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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 v1.2.0.dev0

Pandas: v1.2.0.dev0 Release

Release date:
December 7, 2020
Previous version:
v1.1.5 (released December 7, 2020)
Magnitude:
6,540 Diff Delta
Contributors:
8 total committers
Data confidence:
Commits:
173 impacting commits

173 Commits in this Release

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

Backport PR #37302 on branch 1.1.x (BUG: Allow empty chunksize in stata reader when using iterator) (#37364)
Authored October 24, 2020
Backport PR #35875 on branch 1.1.x (COMPAT: Ensure rolling indexers return intp during take operations) (#37471)
Authored October 28, 2020
Backport PR #35712: PERF: RangeIndex.format performance (#35904)
Authored August 26, 2020
Backport PR #35470: CI: unpin isort 5 (#35134) (#35501)
Authored August 1, 2020
Backport PR #35519: REF: StringArray._from_sequence, use less memory (#35770)
Authored August 17, 2020
Backport PR #35440: BUG: CategoricalIndex.format (#35539)
Authored August 4, 2020
Backport PR #35852: API: replace dropna=False option with na_sentinel=None in factorize (#36071)
Authored September 2, 2020
Backport PR #35792 on branch 1.1.x: CLN/BUG: Clean/Simplify _wrap_applied_output (#37416)
Authored October 26, 2020
Backport PR #36303: REGR: Fix IntegerArray unary ops regression (#36333)
Authored September 13, 2020
Backport PR #36440: REGR: Series[numeric] comparison with str raising on numexpr path (#36473)
Authored September 19, 2020
Backport PR #35272: CI: Unpin pytest (#35469)
Authored July 30, 2020
Backport PR #35723: agg with list of non-aggregating functions (#35738)
Authored August 15, 2020
Backport PR #35938: REGR: Fix comparison broadcasting over array of Intervals (#36039)
Authored September 1, 2020
Backport PR #36595: Partial Revert "ENH: infer freq in timedelta_range (#32377)" (#36659)
Authored September 26, 2020
Backport PR #35914: Make MultiIndex.get_loc raise for unhashable type (#36163)
Authored September 6, 2020
Backport PR #36249: BUG: na parameter for str.startswith and str.endswith not propagating for Series with categorical dtype (#36331)
Authored September 13, 2020
Backport PR #36147: REGR: Series access with Index of tuples/frozenset (#36332)
Authored September 13, 2020
Backport PR #35697: REGR: Don't ignore compiled patterns in replace (#35765)
Authored August 17, 2020
Backport PR #35750: Pass check_dtype to assert_extension_array_equal (#35773)
Authored August 17, 2020
Backport PR #35647: BUG: Support custom BaseIndexers in groupby.rolling (#35699)
Authored August 13, 2020
Backport PR #38172: CI: update tests for numpy 1.20 change to floordiv (#38191)
Authored November 30, 2020
REGR: revert behaviour of getitem with assigning with a Series (#37502) (#37514)
Authored October 30, 2020
BUG: Fix astype from float32 to string (#36464) (#36519)
Authored September 21, 2020
Backport PR #35473: REGR: Fix conversion of mixed dtype DataFrame to numpy str (#35617)
Authored August 8, 2020
Backport PR #35639: BUG: RollingGroupby with closed and column selection no longer raises ValueError (#35651)
Authored August 10, 2020
Backport PR #35590: BUG: validate index/data length match in DataFrame construction (#35597)
Authored August 7, 2020
Backport PR #36051: BUG: frame._item_cache not cleared when Series is altered (#36072)
Authored September 2, 2020
Backport PR #35578: BUG: df.shift(n, axis=1) with multiple blocks (#35601)
Authored August 7, 2020
Backport PR #38099: BUG: fix wrong error message in deprecated 2D indexing of Series with datetime values (#38210)
Authored December 1, 2020
Backport PR #37473: CI: 32 bit maybe_indices_to_slice (#37503)
Authored October 30, 2020
Backport PR #37499: REGR: fix isin for large series with nan and mixed object dtype (causing regression in read_csv) (#37517)
Authored October 30, 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 #35502: CI: xfail numpy-dev (#35537)
Authored August 4, 2020
Backport PR #36371: BUG: Fix MultiIndex column stacking with dupe names (#36396)
Authored September 19, 2020
Backport PR #36316: BUG: Don't overflow with large int scalar (#36334)
Authored September 13, 2020
Backport PR #36610: REGR: DataFrame.apply() with raw option and func returning string (#36631)
Authored September 25, 2020
Backport PR #36114: REGR: fix consolidation/cache issue with take operation (#36135)
Authored September 5, 2020
REGR: inplace Series op not actually operating inplace (#37508) (#37515)
Authored October 30, 2020
Backport PR #36552: REGR: Series.__mod__ behaves different with numexpr (#36750)
Authored October 1, 2020

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Top Contributors in v1.2.0.dev0

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

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