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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 v1.1.2

Pandas: v1.1.2 Release

Release date:
September 8, 2020
Previous version:
v1.1.1 (released August 20, 2020)
Magnitude:
1,335 Diff Delta
Contributors:
6 total committers
Data confidence:
Commits:
36 impacting commits

36 Commits in this Release

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

Backport PR #35712: PERF: RangeIndex.format performance (#35904)
Authored August 26, 2020
Backport PR #35852: API: replace dropna=False option with na_sentinel=None in factorize (#36071)
Authored September 2, 2020
Backport PR #35938: REGR: Fix comparison broadcasting over array of Intervals (#36039)
Authored September 1, 2020
Backport PR #35914: Make MultiIndex.get_loc raise for unhashable type (#36163)
Authored September 6, 2020
Backport PR #36051: BUG: frame._item_cache not cleared when Series is altered (#36072)
Authored September 2, 2020
Backport PR #36141: BUG: copying series into empty dataframe does not preserve dataframe index name (#36221)
Authored September 8, 2020
Backport PR #36054: BUG: Don't raise when constructing Series from ordered set (#36162)
Authored September 6, 2020
Backport PR #36114: REGR: fix consolidation/cache issue with take operation (#36135)
Authored September 5, 2020
BUG: DataFrame.apply with result_type=reduce incorrect index (#35905)
Authored August 26, 2020
Backport PR #35979: BUG: Respect errors="ignore" during extension astype (#36167)
Authored September 6, 2020
Backport PR #35877: REGR: DatetimeIndex.intersection incorrectly raising AssertionError (#35879)
Authored August 25, 2020
TST: Fix test_parquet failures for pyarrow 1.0 (#35814) (#35887)
Authored August 25, 2020
Backport PR #36152: Fix compressed multiindex for output of groupby.rolling (#36203)
Authored September 7, 2020
Backport PR #35882: BUG: item_cache invalidation in get_numeric_data (#36188)
Authored September 7, 2020
Backport PR #36118: REGR: ensure closed attribute of IntervalIndex is preserved in pickle roundtrip (#36119)
Authored September 4, 2020
Backport PR #36115: REGR: append tz-aware DataFrame with tz-naive values (#36166)
Authored September 6, 2020
Backport PR #35999: BUG: None in Float64Index raising TypeError, should return False (#36041)
Authored September 1, 2020
Backport PR #36208: BUG: GroupbyRolling with an empty frame (#36213)
Authored September 8, 2020
Backport PR #36050: BUG: incorrect year returned in isocalendar for certain dates (#36127)
Authored September 4, 2020
BUG: shows correct package name when import_optional_dependency is ca… (#36134) (#36199)
Authored September 7, 2020
Backport PR #36061: BUG: groupby and agg on read-only array gives ValueError: buffer source array is read-only (#36117)
Authored September 4, 2020
TST: skip test_groupby_rolling_index_changed on 32bit (#36220)
Authored September 8, 2020
Backport PR #36011: CI: suppress another setuptools warning (#36013)
Authored September 1, 2020
CI: pin setuptools on 1.1.x (#36048)
Authored September 1, 2020
Backport PR #35757: CI: Unpin Pytest + Pytest Asyncio Min Version (#35833)
Authored August 21, 2020
Backport PR #36191: TST: update test_series_factorize_na_sentinel_none for 32bit (#36200)
Authored September 7, 2020
Backport PR #35825: DOC: Start 1.1.2 (#35834)
Authored August 21, 2020
Backport PR #36182: DOC: release date for 1.1.2 (#36217)
Authored September 8, 2020
Backport PR #36205: DOC: doc fix (#36215)
Authored September 8, 2020
CLN: backport mpl warning fix to 1.1.2 (#36155)
Authored September 6, 2020
DOC: sync doc/source/whatsnew/v1.1.2.rst on 1.1.x (#36112)
Authored September 4, 2020
Backport PR #36086: DOC: minor fixes to whatsnew\v1.1.2.rst (#36095)
Authored September 3, 2020
Backport PR #35936: (REGR: Fix inplace updates on column to set correct values) (#36009)
Authored September 1, 2020
Backport PR #35794: BUG: issubclass check with dtype instead of type, closes GH#24883 (#35919)
Authored August 27, 2020
"Backport PR #35838 on branch 1.1.x" (#35915)
Authored August 27, 2020
RLS: 1.1.2
Authored September 8, 2020

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Top Contributors in v1.1.2

meeseeksmachine
simonjayhawkins
jorisvandenbossche
dsaxton
fangchenli
pandas-development-team-79e2

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Release Notes Published

This is a minor bug-fix release in the 1.1.x series and includes some regression fixes and bug fixes. We recommend that all users upgrade to this version.

See the full whatsnew for a list of all the changes.

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.

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