: Fix docs for various offset constructors

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

• CI: Test pandas with numpy 1.26

  #61588 commented on Jun 21, 2025 • 0 new comments

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

  #61516 commented on Jun 21, 2025 • 0 new comments

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

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

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

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

• Moving to PyArrow dtypes by default

  #61618 commented on Jun 26, 2025 • 0 new comments

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

  #54466 commented on Jun 26, 2025 • 0 new comments

• ENH: ExcelWriter append or create mode

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

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

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

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

  #61596 commented on Jun 25, 2025 • 0 new comments

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

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

• ENH: Add `coalesce_keys` option to join

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

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

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

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

  #61662 commented on Jun 24, 2025 • 0 new comments

• BUG: replace value failed

  #61643 commented on Jun 24, 2025 • 0 new comments

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

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

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

  #61671 commented on Jun 24, 2025 • 0 new comments

• DOC: Description of pandas_datetime_exec function

  #61631 commented on Jun 23, 2025 • 0 new comments

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

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

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

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

• raise TypeError when function returns object-like results

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

• ENH: read_csv tz option

  #61535 commented on Jun 23, 2025 • 0 new comments

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

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