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Flexible and powerful data analysis / manipulation library for Python, providing labeled data structures similar to R data.frame objects, statistical functions, and much more
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Pandas v2.2.1

Pandas: v2.2.1 Release

Release date:
February 23, 2024
Previous version:
v2.2.0 (released January 20, 2024)
Magnitude:
2,380 Diff Delta
Contributors:
7 total committers
Data confidence:
Commits:
60 impacting commits

60 Commits in this Release

Ordered by the degree to which they evolved the repo in this version.

Backport PR #57102 on branch 2.2.x (ENH: Add skipna to groupby.first and groupby.last) (#57141)
Authored January 30, 2024
Backport PR #56945 on branch 2.2.x (ENH: raise ValueError if invalid period freq pass to asfreq when the index of df is a PeriodIndex) (#57292)
Authored February 7, 2024
Backport PR #57439 on branch 2.2.x (BUG: read_json returning Index instead of RangeIndex) (#57552)
Authored February 21, 2024
Backport PR #57233 on branch 2.2.x (REGR: Fix to_numpy conversion for arrow ea with float dtype given) (#57294)
Authored February 7, 2024
Backport PR #57402 on branch 2.2.x (BUG: wrong future Warning on string assignment in certain condition) (#57460)
Authored February 16, 2024
Backport PR #57101 on branch 2.2.x (REGR: Index.join raising TypeError when joining an empty index to a mixed type index) (#57133)
Authored January 29, 2024
Backport PR #57139 on branch 2.2.x (BUG: Index(Series) makes array read only for object dtype) (#57143)
Authored January 30, 2024
Backport PR #57265 on branch 2.2.x (COMPAT: Numpy 2.0 casting compat) (#57271)
Authored February 6, 2024
Backport PR #57379 on branch 2.2.x (Fix numpy-dev CI warnings) (#57383)
Authored February 12, 2024
Backport PR #57174 on branch 2.2.x (BUG: Interchange protocol implementation allows non-string column names) (#57203)
Authored February 2, 2024
Backport PR #57490 on branch 2.2.x (DOC: Add a few deprecation notes) (#57509)
Authored February 19, 2024
Backport PR #57322 on branch 2.2.x (REGR: Fix astype conversion of ea int to td/dt with missing values) (#57331)
Authored February 10, 2024
Backport PR #57388 on branch 2.2.x (BUG: map(na_action=ignore) not respected for Arrow & masked types) (#57413)
Authored February 14, 2024
Backport PR #57084 on branch 2.2.x (Fix mem leak in read_csv) (#57090)
Authored January 26, 2024
Backport PR #57169 on branch 2.2.x (REGR: DataFrame.sort_index not producing stable sort) (#57180)
Authored January 31, 2024
Backport PR #57329 on branch 2.2.x (REGR: CategoricalIndex.difference with null values) (#57336)
Authored February 10, 2024
Backport PR #57121 on branch 2.2.x (REGR: Fix to_numpy for masked array with non-numeric dtype) (#57325)
Authored February 9, 2024
Backport PR #57046 on branch 2.2.x (REGR: groupby.idxmin/idxmax wrong result on extreme values) (#57086)
Authored January 26, 2024
Backport PR #57058 on branch 2.2.x (BUG: Series.pct_change with empty Series) (#57059)
Authored January 25, 2024
Backport PR #57340 on branch 2.2.x (REGR: shift raising for axis=1 and empty df) (#57381)
Authored February 12, 2024
Backport PR #57018 on branch 2.2.x (REGR: merge_ordered with fill_method="ffill" and how="left") (#57021)
Authored January 23, 2024
Backport PR #57341 on branch 2.2.x (REGR: assert_series_equal defaulting to check_exact=True for Index) (#57380)
Authored February 12, 2024
Backport PR #57175 on branch 2.2.x (BUG: Interchange protocol implementation handles empty dataframes incorrectly) (#57179)
Authored January 31, 2024
Backport PR #57323 on branch 2.2.x (REGR: Fix regression when grouping over a Series) (#57339)
Authored February 10, 2024
Backport PR #57089 on branch 2.2.x (BUG: wide_to_long with string columns) (#57120)
Authored January 29, 2024
Backport PR #57250 on branch 2.2.x (REGR/DOC: pd.concat should special case DatetimeIndex to sort even when sort=False) (#57326)
Authored February 9, 2024
Backport PR #57163 on branch 2.2.x (CI: Add macOS M1 CI) (#57202)
Authored February 2, 2024
Backport PR #57314 on branch 2.2.x (BUG: Fix near-minimum timestamp handling) (#57573)
Authored February 23, 2024
Backport PR #57232 on branch 2.2.x (REGR: to_json converting nullable ints to floats) (#57240)
Authored February 4, 2024
Backport PR #57488 on branch 2.2.x (REGR: query raising for all NaT in object column) (#57515)
Authored February 20, 2024
Backport PR #57489 on branch 2.2.x (REGR: astype introducing decimals when casting from int with na to string) (#57533)
Authored February 20, 2024
Backport PR #57057 on branch 2.2.x (COMPAT: Make argsort compatable with numpy 2.0) (#57062)
Authored January 25, 2024
Backport PR #57034 on branch 2.2.x (REGR: perf regression in Series.combine_first) (#57072)
Authored January 25, 2024
Backport PR #57157 on branch 2.2.x (BUG: Fix to_dict with datelike types and orient=list) (#57160)
Authored January 31, 2024
Backport PR #57556 on branch 2.2.x (Remove PyArrow deprecation warning) (#57568)
Authored February 22, 2024
Backport PR #57078 on branch 2.2.x (54628 fix find stack level memory leak) (#57105)
Authored January 27, 2024
Backport PR #57122 on branch 2.2.x (CI: autouse add_doctest_imports) (#57135)
Authored January 29, 2024
Backport PR #57536 on branch 2.2.x (BUG: dt64 + DateOffset with milliseconds) (#57537)
Authored February 20, 2024
Backport PR #57311 on branch 2.2.x (Fixing multi method for to_sql for non-oracle databases) (#57466)
Authored February 17, 2024
Backport PR #57061 on branch 2.2.x (REGR: non-unique, masked dtype index raising IndexError) (#57142)
Authored January 30, 2024

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Top Contributors in v2.2.1

meeseeksmachine
MarcoGorelli
phofl
pandas-development-team-79e2
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Release Notes Published

We are pleased to announce the release of pandas 2.2.1. This release includes some new features, bug fixes, and performance improvements. We recommend that all users upgrade to this version.

See the full whatsnew for a list of all the changes. Pandas 2.2.1 supports Python 3.9 and higher.

The release will be available on the defaults and conda-forge channels:

conda install pandas

Or via PyPI:

python3 -m pip install --upgrade pandas

Please report any issues with the release on the pandas issue tracker.

Thanks to all the contributors who made this release possible.

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