5 Pull requests merged by 5 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

9 Pull requests opened by 9 people

• 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

• 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

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

  #61216 opened Apr 2, 2025

13 Issues closed by 6 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

11 Issues opened by 11 people

• BUG: unstack incorrectly reshuffles data when sort=False

  #61217 opened Apr 2, 2025

• 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

41 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.

• Fix binary operations on attrs for Series and DataFrame

  #59636 commented on Apr 2, 2025 • 14 new comments

• MNT: Bump dev pin on NumPy

  #60987 commented on Mar 31, 2025 • 9 new comments

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

  #61143 commented on Apr 1, 2025 • 5 new comments

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

  #61171 commented on Mar 31, 2025 • 2 new comments

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

  #61162 commented on Mar 29, 2025 • 2 new comments

• BUG: Added deprecation warning to Timestamp constructor

  #61149 commented on Mar 31, 2025 • 2 new comments

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

  #60985 commented on Mar 31, 2025 • 2 new comments

• Preserve Complex Data Types for to_csv

  #61157 commented on Mar 31, 2025 • 1 new comment

• Bug: Save original index and remap after function completes

  #61116 commented on Mar 26, 2025 • 1 new comment

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

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

• BUG: timedeltas.pyx.c varies between builds

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

• Improve the apply/map APIs

  #61128 commented on Apr 1, 2025 • 0 new comments

• ENH: Enable nsmallest/nlargest on object dtype

  #61166 commented on Apr 2, 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: Add fillna at the beginning of _where not to fill NA. #60729

  #60772 commented on Mar 29, 2025 • 0 new comments

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

  #60941 commented on Apr 2, 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

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

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

• BUG: Fix return type of loc/iloc

  #61054 commented on Apr 2, 2025 • 0 new comments

• BUG: Collision between equivalent frequencies 'QS-…

  #61142 commented on Mar 26, 2025 • 0 new comments

• update offsets.pyx to fix #60647

  #61181 commented on Mar 31, 2025 • 0 new comments

• ENH: Accept no fields for groupby by

  #61160 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

• BUG: args offset in Timestamp.__new__ causes bugs

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

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

  #61180 commented on Mar 26, 2025 • 0 new comments

• BUG: Datatypes not preserved on pd.read_excel

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

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

  #61093 commented on Mar 27, 2025 • 0 new comments

• ENH: re-implement DataFrame.lookup.

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

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

  #61113 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

• Move interchange protocol implementation into a separate project

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

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

  #61156 commented on Mar 28, 2025 • 0 new comments

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

  #61177 commented on Mar 28, 2025 • 0 new comments

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

  #61170 commented on Mar 28, 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

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

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

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

  #61126 commented on Mar 29, 2025 • 0 new comments

• BUG: Parquet roundtrip fails with numerical categorical dtype

  #60491 commented on Mar 29, 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: `iloc` with `Series` as indexer fails for `__getitem__` but works with `__setitem__`

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

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

  #61099 commented on Apr 1, 2025 • 0 new comments