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Pull requests: pandas-dev/pandas
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REGR: fix string contains/match methods with compiled regex with flags Regression Functionality that used to work in a prior pandas version Strings String extension data type and string data
BUG: round on object columns no longer raises a TypeError Bug Numeric Operations Arithmetic, Comparison, and Logical operations Regression Functionality that used to work in a prior pandas version
PERF: Restore old performances with .isin() on columns typed as np.ui… isin isin method Performance Memory or execution speed performance Regression Functionality that used to work in a prior pandas version
REGR: Interpolate with method=index Bug Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Regression Functionality that used to work in a prior pandas version
REGR: groupby.value_counts with all NA values Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Bug Groupby Regression Functionality that used to work in a prior pandas version
REGR: from_records not initializing subclasses properly Regression Functionality that used to work in a prior pandas version Stale
REGR: Performance of DataFrame.stack where columns are not a MultiIndex Performance Memory or execution speed performance Regression Functionality that used to work in a prior pandas version Reshaping Concat, Merge/Join, Stack/Unstack, Explode
REGR: ensure numpy fixed-size binary/string arrays are converted to object dtype for Index creation Dtype Conversions Unexpected or buggy dtype conversions Index Related to the Index class or subclasses Regression Functionality that used to work in a prior pandas version
Backport PR #57314 on branch 2.2.x (BUG: Fix near-minimum timestamp handling) Regression Functionality that used to work in a prior pandas version Timestamp pd.Timestamp and associated methods
Backport PR #57474 on branch 2.2.x (REGR: DataFrame.transpose resulting in not contiguous data on nullable EAs) Bug Regression Functionality that used to work in a prior pandas version Reshaping Concat, Merge/Join, Stack/Unstack, Explode
REGR: DataFrame.update emits spurious warning about downcasting Bug Conditionals E.g. where, mask, case_when DataFrame DataFrame data structure Dtype Conversions Unexpected or buggy dtype conversions Regression Functionality that used to work in a prior pandas version Warnings Warnings that appear or should be added to pandas
REGR: Index.map adding back tz to tz-agnostic result Apply Apply, Aggregate, Transform, Map Index Related to the Index class or subclasses Regression Functionality that used to work in a prior pandas version
REGR: DataFrame.transpose resulting in not contiguous data on nullable EAs Bug Regression Functionality that used to work in a prior pandas version Reshaping Concat, Merge/Join, Stack/Unstack, Explode
Backport PR #57311 on branch 2.2.x (Fixing multi method for to_sql for non-oracle databases) IO SQL to_sql, read_sql, read_sql_query Regression Functionality that used to work in a prior pandas version
Backport PR #57341 on branch 2.2.x (REGR: assert_series_equal defaulting to check_exact=True for Index) Regression Functionality that used to work in a prior pandas version Testing pandas testing functions or related to the test suite
REGR: assert_series_equal defaulting to check_exact=True for Index Regression Functionality that used to work in a prior pandas version Testing pandas testing functions or related to the test suite
Backport PR #57323 on branch 2.2.x (REGR: Fix regression when grouping over a Series) Copy / view semantics Regression Functionality that used to work in a prior pandas version
Backport PR #57333 on branch 2.2.x (REGR: merge with 3rd party EA's can sometimes raise ValueError) Regression Functionality that used to work in a prior pandas version Reshaping Concat, Merge/Join, Stack/Unstack, Explode
Backport PR #57329 on branch 2.2.x (REGR: CategoricalIndex.difference with null values) Categorical Categorical Data Type Regression Functionality that used to work in a prior pandas version setops union, intersection, difference, symmetric_difference
REGR: merge with 3rd party EA's can sometimes raise ValueError Regression Functionality that used to work in a prior pandas version Reshaping Concat, Merge/Join, Stack/Unstack, Explode
REGR: CategoricalIndex.difference with null values Categorical Categorical Data Type Regression Functionality that used to work in a prior pandas version setops union, intersection, difference, symmetric_difference
Backport PR #57250 on branch 2.2.x (REGR/DOC: pd.concat should special case DatetimeIndex to sort even when sort=False) Docs Regression Functionality that used to work in a prior pandas version Reshaping Concat, Merge/Join, Stack/Unstack, Explode
REGR: Fix regression when grouping over a Series Copy / view semantics Regression Functionality that used to work in a prior pandas version
BUG: Fix near-minimum timestamp handling Regression Functionality that used to work in a prior pandas version Timestamp pd.Timestamp and associated methods
Fixing multi method for to_sql for non-oracle databases IO SQL to_sql, read_sql, read_sql_query Regression Functionality that used to work in a prior pandas version
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