32 Pull requests merged by 19 people

• TST (string dtype): clean-up xpasssing tests with future string dtype

  #59323 merged Jul 27, 2024

• BUG: Missing value code not recognised for Stata format version 105 a…

  #59325 merged Jul 26, 2024

• REF (string dtype): rename using_pyarrow_string_dtype to using_string_dtype

  #59320 merged Jul 26, 2024

• DOC: Fix link to Conda package in README.md

  #59321 merged Jul 26, 2024

• DOC: warn about when to not use the interchange protocol

  #59322 merged Jul 26, 2024

• DOC: Add RT03,SA01 for pandas.api.types.union_categoricals

  #59319 merged Jul 26, 2024

• TST / string dtype: add env variable to enable future_string and add test build

  #58459 merged Jul 26, 2024

• BUG: Integer values at the top end of the supported range incorrectly…

  #59310 merged Jul 25, 2024

• DOC: Clarify row delete comparison to SQL

  #59311 merged Jul 25, 2024

• Backport PR #59306 on branch 2.2.x (CI: xfail test_to_read_gcs for pyarrow=17)

  #59308 merged Jul 25, 2024

• CI: xfail test_to_read_gcs for pyarrow=17

  #59306 merged Jul 24, 2024

• CLN: Remove unnecessary iterators

  #59297 merged Jul 24, 2024

• DOC: add note to docstring about dtype keyword when creating Series from abother Series

  #59300 merged Jul 24, 2024

• DOC: Add SA01 for pandas.api.types.is_string_dtype

  #59305 merged Jul 24, 2024

• TST: Clean tests that constuct Index equivalent to RangeIndexes

  #57441 merged Jul 24, 2024

• DOC: Add Bodo to out-of-core projects in ecosystem

  #59302 merged Jul 24, 2024

• DOC: pyarrow.rst: Add missing IO readers

  #59304 merged Jul 24, 2024

• PDEP-14: Dedicated string data type for pandas 3.0

  #58551 merged Jul 24, 2024

• CLN: Remove Index.sort

  #59283 merged Jul 23, 2024

• DEPR: group by one element list gets scalar keys

  #59179 merged Jul 23, 2024

• Add fixture docstring for series indexing

  #59292 merged Jul 23, 2024

• ENH: Add support for reading 102-format Stata dta files

  #58978 merged Jul 23, 2024

• BUG: Hash and compare tuple subclasses as builtin tuples

  #59286 merged Jul 22, 2024

• Upload 3.13 & free-threaded nightly wheels

  #59136 merged Jul 22, 2024

• DOC: Using np.histogram_bin_edges with pd.cut

  #59281 merged Jul 22, 2024

• PERF: Don't create a CategoricalIndex._engine in __contains__ if categories are RangeIndex

  #59178 merged Jul 22, 2024

• CLN: Remove __nonzero__ in favor of __bool__

  #59275 merged Jul 22, 2024

• DOCS: Add docstrings to fixtures in /io/json/test_json_table_schema_ext_dtype.py

  #59287 merged Jul 22, 2024

• DOCS: Add docstrings to fixtures in /indexes/interval/test_constructors.py

  #59288 merged Jul 22, 2024

• DOCS: Add docstrings to fixture in /indexes/categorical/test_category.py

  #59289 merged Jul 22, 2024

• DOCS: Add docstrings to fixture in /indexing/interval/test_interval_new.py

  #59290 merged Jul 22, 2024

• DOC: Fix sentence fragment in string methods

  #59291 merged Jul 22, 2024

15 Pull requests opened by 13 people

• BUG: Avoid RangeIndex conversion in read_csv if dtype is specified

  #59316 opened Jul 26, 2024

• BUG: regression in master for DataFrame.sparse.from_spmatrix #59212

  #59317 opened Jul 26, 2024

• DOC: Typo in docs for na_values parameter in pandas.read_csv function #59314

  #59318 opened Jul 26, 2024

• Add doc for counting categorical dtype

  #59327 opened Jul 26, 2024

• TST (string dtype): xfail all currently failing tests with future.infer_string

  #59329 opened Jul 26, 2024

• String dtype: rename the storage options and add `na_value` keyword in `StringDtype()`

  #59330 opened Jul 26, 2024

• DOC: Added extra sentences to clarify series.GroupBy snippets in examples

  #59331 opened Jul 26, 2024

• BUG: Fix 57735

  #59335 opened Jul 27, 2024

• BUG: Fix for _validate_setitem_value fails to raise for PandasArray

  #59336 opened Jul 27, 2024

• ENH: Allow to plot weighted KDEs.

  #59337 opened Jul 27, 2024

• TST: Add test for `numpy.maximum` with `Timestamp` and `Series` of `datetime64`

  #59338 opened Jul 28, 2024

• Doc: Fix docstring SA01 error for pandas.core.groupby median and pandas.core.resample median

  #59339 opened Jul 28, 2024

• BUG: Added test for setitem using loc not aligning on index

  #59340 opened Jul 28, 2024

• DOC: add SA01 for pandas.Timestamp.isoweekday

  #59341 opened Jul 29, 2024

• TST: check visibility of x label and xtick labels for plot.hexbin

  #59343 opened Jul 29, 2024

21 Issues closed by 6 people

• BUG: pd.Series.duplicated(keep='first'|'last') returns multiple duplicates

  #59333 closed Jul 26, 2024

• BUG: Pandas does not recognise older missing value code for double when reading Stata files prior to 108 (Stata 6) format

  #58149 closed Jul 26, 2024

• STYLE Reduce merge conflicts with `force_single_line` or `force_grid_wrap=1`

  #50274 closed Jul 26, 2024

• DEV add back boto3 and botocore to requirements-dev.txt

  #50300 closed Jul 26, 2024

• CI can't install nightly-numpy on macos

  #50699 closed Jul 26, 2024

• DEV: CLI concept for Pandas

  #47700 closed Jul 26, 2024

• BUILD: Pandas never succeeds, the most time consuming part of using pandas

  #59315 closed Jul 26, 2024

• DOC: Remove Series.view(dtype=None) always trying float64

  #20281 closed Jul 26, 2024

• BUG: Integers with extreme values are incorrectly interpreted as missing when importing older versions (pre-version 8) of the Stata dta file format

  #58130 closed Jul 25, 2024

• BUG: to_datetime timestamp parsing in 2.x

  #58120 closed Jul 25, 2024

• BUG: Error on to_datetime() after running multiple times in jupyter notebook

  #59277 closed Jul 25, 2024

• database is locked

  #59149 closed Jul 25, 2024

• DOC: Add Bodo to out-of-core projects in ecosystem

  #59301 closed Jul 24, 2024

• BUG: Inconsistent types for groupby group names

  #58858 closed Jul 23, 2024

• Document our pytest fixtures

  #19159 closed Jul 23, 2024

• BUG: NamedTuples do no match tuples in pandas.Index

  #57922 closed Jul 22, 2024

• DOC: New contributor meeting, clarify or remove

  #59267 closed Jul 22, 2024

• VOTE: Voting issue for PDEP-14: Dedicated string data type for pandas 3.0

  #59160 closed Jul 22, 2024

• ENH: In pd.cut(), allow bins='auto' (leveraging `np.histogram_bin_edges`)

  #59165 closed Jul 22, 2024

• DOC: sentence fragment in "String methods"

  #59231 closed Jul 22, 2024

• Surprising behavior: set_index cannot set a MultiIndex from a tuple, only a list

  #59294 closed Jul 22, 2024

13 Issues opened by 13 people

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

  #59342 opened Jul 29, 2024

• DOC: Website opens search when I press Caps Lock

  #59334 opened Jul 26, 2024

• BUG: pandas.read_parquet () dtype_backend argument does not get the default value as documented

  #59332 opened Jul 26, 2024

• String dtype: overview of breaking behaviour changes

  #59328 opened Jul 26, 2024

• ENH: extent Styler `to_latex` for index name styling

  #59324 opened Jul 26, 2024

• DOC: Typo in docs for na_values parameter in pandas.read_csv function

  #59314 opened Jul 25, 2024

• BUG: df.to_json causes low precision in floats

  #59313 opened Jul 25, 2024

• PERF: Significant Performance Difference in DataFrame.to_csv() with and without Index Reset

  #59312 opened Jul 25, 2024

• pandas.Series.groupby example is not relevant

  #59309 opened Jul 25, 2024

• BUG: GroupBy.value_counts doesn't preserve original order for non-grouping rows

  #59307 opened Jul 24, 2024

• QST: Is this expected behavior when pd.read_csv() with na_values arguments?

  #59303 opened Jul 24, 2024

• BUG: Error message in read_csv misleading when using decimal=","

  #59299 opened Jul 23, 2024

• BUG: pandas.to_datetime reports incorrect index when failing.

  #59298 opened Jul 22, 2024

58 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.

• String dtype: implement object-dtype based StringArray variant with NumPy semantics

  #58451 commented on Jul 27, 2024 • 4 new comments

• ENH: DataFrame.plot.scatter argument `c` now accepts a column of strings, where rows with the same string are colored identically

  #59239 commented on Jul 26, 2024 • 3 new comments

• BUG: Fix `is_unique` regression for slices of `Index`es

  #57958 commented on Jul 22, 2024 • 2 new comments

• BUG: Fix difference functionality for Period Indexes

  #59148 commented on Jul 29, 2024 • 2 new comments

• Feature request: first & last for rolling()

  #33155 commented on Jul 29, 2024 • 0 new comments

• BUG: Couldn't run sql: 'Connection' object has no attribute 'cursor'

  #59293 commented on Jul 29, 2024 • 0 new comments

• BUG: ./ci/code_checks.sh fails in local dev environment

  #58612 commented on Jul 29, 2024 • 0 new comments

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

  #54466 commented on Jul 28, 2024 • 0 new comments

• DOC: Sort the pandas API reference navbar in alphabetical order

  #59164 commented on Jul 28, 2024 • 0 new comments

• DEPR: `keep_default_dates` and `convert_dates` in `read_json`

  #59161 commented on Jul 27, 2024 • 0 new comments

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

  #54792 commented on Jul 27, 2024 • 0 new comments

• BUG: ValueError with loc[] = (Regression 2.1.0)

  #57735 commented on Jul 27, 2024 • 0 new comments

• ENH: Allow to plot weighted KDEs.

  #59087 commented on Jul 26, 2024 • 0 new comments

• ENH: pd.concat with keys and ignore_index=True should raise

  #59274 commented on Jul 26, 2024 • 0 new comments

• BUG: to-markdown with NA

  #50866 commented on Jul 26, 2024 • 0 new comments

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

  #34681 commented on Jul 26, 2024 • 0 new comments

• BUG: pd.DataFrame.set_index() detects "label" input instead of "iterator" when keys argument is a list

  #58631 commented on Jul 26, 2024 • 0 new comments

• BUG: Series.mul silently returns wrong values with `UInt8` dtype when overflowing the max value range

  #59261 commented on Jul 29, 2024 • 0 new comments

• BUG: identity checking NA in map incorrect

  #58392 commented on Jul 28, 2024 • 0 new comments

• BUG: Assignment of pyarrow arrays yield unexpected dtypes

  #58601 commented on Jul 28, 2024 • 0 new comments

• PDEP-15: Change status of PDEP-10 to rejected

  #58623 commented on Jul 28, 2024 • 0 new comments

• Support writing/reading notes to/from excel files

  #58831 commented on Jul 26, 2024 • 0 new comments

• DEPS: Make pytz an optional dependency

  #59089 commented on Jul 26, 2024 • 0 new comments

• TST: Added script to enforce usage of match argument for tm.assert_produces_warning

  #59173 commented on Jul 26, 2024 • 0 new comments

• DOC: add SA01 for pandas.api.types.is_extension_array_dtype

  #59215 commented on Jul 25, 2024 • 0 new comments

• DOC: add SA01 for pandas.api.types.is_int64_dtype

  #59216 commented on Jul 25, 2024 • 0 new comments

• BUG: Fix read_csv index dtype override

  #59219 commented on Jul 29, 2024 • 0 new comments

• Fix https://github.com/pandas-dev/pandas/issues/20608

  #59284 commented on Jul 23, 2024 • 0 new comments

• BUG: `query` on columns with characters like # in its name

  #59296 commented on Jul 28, 2024 • 0 new comments

• fillna(inplace=True) does not work with columns selected by loc

  #32203 commented on Jul 22, 2024 • 0 new comments

• BUG: Using DateOffset with shift on a daylight savings transition produces error

  #57837 commented on Jul 22, 2024 • 0 new comments

• ENH: New Name for "numpy_nullable" dtype_backend

  #59032 commented on Jul 22, 2024 • 0 new comments

• pd.read_csv automatically casts strings into int/float

  #31821 commented on Jul 23, 2024 • 0 new comments

• BUG: list output incorrectly reused when calling DataFrame.apply

  #54250 commented on Jul 23, 2024 • 0 new comments

• ENH: Reduce type requirements for the subset parameter in drop_duplicates/duplicated

  #59237 commented on Jul 23, 2024 • 0 new comments

• DEPR: List of deprecations to be removed in 4.0

  #56596 commented on Jul 23, 2024 • 0 new comments

• API: distinguish NA vs NaN in floating dtypes

  #32265 commented on Jul 23, 2024 • 0 new comments

• BUG: regression in master for DataFrame.sparse.from_spmatrix

  #59212 commented on Jul 23, 2024 • 0 new comments

• BUG: DataFrame.xs multi-index drop_level=False has no effect when level= is left at default

  #59098 commented on Jul 24, 2024 • 0 new comments

• BUG: Pandas Overrides Default NumPy Function's Behavior

  #58520 commented on Jul 24, 2024 • 0 new comments

• BUG: reset_index() looses the frequency of a DatetimeIndex

  #59273 commented on Jul 24, 2024 • 0 new comments

• ENH: Python 3.13 free-threading support

  #59057 commented on Jul 24, 2024 • 0 new comments

• BUG: _validate_setitem_value fails to raise for PandasArray

  #51044 commented on Jul 24, 2024 • 0 new comments

• MultiIndex.from_product() casts float to int when corresponding int is also present

  #19432 commented on Jul 24, 2024 • 0 new comments

• BUG: pd.read_csv error when parse_dates used on index_col for dtype_backend="pyarrow"

  #57930 commented on Jul 24, 2024 • 0 new comments

• DOC: Enforce Numpy Docstring Validation | pandas.api.types

  #58577 commented on Jul 24, 2024 • 0 new comments

• DataFrameGroupBy.agg with nan results into inf

  #59106 commented on Jul 24, 2024 • 0 new comments

• BUG: rolling window with `center=True, min_periods=1` is not symmetric at edges

  #59252 commented on Jul 25, 2024 • 0 new comments

• BUG: index_col in read_csv ignores dtype argument

  #59077 commented on Jul 25, 2024 • 0 new comments

• BUG: Wrong timestamp resolution when parsing timestamp string with comma separated milliseconds

  #59256 commented on Jul 25, 2024 • 0 new comments

• BUG (?): dtype.value_counts() shows categorical multiple times

  #40735 commented on Jul 25, 2024 • 0 new comments

• BUG: numpy.maximum(pandas.Timestamp(...), pandas.Series(..., dtype='datetime64')) fails with TypeError

  #50864 commented on Jul 25, 2024 • 0 new comments

• PERF: Difference in using zipped pickle files

  #59279 commented on Jul 25, 2024 • 0 new comments

• DOC: Inconsistent and incomplete documentation of `pandas.eval`

  #58338 commented on Jul 25, 2024 • 0 new comments

• BUG: CoW does not seem to work on an index with duplicated labels

  #59272 commented on Jul 25, 2024 • 0 new comments

• BUG: .max() raises exception on Series with object dtype and mixture of Timestamp and NaT: TypeError: '>=' not supported between instances of 'Timestamp' and 'float'

  #58707 commented on Jul 26, 2024 • 0 new comments

• BUG: dtype keyword in Series constructor ignored for Series input in certain cases

  #59060 commented on Jul 26, 2024 • 0 new comments

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

  #55721 commented on Jul 26, 2024 • 0 new comments