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Fix issue #31708 Series.astype(str, skipna=True) vanished in the 1.0 release Bug Regression Functionality that used to work in a prior pandas version
#35060 by t0ma-sz was closed Jul 17, 2020 Loading… updated May 11, 2023
5 tasks
BUG: Copy categorical codes if empty (fixes #18051) Categorical Categorical Data Type Regression Functionality that used to work in a prior pandas version
#18279 by ghasemnaddaf was closed Nov 22, 2017 Loading… updated May 11, 2023
4 tasks done
BUG: boolean masking with Index objects Indexing Related to indexing on series/frames, not to indexes themselves Regression Functionality that used to work in a prior pandas version
#17219 by naor2013 was closed Oct 2, 2017 Loading… updated May 11, 2023
REGR: Fix regression RecursionError when replacing numeric scalar with None Regression Functionality that used to work in a prior pandas version replace replace method
tocsv_interval _categories Bug Categorical Categorical Data Type IO CSV read_csv, to_csv Regression Functionality that used to work in a prior pandas version
BUG: replace with value also being replaced Bug Regression Functionality that used to work in a prior pandas version replace replace method
REGR: loc.setitem losing index name when df was empty before Indexing Related to indexing on series/frames, not to indexes themselves Regression Functionality that used to work in a prior pandas version
REGR: check_flags not respected in assert_frame_equal Regression Functionality that used to work in a prior pandas version Testing pandas testing functions or related to the test suite
Fix Regression when using sum/cumsum on Groupby objects Groupby Regression Functionality that used to work in a prior pandas version Stale
#44526 by CloseChoice was closed Jan 25, 2022 Loading… updated Jan 25, 2022
2 of 4 tasks
Backport PR #44828 on branch 1.3.x (REGR: resampling DataFrame with DateTimeIndex with empty groups and uint8, uint16 or uint32 columns incorrectly raising RuntimeError) Datetime Datetime data dtype Regression Functionality that used to work in a prior pandas version Resample resample method
BUG: groupby agg fails silently with mixed dtypes Dtype Conversions Unexpected or buggy dtype conversions Groupby Regression Functionality that used to work in a prior pandas version
BUG: convert_dtypes incorrectly converts byte strings to strings in 1.3+ Dtype Conversions Unexpected or buggy dtype conversions Regression Functionality that used to work in a prior pandas version Strings String extension data type and string data
BUG: isin fails to correctly compare None values. Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Bug Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Regression Functionality that used to work in a prior pandas version
#41145 by DriesSchaumont was closed Oct 4, 2021 • Draft updated Oct 4, 2021
2 of 4 tasks
BUG: DataFrame.explode is failing on scalar int value. Bug Regression Functionality that used to work in a prior pandas version Reshaping Concat, Merge/Join, Stack/Unstack, Explode
BUG: Series.groupby fails with InvalidIndexError on time series with … Bug Groupby Indexing Related to indexing on series/frames, not to indexes themselves Regression Functionality that used to work in a prior pandas version
BUG: fix regression with SerieGrouper with Timestamp index (#42390) Datetime Datetime data dtype Groupby Regression Functionality that used to work in a prior pandas version
Bug in melt raising Error with dup columns as value vars Regression Functionality that used to work in a prior pandas version Reshaping Concat, Merge/Join, Stack/Unstack, Explode
Backport PR #41789 on branch 1.2.x (Bug in xs raising KeyError for MultiIndex columns with droplevel False and list indexe) Indexing Related to indexing on series/frames, not to indexes themselves Regression Functionality that used to work in a prior pandas version
REGR: object column repr not respecting float format Output-Formatting __repr__ of pandas objects, to_string Regression Functionality that used to work in a prior pandas version
REGR: missing vals not replaceable in categorical Categorical Categorical Data Type Regression Functionality that used to work in a prior pandas version replace replace method
#40657 by mzeitlin11 was closed Mar 31, 2021 Loading… updated Mar 31, 2021
4 tasks done
BUG: float-like string, trailing 0 truncation Output-Formatting __repr__ of pandas objects, to_string Regression Functionality that used to work in a prior pandas version
REG: DataFrame.shift with axis=1 and CategoricalIndex columns Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Bug Categorical Categorical Data Type Regression Functionality that used to work in a prior pandas version
REGR: fix regression in groupby aggregation with out-of-bounds datetimes Groupby Regression Functionality that used to work in a prior pandas version
Maintain inplace operation on series Copy / view semantics Regression Functionality that used to work in a prior pandas version
Regression in offsets caused offsets to be no longer hashable Datetime Datetime data dtype Frequency DateOffsets Regression Functionality that used to work in a prior pandas version
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